@article{GhimireFentonValeria2025,
author={Ghimire, S. and Fenton, N.J. and Valeria, O.},
journal={Le Couvert boréal},
title={Comment les feux de forêt et la récolte façonnent-ils les communautés végétales du sous-bois ?},
year={2025},
note={CEFRSC},
number={3},
pages={16},
volume={22},
url={https://afat.qc.ca/numeros/ete-2025/},
}
@mastersthesis{HoltSchmitt2024,
author={Holt-Schmitt, D.},
school={Université du Québec en Abitibi-Témiscamingue},
title={De l’effet lac aux bûches de bois : la distribution des bryophytes dans les forêts du lac supérieur},
year={2024},
note={CEFTMS, Fenton, N.J.},
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/},
}
@article{YinMartineauSamadEtAl2023,
author={Yin, X. and Martineau, C. and Samad, A. and Fenton, N.J.},
journal={Frontiers in Microbiology},
title={Out of site, out of mind: Changes in feather moss phyllosphere microbiota in mine offsite boreal landscapes},
year={2023},
note={Cited by: 5; All Open Access, Gold Open Access, Green Open Access},
volume={14},
type={Article},
doi={https://doi.org/10.3389/fmicb.2023.1148157},
}
@article{YinMartineauFenton2023,
author={Yin, X. and Martineau, C. and Fenton, N.J.},
journal={Global Ecology and Conservation},
title={How big is the footprint? Quantifying offsite effects of mines on boreal plant communities},
year={2023},
note={Cited by: 9; All Open Access, Gold Open Access},
volume={41},
type={Article},
doi={https://doi.org/10.1016/j.gecco.2023.e02372},
}
@article{CerrejonNoualhaguetFentonEtAl2025,
author={Cerrejon, C. and Noualhaguet, M. and Fenton, N.J. and Indorf, M. and Feldman, M.},
journal={Frontiers in Environmental Science},
title={Inconspicuous taxa incitizen science-based botanical research: actual contribution, limitations, and new opportunities for nonvascularcryptogams},
year={2025},
number={1448512},
volume={12},
}
@article{DupontPontonMaroisEtAl2025,
author={Dupont, J. and Ponton, D.E. and Marois, A. and Fenton, N.J. and Amyot, M. and Rosabal, M.},
journal={Frontiers in Environmental Chemistry},
title={Elemental atmospheric deposition around North America’s largest metal processor of electronic waste (Horne Smelter, Canada)},
year={2025},
note={Cited by: 1; All Open Access, Gold Open Access},
volume={6},
type={Article},
doi={https://doi.org/10.3389/fenvc.2025.1505053},
}
@article{BerrymanCleaverCoumansEtAl2025,
author={Berryman, E. and Cleaver, A. and Coumans, J. and Zagrtdenov, N. and Martineau, C. and Fenton, N.J. and Huntsman, P.},
journal={Applied Geochemistry},
title={Fugitive dust from exposed tailings at an inactive gold mine in Québec, Canada, using the Pas-DD dust capture method},
year={2025},
note={Cited by: 0; All Open Access, Hybrid Gold Open Access},
volume={189},
type={Article},
doi={https://doi.org/10.1016/j.apgeochem.2025.106449},
}
@article{HuppertsBerningerChenEtAl2025,
author={Hupperts, S.F. and Berninger, F. and Chen, H.Y.H. and Fenton, N.J. and Jean, M. and Koster, K. and Larjavaara, M. and Mack, M.C. and Nilsson, M.-C. and Palviainen, M. and Prokushkin, A. and Pumpanen, J. and Seedre, M. and Simard, M. and Gundale, M.J.},
journal={Global Change Biology},
title={A meta-regression of 18 wildfire chronosequences reveals key environmental drivers and knowledge gaps in the boreal nitrogen balance},
year={2025},
address={England},
month={Aug},
pages={e70398},
volume={31},
}
@article{DejoieLemayFentonEtAl2025,
author={Dejoie, E. and Lemay, M.-A. and Fenton, N.J. and DesRochers, A. and Marion, J. and Savard, M.M. and Porter, T.J. and Proulx, D. and Gennaretti, F.},
journal={Atmospheric Pollution Research},
title={Spatiotemporal assessment of lead (Pb) and cadmium (Cd) contamination in urban tree rings near an industrial smelter: high intraspecific variability but limited spatial differentiation.},
year={2025},
issn={1309-1042},
pages={102582},
doi={https://doi.org/10.1016/j.apr.2025.102582},
}
@article{LiuleviciusFenton2025,
author={Liulevicius, L. and Fenton, N.J.},
journal={Le Couvert boréal},
title={Résurrection dans l'Arctique.},
year={2025},
note={CEFRSC},
number={2},
pages={39},
volume={21},
url={https://afat.qc.ca/numeros/printemps-2025/},
}
@article{RandriamananjaraFentonDesRochers2025,
author={Randriamananjara, M.A. and Fenton, N.J. and DesRochers, A.},
journal={New Forests},
title={Understory vegetation diversity and composition in intensively managed plantations compared to extensively managed forests},
year={2025},
note={Cited by: 0; All Open Access, Hybrid Gold Open Access},
number={1},
volume={56},
type={Article},
doi={https://doi.org/10.1007/s11056-024-10071-9},
}
@phdthesis{Thomas2024,
author={Thomas, M.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Effet des perturbations d'origine anthropique sur deux espèces végétales d'importance culturelle.},
year={2024},
note={CEFTMS, Fenton, N.J. and Asselin, H. and Lamara, M.},
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/id/eprint/1631/},
}
@phdthesis{Niang2024,
author={Niang, F.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Explorer et prédire la biodiversité des forêts aménagées du domaine soudanien du Sénégal, Afrique de l'ouest.},
year={2024},
note={CEFTMS, Fenton, N.J. and Marchand, P.},
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/},
}
@article{RandriamananjaraFentonDesRochers2024,
author={Randriamananjara, M.A. and Fenton, N.J. and DesRochers, A.},
journal={New Forests},
title={Understory vegetation diversity and composition in intensively managed plantations compared to extensively managed forests},
year={2024},
issn={1573-5095},
number={1},
pages={5},
volume={56},
doi={https://doi.org/10.1007/s11056-024-10071-9},
}
@article{MartinFenton2023,
author={Martin, M. and Fenton, N.J.},
journal={The Conversation},
title={Un avenir très incertain pour les dernières vieilles forêts boréales},
year={2023},
note={CEFRSC},
url={https://theconversation.com/un-avenir-tres-incertain-pour-les-dernieres-vieilles-forets-boreales-196715},
}
@incollection{FentonHylanderPharoEtAl2024,
author={Fenton, N.J. and Hylander, K. and Pharo, E. and Zartman, C.E.},
editor={Peh, K.-H. and Corlett, R. and Bergeron, Y.},
title={Bryophytes in forest ecosystems},
booktitle={Routledge Handbook of Forest Ecology},
year={2024},
month={October},
pages={13},
chapter={16},
publisher={Routledge, Londre, UK.},
url={https://doi.org/10.4324/9781003324072},
}
@article{MacLeanBagloleBourgouinEtAl2024,
author={MacLean, D.A. and Baglole, T. and Bourgouin, M. and Chiasson, B. and Deb, J.C. and Erdozain, M. and James, R.J. and Negrazis, L. and Tousignant, L. and Wiebe, P. and Adams, G. and Bennett, J.R. and Emilson, E.J. and Fenton, N.J. and Forbes, G.J. and Gray, M.A. and Kidd, K.A. and McCartney, A. and Moreau, G. and Porter, K.B. and Valeria, O. and Venier, L.A.},
journal={Forestry Chronicle},
title={Predicting present and future habitats using LiDAR to integrate research and monitoring with landscape analyses},
year={2024},
number={2},
pages={194-207},
volume={100},
doi={https://doi.org/10.5558/tfc2024-024},
}
@MastersThesis{Carboni2024,
title = {Dynamique de la végétation de sous-bois en forêt boréale mixte, à l'ouest du Québec},
author = {Carboni, M.},
school = {Université du Québec en Abitibi-Témiscamingue},
year = {2024},
note = {CEFTMS, Fenton, N.J. and Bergeron, Y.},
url = {https://depositum.uqat.ca/id/eprint/1585/},
}
@mastersthesis{Soumah2024,
author={Soumah, K.},
school={Polytechnique Montréal},
title={Système d’information géographique comme outils d'analyse des impacts hors site des opérations minières sur les écosystèmes forestiers},
year={2024},
note={CEFTMS, Fenton, N.J. and Valeria, O.},
institution={Polytechnique Montréal},
}
@article{GrantFentonAsselin2024,
author={Grant, E. and Fenton, N.J. and Asselin, H.},
journal={Le Couvert boréal},
title={ Les milieux humides : un élément central de la relation entre les Autochtones et l’orignal},
year={2024},
note={CEFRSC},
number={3},
pages={10},
volume={20},
url={https://couvertboreal.com/publications/ete-2024/},
}
@article{BerrymanCleaverMartineauEtAl2024,
author={Berryman, E. and Cleaver, A. and Martineau, C. and Fenton, N.J. and Zagrtdenov, N. and Huntsman, P.},
journal={Applied Geochemistry},
title={Capture and characterization of fugitive mine dust around an open pit gold mine in Québec, Canada},
year={2024},
note={Cited by: 0},
volume={171},
type={Article},
doi={https://doi.org/10.1016/j.apgeochem.2024.106099},
}
@article{SlateAntoninkaBaileyEtAl2024,
author={Slate, M.L. and Antoninka, A. and Bailey, L. and Berdugo, M.B. and Callaghan, D.A. and Cardenas, M. and Chmielewski, M.W. and Fenton, N.J. and Holland-Moritz, H. and Hopkins, S. and Jean, M. and Kraichak, B.E. and Lindo, Z. and Merced, A. and Oke, T. and Stanton, D. and Stuart, J. and Tucker, D. and Coe, K.K.},
journal={New Phytologist},
title={Impact of changing climate on bryophyte contributions to terrestrial water, carbon, and nitrogen cycles},
year={2024},
note={Cited by: 1; All Open Access, Hybrid Gold Open Access},
number={6},
pages={2411 – 2429},
volume={242},
type={Review},
doi={https://doi.org/10.1111/nph.19772},
}
@article{NiangMarchandSambouEtAl2024,
author={Niang, F. and Marchand, P. and Sambou, B. and Fenton, N.J.},
journal={Forest Ecology and Management},
title={Exploring the effects of forest management on tree diversity, community composition, population structure and carbon stocks in sudanian domain of Senegal, West Africa},
year={2024},
issn={0378-1127},
pages={121821},
volume={559},
doi={https://doi.org/10.1016/j.foreco.2024.121821},
}
@article{NiangMarchandFentonEtAl2024,
author={Niang, F. and Marchand, P. and Fenton, N.J. and Sambou, B. and Bouchard, E.},
journal={Trees, Forests and People},
title={Forecasting forest management impacts on regeneration traits of high socio-economic value species in Senegal's Sudanian zone, West Africa},
year={2024},
issn={2666-7193},
pages={100602},
volume={16},
doi={https://doi.org/10.1016/j.tfp.2024.100602},
}
@article{FetouabFentonThiffaultEtAl2024,
author={Fetouab, A. and Fenton, N.J. and Thiffault, N. and Barrette, M.},
journal={Silva Fennica},
title={Planting density and mechanical site preparation effects on understory composition, functional diversity and planted black spruce growth in boreal forests},
year={2024},
number={2},
volume={58},
doi={https://doi.org/10.14214/sf.23029},
}
@article{RandriamananjaraFentonDesRochers2024,
author={Randriamananjara, M. and Fenton, N.J. and DesRochers, A.},
journal={Le Couvert boréal},
title={Plantations forestières : des déserts biologiques ?},
year={2024},
note={CEFRSC},
number={1},
pages={32},
volume={hiver},
url={https://couvertboreal.com/publications/hiver-2023/},
}
@article{NagatiGarantFentonEtAl2023,
author={Nagati, M. and Garant, A. and Fenton, N.J. and Thiffault, N. and Leduc, A.},
journal={Le Progrès forestier},
title={Le mélèze laricin : un potentiel allié pour la productivité des forêts tourbeuses},
year={2023},
note={CEFRSC},
pages={34-35},
volume={automne},
}
@article{RandriamananjaraFentonDesRochers2023,
author={Randriamananjara, M.A. and Fenton, N.J. and DesRochers, A.},
journal={Forest Ecology and Management},
title={How does understory vegetation diversity and composition differ between monocultures and mixed plantations of hybrid poplar and spruce?},
year={2023},
issn={0378-1127},
pages={121434},
volume={549},
doi={https://doi.org/10.1016/j.foreco.2023.121434},
}
@phdthesis{Indorf 2023 ,
author={Indorf, M.-F.},
school={ Université du Québec en Abitibi-Témiscamingue },
title={Étude des tourbières en Eeyou Istchee Baie-james : de l’assemblage des communautÉs végétales aux scénarios futurs sous l’effet des changements climatiques. },
year={ 2023 },
month={ August },
note={ CEFTMS, Fenton, N.J. and Bergeron, Y.},
institution={ Université du Québec en Abitibi-Témiscamingue },
url={ https://depositum.uqat.ca/ },
}
@phdthesis{Noualhaguet2023,
author={Noualhaguet, M.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Impacts de l’aménagement forestier écosystémique en forêt boréale mixte : structure, composition, régénération et biodiversité.},
year={2023},
month={August},
note={CEFTMS, Fenton, N.J. and Work, T.T.},
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/},
}
@mastersthesis{Boisvert2023,
author={Boisvert, R.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Patrons multi-échelles de composition et de richesse spécifique des communautés de lichens le long d’un gradient climatique en forêt boréale mixte.},
year={2023},
note={CEFTMS, Fenton, N.J. },
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/},
}
@article{RodriguezRodriguezFentonKembelEtAl2023,
author={Rodriguez-Rodriguez, J.C. and Fenton, N.J. and Kembel, S.W. and Mestre, E. and Jean, M. and Bergeron, Y.},
journal={Ecological Monographs},
title={Drivers of contrasting boreal understory vegetation in coniferous and broadleaf deciduous alternative states},
year={2023},
number={3},
pages={e1587},
volume={93},
doi={https://doi.org/10.1002/ecm.1587},
}
@article{rfkEtAl2023,
author = {Rodríguez-Rodríguez, J.-C. and Fenton, N.J. and Kembel, S.W. and Mestre, E. and Jean, M. and Bergeron, Y.},
title = {Factors Driving Changes in Plant Understory Communities Between Coniferous and Broadleaf Deciduous Boreal Forests},
journal = {The Bulletin of the Ecological Society of America},
year={2023},
pages = {e2103},
doi = {https://doi.org/10.1002/bes2.2103},
url = {https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/bes2.2103},
eprint = {https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/bes2.2103},
}
@phdthesis{Ambec2023,
author={Ambec, N.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Les effets relatifs des variables caractérisant les petits étangs, et des interactions avec les prédateurs, sur l’occupation et l’abondance des espèces de trois groupes de vertébrés dans le Nord-du-Québec.},
year={2023},
note={CEFTMS, Fenton, N.J. and Bergeron, Y.},
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/id/eprint/1511/},
}
@MastersThesis{Fetouab2023,
author={Fetouab, A.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Effet de la densité de plantation et de la préparation mécanique du sol sur la diversité et la compostion du sous-bois et la croissance des épinettes noires plantées dans la forêt boréale},
year={2023},
note={CEFTMS, Fenton, N.J. and Thiffault, N.},
institution={Université du Québec en Abitibi-Témiscamingue},
url={https://depositum.uqat.ca/},
}
@article{RodriguezRodriguezFentonBergeronEtAl2023,
author={Rodriguez-Rodriguez, J.C. and Fenton, N.J. and Bergeron, Y. and Kembel, S.W.},
journal={Plant and Soil},
title={Soil and tree phyllosphere microbial communities differ between coniferous and broadleaf deciduous boreal forests},
year={2023},
issn={1573-5036},
doi={https://doi.org/10.1007/s11104-023-05959-y},
}
@inbook{MartinShorohovaFenton2023,
author={Martin, M. and Shorohova, E. and Fenton, N.J.},
editor={Montoro Girona, M. and Morin, H. and Gauthier, S. and Bergeron, Y.},
title={Embracing the Complexity and the Richness of Boreal Old-Growth Forests: A Further Step Toward Their Ecosystem Management},
booktitle={Boreal Forests in the Face of Climate Change: Sustainable Management},
year={2023},
address={Cham},
pages={191--218},
publisher={Springer International Publishing},
isbn={978-3-031-15988-6},
doi={https://doi.org/10.1007/978-3-031-15988-6_7},
}
@inbook{LofrothBirkemoeShorohovaEtAl2023,
author={Lofroth, T. and Birkemoe, T. and Shorohova, E. and Dynesius, M. and Fenton, N.J. and Drapeau, P. and Tremblay, J.A.},
editor={Montoro Girona, M. and Morin, H. and Gauthier, S. and Bergeron, Y.},
title={Deadwood Biodiversity},
booktitle={Boreal Forests in the Face of Climate Change: Sustainable Management},
year={2023},
address={Cham},
pages={167--189},
publisher={Springer International Publishing},
isbn={978-3-031-15988-6},
doi={https://doi.org/10.1007/978-3-031-15988-6_6},
}
@inbook{HamalainenRunnelMikusinskiEtAl2023,
author={Hamalainen, A. and Runnel, K. and Mikusinski, G. and Himelbrant, D. and Fenton, N.J. and Lohmus, P.},
editor={Montoro Girona, M. and Morin, H. and Gauthier, S. and Bergeron, Y.},
title={Living Trees and Biodiversity},
booktitle={Boreal Forests in the Face of Climate Change: Sustainable Management},
year={2023},
address={Cham},
pages={145--166},
publisher={Springer International Publishing},
isbn={978-3-031-15988-6},
doi={https://doi.org/10.1007/978-3-031-15988-6_5},
}
@article{MeilleurGueneNanchenHugronEtAl2022,
author={Meilleur, S. and Guene-Nanchen, M. and Hugron, S. and Fenton, N.J. and Rochefort, L.},
journal={The Bryologist},
title={Towards the regeneration of brown mosses for fen restoration},
year={2022},
pages={23 - 35},
volume={125},
}
@article{YinMartineauDemersEtAl2021,
author={Yin, X. and Martineau, C. and Demers, I. and Basiliko, N. and Fenton, N.J.},
journal={Environmental Reviews},
title={The potential environmental risks associated with the development of rare earth element production in Canada},
year={2021},
pages={354-377},
volume={29},
doi={https://doi.org/10.1139/er-2020-0115},
}
@article{HernandezRodriguezMendozaFentonEtAl2021,
author={Hernandez-Rodriguez, E. and Mendoza, E. and Fenton, N.J. and Pena-Retes, P.},
journal={Cryptogamie, Bryologie},
title={Moss Diversity of a Pine-Oak Forest in Oaxaca, Mexico},
year={2021},
pages={221 -- 238},
volume={42},
publisher={Muséum national d'Histoire naturelle, Paris},
doi={https://doi.org/10.5252/cryptogamie-bryologie2021v42a17},
}
@PhdThesis{Yin2022,
author={Yin, X.},
school={Université du Québec en Abitibi-Témiscamingue},
title={Déterminer les effets hors site des mines et leur empreinte en utilisant la végétation et la phyllosphère : intégration du type d'écosystème et du cycle de vie des mines. },
year={2022},
institution={Université du Québec en Abitibi-Témiscamingue},
note={CEFTMS, Fenton, N.J.},
url={https://depositum.uqat.ca/},
}
@PhdThesis{RodriguezRodriguez2022,
author = {Rodriguez-Rodriguez, J.},
school = {Université du Québec en Abitibi-Témiscamingue},
title = {Dominance by coniferous versus broadleaf deciduous trees in boreal forests as a driver of understory vegetation and associated microorganisms},
year = {2022},
note = {CEFTMS, Bergeron, Y. and Fenton, N.J. and Kembel, S.W.},
owner = {Daniel Lesieur},
timestamp = {2022-11-22},
url = {https://depositum.uqat.ca/},
}
@MastersThesis{Pawuluwage2021,
author = {Pawuluwage, S.M.},
school = {Université du Québec en Abitibi-Témiscamingue},
title = {Mycorrhizal communities and their effect on tree growth at a post-mining site/ Les communautés mycorhiziennes et leur effet sur la croissance des arbres sur un site post-minier},
year = {2021},
note = {CEFTMS, Marchand, P. and Fenton, N.J.},
owner = {Daniel Lesieur},
timestamp = {2022-11-17},
url = {https://depositum.uqat.ca/id/eprint/1305/},
}
@Article{YinMartineauFenton2022,
author = {Yin, X. and Martineau, C. and Fenton, N.J.},
journal = {Ecological Indicators},
title = {Synergistic effects in mine offsite landscapes: Predicted ecosystem shifts could exacerbate mining effects on bryophyte community structure},
year = {2022},
note = {Cited by: 0; All Open Access, Gold Open Access},
volume = {144},
abstract = {Global change is shifting ecosystem type relative abundance in boreal forests, while the green energy transition results in increased mining activities around the globe. The interaction and consequent effects of these two trends on biodiversity have not been examined in depth. Bryophytes species can be used as indicators to measure these effects because they play key ecological roles in boreal forests. We identified and evaluated the interaction between ecosystem type (i.e., coniferous, deciduous, mixed forest and open canopy) and mining on microhabitat scale bryophyte diversity and composition in 1-km landscapes surrounding six mine sites at different stages of the mining lifecycle in the Canadian boreal forest. Irrespective of microhabitat type, the combined effects of ecosystem type and mining stage were interactive on bryophytes. Bryophyte richness and community composition were negatively affected by offsite effects of mines in only deciduous and mixed forests. The interacted effects on bryophyte richness mainly occurred on the ground r microhabitats. We also found that deciduous, mixed forests (coniferous forest as a reference) and mines had a negative impact on the abundance of feather mosses and sphagna. Furthermore, indicator species were identified for areas affected by mines (Pohlia nutans and Dicranum polysetum) and for control areas (Sphagnum angustifolium and Plagiomnium cuspidatum). Our results suggest the predicted ecosystem shifts with global changes, from coniferous to deciduous forests, could potentially increase the effects of mining on forest ecosystem resistance through the changes in bryophyte community structure. Adding microhabitats (i.e., adding coarse woody debris) near mine sites is a potential strategy to maintain species richness. Collectively, these findings advance our understanding of how mining affects biodiversity and highlight the importance of considering mine offsite landscapes in future environmental evaluations of development projects in the context of global changes. © 2022},
author_keywords = {Climate changes; Epiphytes; Indirect impacts; Microhabitats; Mining activities; Taiga},
doi = {10.1016/j.ecolind.2022.109555},
keywords = {Canada; Biodiversity; Ecosystems; Forestry; Life cycle; Plants (botany); Boreal forests; Bryophyte community; Community structures; Epiphyte; Global change; Indirect impact; Microhabitats; Mining activities; Mixed forests; Taiga; boreal forest; bryophyte; microhabitat; mining; species diversity; species richness; Climate change},
publication_stage = {Final},
source = {Scopus},
type = {Article},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140141441&doi=10.1016%2fj.ecolind.2022.109555&partnerID=40&md5=d19be4947d9eaf661f110a5fe693e7af},
}
@PhdThesis{Cerrejon2022,
author = {Cerrejon, C.},
school = {Université du Québec en Abitibi-Témiscamingue},
title = {Comprendre les patrons de biodiversité des cryptogames (bryophytes et lichens) dans les forêts boréales grâce à la télédétection.},
year = {2022},
note = {CEFTMS, Fenton, N.J. and Valeria, O.},
owner = {Daniel Lesieur},
timestamp = {2022-10-26},
url = {https://depositum.uqat.ca/id/eprint/1381/},
}
@MastersThesis{Garant2022,
title = {Impact de la proportion de mélèze laricin en canopée sur la composition, la diversité et les traits fonctionnels des plantes vasculaires et des bryophytes en sous-bois},
author = {Garant, A.},
school = {Université du Québec en Abitibi-Témiscamingue}
year = {2022},
note = {CEFTMS, Fenton, N.J. and Bergeron, Y.},
abstract = {Le mélèze est le seul conifère à feuille caduque en Amérique du Nord. Cette caractéristique distingue la fonction écosystémique du mélèze des autres conifères et des feuillus. Afin de mieux connaître sa fonction écosystémique en forêt boréale, nous avons étudié son impact sur la composition, la diversité et les traits fonctionnels des communautés de plantes vasculaires et de bryophytes. Nous avons donc déterminé les caractéristiques hydrogéochimiques du sol, la fermeture et la densité de la canopée, ainsi que la composition et les traits fonctionnels des communautés de plantes vasculaires et de bryophytes de sous-bois dans 15 sites sélectionnés pour couvrir un gradient de proportion de mélèzes dans des forêts d’épinettes noires du nord du Québec. Dix quadrats d'inventaire et d’échantillonnage ont été placés dans chaque site. De plus, nous avons installé des quadrats de suivi de l’impact de l’ajout d’aiguilles de mélèze sur les communautés de sous-bois dans un site d’épinettes noires dépourvu de mélèze. Nos résultats montrent qu’avec une augmentation de la proportion de mélèze en canopée, il y a une augmentation de la diversité de plantes vasculaires, de la surface spécifique des feuilles, de la concentration en azote, et une diminution de la concentration en carbone foliaire, ainsi qu’une transition des espèces associées aux peuplements pauvres de conifères vers des espèces de milieux plus riches de forêts comportant du mélèze. Pour les bryophytes, nous avons noté une diminution du nombre d’espèces et une mortalité causée par la chute de la litière de mélèze, mais aussi une augmentation de la concentration en azote dans les bryophytes persistantes. En conclusion, ces connaissances montrent que le mélèze en forte proportion aurait comme fonction écosystémique de fertiliser et de structurer le sol, permettant ainsi de rendre des sols organiques improductifs plus productifs. Des études devraient être entreprises pour évaluer la densité optimale de plantation et le temps nécessaire à la création d'un sol productif.},
url = {https://depositum.uqat.ca/id/eprint/1344/},
timestamp = {2022-10-05},
}
@Article{GagnonFentonSiroisEtAl2021,
author = {Gagnon, A. and Fenton, N.J. and Sirois, P. and Boucher, J.-F.},
journal = {Land},
title = {Plant community diversity at two reclaimed mine tailing storage facilities in québec, canada},
year = {2021},
note = {cited By 0},
number = {11},
volume = {10},
abstract = {Mining activities generate residues during the ore concentration process. These wastes are placed into large tailing storage facilities, and upon mine closure, these tailings must be reclaimed. This study aimed to determine how different reclamation methods, involving combinations of planted boreal woody species and organic amendments application (paper mill sludge biosolids, chicken manure, and topsoil) affected plant community diversity at two tailing storage facilities in Québec, Canada. We recorded the composition of the plant communities using the percent cover of plant species within 1 m × 1 m quadrats. At the Niobec mine site, paper mill sludge mixed with topsoil enhanced total plant cover was compared with the use of topsoil only; the former amendment, however, reduced evenness (J′ ) and diversity (1−D) due to the increased growth of grasses and invasive forbs. At the Mont-Wright site, plots having received paper mill sludge mixed with a “Norco” treatment (a mixture of chicken manure, hay, and grass seeds) produced the highest total plant cover. The Norco treatment mixed with topsoil and the single application of topsoil and biosolids produced the highest evenness (J′ ) and diversity (1−D). Overall, organic amendment applications promoted vegetation cover on tailings and contributed to the colonization of diverse plant communities. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},
affiliation = {Département des Sciences Fondamentales, Université du Québec à Chicoutimi, Saguenay, QC G7H 2B1, Canada; Institut de Recherche sur les Forêts, Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, QC J9X 5E4, Canada},
art_number = {1191},
author_keywords = {Biodiversity; Chicken manure; Mine; Organic amendment; Paper mill sludges; Plantation; Reclamation; Tailings; Topsoil; Vegetation},
document_type = {Article},
doi = {10.3390/land10111191},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118868443&doi=10.3390%2fland10111191&partnerID=40&md5=404465416a11001fdbd5136ce564608f},
}
@Article{JeanFentonBergeronEtAl2021,
author = {Jean, M. and Fenton, N.J. and Bergeron, Y. and Nilsson, M.-C.},
journal = {Plant Ecology},
title = {Sphagnum and feather moss-associated N2 fixation along a 724-year chronosequence in eastern boreal Canada},
year = {2021},
note = {cited By 0},
number = {9},
pages = {1007-1022},
volume = {222},
document_type = {Article},
doi = {10.1007/s11258-021-01157-x},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111134887&doi=10.1007%2fs11258-021-01157-x&partnerID=40&md5=9a1a72f83e528a0bb7e0459e1d886c1a},
}
@Article{BoisvertYinFenton2021,
author = {Boisvert, R. and Yin, X. and Fenton, N.J.},
journal = {Botany},
title = {Offsite effects of mining on the frequency and abundance of five understorey plant species in western québec (Canada)},
year = {2021},
note = {cited By 0},
number = {7},
pages = {449-455},
volume = {99},
abstract = {Although the mining industry provides minerals and metals to the global market and represents important economic opportunities, it also constitutes a major anthropogenic disturbance in the ecosystems where it takes place. However, little is known about its offsite impacts on plant communities. We assessed the frequency and the abundance of five common boreal understorey plant species (Coptis trifolia (L.) Salisb., Cornus canadensis L., Linnaea borealis L., Lysimachia borealis (Raf.) U.Manns & Anderb., and Maianthemum canadense Desf.) at different distances around six mines in Abitibi-Témiscamingue and Nord-du-Québec (Québec). Frequency and (or) abundance of Coptis trifolia and M. canadense decreased near mines, suggesting that they might be sensitive to the loss of forest cover, particle deposition, and soil contamination induced by mining. Conversely, the frequency and abundance of Cornus canadensis increased near active mines, which indicates its resilience to the stress caused by mines and its ability to exploit the niche space left by more sensitive species. No effects on Linnaea borealis and Lysimachia borealis were observed. Our study suggests the possible presence of offsite impacts of mines on plant communities. Further studies considering enigmatic impacts should be conducted in order to develop our understanding of the broader environmental footprint of mining activity. © Canadian Science Publishing. All rights reserved.},
affiliation = {Forest Research Institute, Université du Québec en Abitibi-TémiscamingueQC, Canada},
author_keywords = {Boreal forest; Enigmatic impacts; Offsite impacts; Plant communities; Stress},
document_type = {Note},
doi = {10.1139/cjb-2020-0158},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111031725&doi=10.1139%2fcjb-2020-0158&partnerID=40&md5=5bf868e1c1f6dd9483b61d72de6b1490},
}
@Article{https://doi.org/10.1111/jvs.13058,
author = {Crispo, M. and Jean, M. and Fenton, N.J. and Leduc, A. and Bergeron, Y.},
journal = {Journal of Vegetation Science},
title = {Factors explaining the composition and diversity of vascular plant understories along a transcontinental gradient in the Canadian boreal forest},
year = {2021},
number = {4},
pages = {e13058},
volume = {32},
abstract = {Abstract Aim Impacts of longitudinal gradients on species distributions have received less attention than latitudinal gradients. In Canada, precipitation varies longitudinally, with direct effects on plant growth and fire regimes. Despite the geographical extent of Canadian boreal forests, vascular plant diversity is relatively limited, with just under 300 species. Understorey communities comprise most of this diversity and play key roles in forests, affecting succession, nutrient cycling and wildlife habitat. Our objective was to evaluate the relative impacts of local and regional environmental conditions on vascular plant community composition and diversity in the boreal forest. Location Sampling took place in 33 trembling aspen (Populus tremuloides) stands along a transcontinental gradient in precipitation and fire regimes in boreal Canada. Methods We measured community composition and vegetation diversity indices of the vascular understorey in 400-m2 plots and measured environmental variables at the local (drainage, nutrient and light availability, site heterogeneity) and regional (annual temperature and precipitation, fire weather index, landscape heterogeneity) scales. Multivariate analyses and hierarchical model selection were used to analyze patterns. Results Species composition varied longitudinally, with western and eastern species pools. Western indicator species tended to be fire-adapted pioneer species, while indicator species at eastern sites were fire avoiders and late-successional species. Species richness and intra-site beta diversity seemed primarily driven by local variables and did not vary across the country. Species evenness, however, was slightly higher in the western region and decreased under higher precipitation, colder temperatures, and higher landscape-level heterogeneity. Conclusion Our results suggested that even for similar canopy composition environmental variables play a key role in the establishment of plant communities and structure local plant assemblages by selecting or eliminating species from the regional pool, which was also controlled by fire regimes.},
doi = {https://doi.org/10.1111/jvs.13058},
eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.13058},
keywords = {boreal forest, continental scale, environmental factors, local processes, longitudinal gradient, plant diversity, Populus tremuloides, regional processes, species pools, trembling aspen, understorey vegetation},
owner = {Daniel Lesieur},
timestamp = {2021-08-02},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/jvs.13058},
}
@Article{MartinFentonMorin2021,
author = {Martin, M. and Fenton, N.J. and Morin, H.},
title = {Tree-related microhabitats and deadwood dynamics form a diverse and constantly changing mosaic of habitats in boreal old-growth forests},
journal = {Ecological Indicators},
year = {2021},
volume = {128},
pages = {107813},
issn = {1470-160X},
abstract = {Tree-related microhabitats (TreM) and deadwood are two forest attributes providing essential resources for biodiversity conservation and ecosystem services. Old-growth forests are generally defined by a high abundance and diversity of TreM and deadwood, but little is known about TreM and deadwood dynamics once the old-growth stage is reached, in particular in the boreal biome. In this context, knowledge on TreM and deadwood dynamics in old-growth forest stands is necessary to better understand how these forests contribute to biodiversity and ecosystem services. The aim of this study is thus to determine how TreM, and deadwood abundance and diversity vary within boreal old-growth forests. To reach this objective, we surveyed TreM and deadwood attributes, as well as structural and abiotic attributes, in 71 boreal old-growth forests situated in Quebec, Canada. We used hierarchical clustering analysis to identify TreM and deadwood abundance and diversity patterns in the studied stands. We identified five clusters of TreM and deadwood characteristics, which corresponded to three stages of old-growth forest succession: canopy break-up (beginning of the old-growth stage), transition old-growth stage (replacement of the first cohort by old-growth cohorts) and true old-growth stage (first cohort all or almost all gone). The peak in TreM richness and diversity was reached at the transition old-growth stage, whereas the peak for deadwood richness and diversity was reached at the true old-growth stage. Overall, true old-growth forests were defined by a combination of moderate to high TreM density and high deadwood volume, but these values significantly varied among stands depending on past secondary disturbances, stand structure and its composition (black spruce [Picea mariana Mill.] dominated vs mixed black spruce – balsam fir [Abies balsamea (L.) Mill.]). These results therefore underscore the importance of considering old-growth forests as dynamic rather than static ecosystems, as the composition of tree- and deadwood-related microhabitats in the same old-growth stand may markedly change over time. At landscape scale, these results also imply that the mosaic of habitats present in old-growth forests can vary greatly from one location to another, highlighting the importance of maintaining a diversity of old-growth forest structure and composition.},
doi = {https://doi.org/10.1016/j.ecolind.2021.107813},
keywords = {Natural forest, Biodiversity conservation, Biodiversity indicator, Forest succession, Forest dynamics, TreM, Wildlife habitat},
url = {https://www.sciencedirect.com/science/article/pii/S1470160X21004787},
}
@Article{WeiThiffaultBarretteEtAl2021,
author = {Wei, L. and Thiffault, N. and Barrette, M. and Fenton, N.J. and Bergeron, Y.},
journal = {Forest Ecology and Management},
title = {Can understory functional traits predict post-harvest forest productivity in boreal ecosystems?},
year = {2021},
issn = {0378-1127},
pages = {119375},
volume = {495},
abstract = {Understory vegetation plays an important role in maintaining biodiversity, soil nutrient cycling and carbon stocks, yet the ability of understory functional traits to predict forest productivity after harvesting disturbance is unknown. Our objective was to investigate the utility of individual traits (the community-weighted trait mean) and combined information from multiple traits (functional diversity indices) of understory plants in predicting tree diameter growth of black spruce (Picea mariana (Mill.) B.S.P.) after two harvesting methods (clearcutting and careful logging). We used vegetation and tree growth data from a network of field plots (171 plots on 43 sites) established in black spruce dominated forests across Ontario and Quebec, in northeastern Canada. Functional traits (11 traits) of dominant understory species that reflect plant morphology, regeneration strategy, and resource utilization were collected. We then used generalized linear mixed models (GLMMs) to model the response of tree diameter increment to functional diversity indices, community-weighted trait means and their interactions with harvesting method. Our results showed that: 1) at the functional diversity level, functional richness had a positive relationship with tree growth in clear-cut forests, while functional evenness showed a negative and functional divergence a positive relationship with tree growth in careful logging forests; 2) at the individual trait level, understory species with relatively large morphological trait values often promoted tree growth in both forest types, with stronger relationships in careful logging than in clear-cut forests. For regeneration traits, heavier seed weight or permanent seed bank persistence of understory plants had negative relationships with tree growth, and those relationships were either only found in careful logging forests or did not depend on harvesting type. A positive relationship was found between vegetative propagation species and tree growth, which was stronger in careful logging than in clear-cut forests. Species preferring either humid or xeric habitat had positive relationships with tree growth; both shade-tolerant and shade-intolerant species also positively correlated to tree growth. In conclusion, our study shows the important roles of understory traits in predicting tree growth based on both niche complementarity and mass-ratio hypotheses. Moreover, disturbance severity influenced the balance or degree of the positive and negative interactions that occurred between understory plants and black spruce tree growth. We suggest that identifying the threshold of harvesting disturbance severity that can activate facilitation interactions between understory plants and crop trees would be an important topic for future study.},
doi = {https://doi.org/10.1016/j.foreco.2021.119375},
keywords = {Effect traits, Niche complementarity, Mass-ratio hypothesis, Clearcutting, Careful logging, Tree growth},
owner = {Daniel Lesieur},
timestamp = {2021-05-25},
url = {https://www.sciencedirect.com/science/article/pii/S0378112721004631},
}
@MastersThesis{Bourgouin2020,
author = {Bourgouin, M.},
date = {2020},
institution = {Université du Québec en Abitibi-Témiscamingue},
title = {Cartographie prédictive de la distribution de la diversité en bryophyte associée aux forêts matures dans un paysage fortement aménagé à l'aide des indices dérivés de liDAR.},
note = {CEFTMS, Fenton, N.J. and Valeria, O.},
url = {https://depositum.uqat.ca/id/eprint/1238/},
owner = {Daniel Lesieur},
school = {Université du Québec en Abitibi-Témiscamingue},
timestamp = {2021-01-19},
year = {2020},
}
@MastersThesis{Route2020,
author = {Route, T.},
date = {2020},
institution = {Université du Québec en Abitibi-Témiscamingue},
title = {Facteurs environnementaux influençant la biodiversité des lichens à différentes échelles dans le nord-ouest du Québec.},
note = {CEFTMS, Fenton, N.J. },
url = {https://depositum.uqat.ca/id/eprint/1237/},
owner = {Daniel Lesieur},
school = {Université du Québec en Abitibi-Témiscamingue},
timestamp = {2021-01-19},
year = {2020},
}
@MastersThesis{Liyanage2020,
author = {Liyanage, N.S.},
date = {2020},
institution = {Université du Québec en Abitibi-Témiscamingue},
title = {Genetic differentiation and structure of boreal populations of crossocalyx hellerianus (nees ex lindenb.) meyl. in North America.},
note = {CEFTMS, Fenton, N.J. },
url = {http://depositum.uqat.ca},
owner = {Daniel Lesieur},
school = {Université du Québec en Abitibi-Témiscamingue},
timestamp = {2021-01-19},
year = {2020},
}
@Article{BarbeBouchardFenton2020,
author = {Barbé, M. and Bouchard, M. and Fenton, N.J.},
journal = {Ecosphere},
title = {Examining boreal forest resilience to temperature variability using bryophytes: forest type matters},
year = {2020},
note = {cited By 0},
number = {8},
volume = {11},
abstract = {The capacity of individual species to tolerate environmental changes is a major driver of ecosystem resilience. This subject has been a hot topic in boreal forests due to the greater effect of climate change anticipated at northern latitudes. However, to date it has been mainly examined for trees, with comparatively little emphasis on other species groups. In this study, bryophytes were sampled in the boreal forest of Québec (Canada) using a stratified sampling design allowing us to separate the effect of dominant canopy composition (two types: coniferous and mixedwood) and of the spatial climatic gradient (relatively warm and relatively cold sites) on bryophyte community structure (species richness and composition). The results indicated that bryophyte composition was different between coniferous and mixedwood stands. The impacts of spatial variation in climate were more visible in mixedwood than coniferous stands, indicating an interaction between stand type and climate. Specifically, bryophytes from mixedwood stands, and particularly specialist communities associated with deadwood and live tree bases, were climate-sensitive and represent a potential target group to investigate the effects of climate change. In contrast, bryophyte communities from coniferous stands are stand structure-sensitive, with little response to climate, presumably partly because coniferous canopies buffer climatic variations. Since bryophyte community sensitivity to regional variations in climatic conditions depends on dominant canopy characteristics and microhabitat availability, we suggest that adapted forest management practices could play a role in attenuating climate change impacts on these organisms. © 2020 The Authors.},
affiliation = {Institut de recherche sur les forêts, 445 Boulevard de l’Université, Rouyn-Noranda, QC J9X 4E5, Canada; Direction de la Recherche Forestière, Ministère des Forêts, de la Faune et des Parcs, 2700 rue Einstein, Quebec, QC G1P 3W8, Canada},
art_number = {e03232},
author_keywords = {boreal forests; climate change; generalist bryophytes; liverwort; mixed stands; mosses; resilience; specialist bryophytes},
document_type = {Article},
doi = {10.1002/ecs2.3232},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089972190&doi=10.1002%2fecs2.3232&partnerID=40&md5=0830f62a55605972ea633492bcd22bb9},
}
@PhdThesis{Martin2019,
title = {Typologie, dynamique et valeur de conservation des vieilles forêts boréales résineuses de l’Est du Canada en territoire aménagé},
author = {Martin, M.},
school = {Université du Québec à Chicoutimi}
year = {2019},
note = {CEFTMS, Fenton, N.J. and Morin, H.},
url = {https://constellation.uqac.ca/5471/},
timestamp = {2020-09-09},
}
@Article{CerrejonValeriaMansuyEtAl2020,
author = {Cerrejón, C. and Valeria, O. and Mansuy, N. and Barbé, M. and Fenton, N.J.},
journal = {Ecological Indicators},
title = {Predictive mapping of bryophyte richness patterns in boreal forests using species distribution models and remote sensing data},
year = {2020},
note = {cited By 0},
volume = {119},
abstract = {Bryophytes represent an essential component of global biodiversity and play a significant role in many ecosystems, including boreal forests. In Canadian boreal forests, industrial exploitation of natural resources threatens bryophyte species and the ecological processes and services they support. However, the consideration of bryophytes in conservation issues is limited by current knowledge gaps on their distribution and diversity patterns. This is mainly due to the ineffectiveness of traditional field surveys to acquire information over large areas. Using remote sensing data in combination with species distribution models (SDMs), we aim to predict and map diversity patterns (in terms of richness) of i) total bryophytes, and ii) bryophyte guilds (mosses, liverworts and sphagna) in 28,436 km2 of boreal forests of Quebec (Canada). A bryophyte presence/absence database was used to develop four response variables: total bryophyte richness, moss richness, liverwort richness and sphagna richness. We pre-selected a group of 38 environmental predictors including climate, topography, soil moisture and drainage as well as vegetation. Then a final set of predictors was selected individually for each response variable through a two-step selection procedure. The Random Forest (RF) algorithm was used to develop spatially explicit regression models and to generate predictive cartography at 30 m resolution for the study area. Predictive mapping-associated uncertainty statistics were provided. Our models explained a significant fraction of the variation in total bryophyte and guild level richness, both in the calibration (42 to 52%) and validation sets (38 to 48%), outperforming models from previous studies. Vegetation (mainly NDVI) and climatic variables (temperature, precipitation, and freeze–thaw events) consistently appeared among the most important predictors for all bryophyte groups modeled. However, guild-level models identified differences in important factors determining the richness of each of the guilds and, therefore, in their predicted richness patterns. For example, the predictor number of days > 30 °C was especially relevant for liverworts, while drainage class, topographic position index and PALSAR HH-polarized L-band were identified among the most important predictors for sphagna. These differences have important implications for management and conservation strategies for bryophytes. This study provides evidence of the potential of remote sensing for assessing and making predictions on bryophyte diversity across the landscape. © 2020 Elsevier Ltd},
affiliation = {Institut de Recherche sur les Forêts, Université du Québec en Abitibi-Témiscamingue, 445 boul. de l'Université, Rouyn-Noranda, Québec J9X 5E4, Canada; Natural Resources Canada, Canadian Forest Service, Northern Forestry Centre, 5320 122 st., Edmonton, AB T6H 3S5, Canada; Exploramer, 1 rue du Quai, Sainte-Anne-des-Monts, Québec G4V 2B6, Canada},
art_number = {106826},
author_keywords = {Black spruce forests; Conservation; Digital mapping; Indicators; Machine learning; Predictive modeling},
document_type = {Article},
doi = {10.1016/j.ecolind.2020.106826},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089596334&doi=10.1016%2fj.ecolind.2020.106826&partnerID=40&md5=c14e7481a4cc17bc73aa6ac1d318dc18},
}
@Article{PacePareFentonEtAl2020,
author = {Pace, M. and Pare, D. and Fenton, N.J. and Bergeron, Y.},
title = {Effects of lichen, Sphagnum spp. and feather moss leachates on jack pine and black spruce seedling growth},
journal = {Plant and Soil},
year = {2020},
number = {452},
pages = {441-455},
month = jun,
issn = {1573-5036},
abstract = {The main objective of this study was to evaluate the influence of leachates from three typical boreal forest ground layers on young tree growth and to explore the linkages between the chemical composition of the leachates, tree growth, the allocation between belowground and aboveground parts, and ectomycorrhizal colonization.},
owner = {Daniel Lesieur},
refid = {Pacé2020},
timestamp = {2020-06-11},
url = {https://doi.org/10.1007/s11104-020-04587-0},
}
@Article{MartinFentonMorin2020,
author = {Martin, M. and Fenton, N.J. and Morin, H.},
title = {Boreal old-growth forest structural diversity challenges aerial photographic survey accuracy},
journal = {Canadian Journal of Forest Research},
year = {2020},
volume = {50},
number = {2},
pages = {155-169},
month = feb,
issn = {0045-5067},
abstract = {The erosion of old-growth forests in boreal managed landscapes is a major issue currently faced by forest managers; however, resolving this problem requires accurate surveys. The intention of our study was to determine if historic operational aerial forest surveys accurately identified boreal old-growth forests in Quebec, Canada. We first compared stand successional stages (even-aged vs. old-growth) in two aerial surveys performed in 1968 (preindustrial aerial survey) and 2007 (modern aerial survey) on the same 2200 km(2) territory. Second, we evaluated the accuracy of the modern aerial survey by comparing its results with those of 74 field plots sampled in the study territory between 2014 and 2016. The two aerial surveys differed significantly; 80.8% of the undisturbed stands that were identified as "old-growth" in the preindustrial survey were classified as "even-aged" in the modern survey, and 60% of the stands identified as "old-growth" by field sampling were also erroneously identified as "even-aged" by the modern aerial survey. The scarcity of obvious old-growth attributes in boreal old-growth forests, as well as poorly adapted modern aerial survey criteria (i.e., criteria requiring high vertical stratification and significant changes in tree species composition along forest succession), were the main factors explaining these errors. It is therefore likely that most of Quebec's boreal old-growth forests are currently not recognized as such in forest inventories, challenging the efficacy of sustainable forest management policies.},
doi = {10.1139/cjfr-2019-0177},
eissn = {1208-6037},
unique-id = {ISI:000510393200008},
}
@Article{MartinBoucherFentonEtAl2020,
author = {Martin, M. and Boucher, Y. and Fenton, N.J. and Marchand, P. and Morin, H.},
title = {Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada},
journal = {Forest Ecology and Management},
year = {2020},
volume = {458},
note = {cited By 0},
abstract = {The impact of traditional even-aged forest management on landscape age structure, tree composition, and connectivity has been well documented. Very little, however, is known about the impact on stand structural diversity. This study aims to compare the structural and abiotic characteristics of forest stands disturbed by clearcut logging and by stand-replacing fire in Quebec's boreal landscapes. We hypothesized that unlike fire, logging specifically targeted stands having a higher economic value, i.e., merchantable volume, leaving altered forest characteristics on post-harvested landscapes. We compared two aerial forest surveys of a 2200 km2 study area, one survey completed before any logging activity (preindustrial survey; 1980s), and the second survey collected >10 years after logging activity (modern survey; 2000s). Forest stands at the time of the preindustrial survey were primary forests. We identified stands as either burned, logged, or left aside after forest management of the area (remaining stands) between the two surveys and compared their structural and abiotic characteristics using logistic regression. The structural and abiotic characteristics of burned and logged stands differed significantly. Relative to the burned stands, logged stands were older, denser, and marked by poorer drainage and a higher proportion of black spruce; therefore post-harvest and post-burn landscapes differed in terms of their structural diversities. Traditional even-aged forest management has significantly altered the boreal forest landscape by targeting specific stands having higher economic value and leaving behind stands of lower economic value. Remaining high economic stands should be protected, and a more balanced approach to harvesting must be used in the context of ecosystem-based management. © 2019 Elsevier B.V.},
affiliation = {Département des Sciences fondamentales, Université du Québec à Chicoutimi, 555 boul. de l'Université, Chicoutimi, Québec G7H 2B1, Canada; Centre d’étude de la forêt, Université du Québec à Montréal, P.O. Box 8888, Centre-ville Station, Montréal, QC H3C 3P8, Canada; Direction de la Recherche Forestière, Ministère des Forêts, de la Faune et des Parcs (MFFP), 2 700 rue Einstein, Québec, QC G1P 3W8, Canada; Institut de Recherche sur les Forêts, Université du Québec en Abitibi-Témiscamingue, 445 boul. de l'Université, Rouyn-Noranda, Québec J9X 5E4, Canada},
art_number = {117765},
author_keywords = {Disturbance dynamics; Ecosystem-based management; Forest fire; Forestry practices; Overmature forests; Preindustrial landscape},
document_type = {Article},
doi = {10.1016/j.foreco.2019.117765},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076565576&doi=10.1016%2fj.foreco.2019.117765&partnerID=40&md5=c26c579f4ed8bc9afebb2511f2706588},
}
@MastersThesis{Tremblay2019a,
title = {Les flux de CO2 du sol en forêt boréale paludifiée lors de la remise en production après cprs et mise en andains en forêt boréale et de la végétalisation de résidus miniers},
author = {Tremblay, D.},
school = {Université du Québec en Abitibi-Témiscamingue}
year = {2019},
note = {CEFTMS, Fenton, N.J. and Guittonny, M. and Paré, D.},
abstract = {Le CO2 est un gaz à effet de serre et réduire ses émissions est une façon de combattre les changements climatiques. Les basses-terres de l’Abitibi et de la baie James sont une région où le manque de connaissances concernant l’impact de l’aménagement forestier sur les émissions de CO2 du sol est reconnu. Le but de cette étude est de combler ce manque. Au cours de deux saisons de croissance, nous avons observé l’effet de la CPRS, suivie ou non de scarifiage ou de hersage, du déblaiement hivernal et de la mise en andains de la couche superficielle du sol et de la végétalisation d’un parc à résidus miniers sur les émissions de CO2 du sol et les avons comparées à un témoin en forêt non-perturbée. Nous avons mesuré les flux de CO2 (μmol m-2 s-1) sur différents substrats en CPRS, à trois positions relatives à l’andain (sommet, pente, base) au site du déblaiement hivernal et sur des parcelles, végétalisées ou non, de tourbe au site minier, ainsi que sur la mousse en forêt non-perturbée. De plus, la température du sol et l’humidité de l’air furent mesurées pour servir de variables explicatives des émissions de CO2. Ces émissions de CO2 sont modulées principalement par la température et l’humidité. L’hypothèse générale était que les émissions de CO2 allaient être modulées par le niveau de perturbation du milieu par leur impact sur la température et l’humidité. Relativement au témoin en forêt non-perturbée, les émissions de CO2 furent plus basses partout sauf en CPRS suivie de hersage (0,57 μmol m-2 s-1), en andains (3,18 au sommet et 3,78 μmol m-2 s-1 dans la pente) et dans les sites non-végétalisés dans la portion acide du parc à résidus miniers (1,05 μmol m-2 s-1). Cinq ans après leur application, tous les traitements en CPRS émettent moins de CO2 que le témoin (0,52 μmol m-2 s-1), sauf pour la CPRS suivie de hersage. Les andains émettent beaucoup (jusqu’à plus de 9 fois) plus de CO2 à leur sommet (3,18 μmol m-2 s-1) et dans leurs pentes (3,78 μmol m-2 s-1) qu’à la base (0,41 μmol m-2 s-1), où le sol est déblayé, même 3 ans après que le traitement eut été effectué. L’importation de tourbe sur résidus miniers n’augmente pas les émissions de CO2 sur les résidus, ce qui pointe vers une séquestration minérale de carbone par les résidus. En conclusion, l’impact des préparations de terrain étudiées suivant une CPRS en forêt boréale sur le bilan de carbone est faible mais non-nul, lorsque comparé au témoin en forêt non-perturbée. Toutefois, la mise en andain suite à un déblaiement hivernal crée de fortes émissions de CO2 provenant des andains. Ces émissions pourraient être réduites si la tourbe est exportée sur des résidus miniers à proximité à des fins de végétalisation mais de plus amples études sur cette approche doivent être menées pour établir un bilan plus complet des émissions de carbone qui seraient encourues par un tel processus.},
url = {http://depositum.uqat.ca/859/},
timestamp = {2020-01-06},
}
@MastersThesis{Opoku-Nyame2019,
title = {Les impacts de quatorze ans de coupe partielle et de coupe totale sur les communautés de bryophytes epyxiliques de la pessière noire à mousse},
author = {Opoku-Nyame, J.},
school = {Université du Québec en Abitibi-Témiscamingue}
year = {2019},
note = {CEFTMS, Fenton, N.J. and Leduc, A.},
abstract = {La récolte forestière affecte le microclimat de la forêt ainsi que la végétation présente en sous-bois et l’abondance de débris ligneux. Les récoltes effectuées à des intervalles de temps courts et réguliers ont également des impacts sur les vieilles forêts, qui présentent des caractéristiques permettant de soutenir de nombreuses espèces forestières. L’altération de ces attributs de la forêt au cours de la récolte peut également mener, localement, à la perte de certaines espèces. La coupe partielle a été proposée dans l’objectif de réduire les impacts négatifs associés avec la récolte forestière. Cette approche permettrait de favoriser la succession d’une structure forestière pouvant supporter les espèces adaptées aux conditions des forêts matures voire âgées. Les bryophytes épixiliques (qui s’établissent sur le bois mort) sont connues pour être vulnérables à la récolte forestière en raison de leur sensibilité au microclimat et à la modification du substrat. Pour cette raison, ils ont été utilisés comme espèces indicatrices pour évaluer l’efficacité de la coupe partielle à réduire les impacts de la récolte sur la végétation forestière. Des premières études effectuées après récolte ont démontré le potentiel de la coupe partielle à réduire les impacts de la récolte sur les bryophytes épixiliques. Cependant, la capacité de ces coupes partielles à maintenir la communauté de bryophytes épixiliques et l’assemblage d’espèces associées aux vieilles forêts sur le long terme demeure incertain, et par conséquent, cet aspect requiert une étude à plus long terme.
Ce mémoire évalue l’efficacité de la coupe partielle à maintenir la structure de la forêt résiduelle qui supporte les bryophytes épixiliques et les espèces adaptées aux forêts matures quatorze ans après récolte. Nous avons examiné les bryophytes épixiliques et leur microhabitat dans des parcelles permanentes établies en forêt boréale dominée par l’Épinette noire dans le nord-est du Québec (Canada). Plus spécifiquement, nous avons 1) étudié les changements dans les conditions des microhabitats (les caractéristiques du bois mort et du microclimat) dans des parcelles présentant différentes intensités de récolte (non coupées, avec coupe totale et avec coupe partielle); 2) étudié les changements dans la composition, la diversité et les traits fonctionnels d’espèces de bryophytes épixiliques résultant de ces variations dans les conditions de l’habitat; 3) comparé nos résultats avec ceux d’une étude initiale qui avait été effectuée après récolte et une chronoséquence de forêts matures pour évaluer le changement temporel et la similarité des communautés de bryophytes dans les coupes partielles et les vieilles forêts. Le volume de debris ligneux grossier était plus faible dans la classe de décomposition précoce et plus élevé dans la classe de décomposition avancée dans les peuplements issus des coupes partielle et totale que dans les peuplements témoin. Les coupes partielles supportaient une communauté de bryophytes épixiliques plus riche en comparaison avec les parcelles non coupées et les coupes totales. Des tendances similaires avaient été observées dans l’étude initiale, cependant, la richesse des espèces et la fréquence de leur occurrence a doublé après 9 ans. Aussi, les espèces épixiliques se retrouvaient principalement sur les débris ligneux, alors qu’au cours de l’étude initiale, la plupart des espèces épixiliques se retrouvaient sur le sol forestier. La richesse des espèces de petite taille, des hépatiques et d’espèces avec reproduction végétative ou sexuée rare était supérieure dans les parcelles non coupées et les couples partielles par rapport aux coupes totales. De plus, la composition en espèces s’établissant sur le bois dans les coupes partielles était plus semblable à celle des vieilles forêts en comparaison avec celle de l’étude initiale. L’ouverture de la canopée, le stade de décomposition du bois mort et le diamètre étaient les principaux facteurs expliquant les patrons observés en ce qui a trait à la richesse des espèces étudiées, leur composition et leurs traits fonctionnels. En conclusion, les coupes partielles réduisent l’impact de la récolte en produisant des conditions de microhabitats favorables, qui permettent de supporter les espèces de bryophytes épixiliques et les espèces adaptées aux forêts matures. Ainsi, la coupe partielle représente une meilleure option pour atteindre les objectifs de conservation des espèces et de leur habitat par rapport à ce qui avait été obtenu dans le passé par les coupes totales. Cependant, l’apport limité de nouvelles sources de débris ligneux représente une préoccupation potentielle de cette approche sur le long terme. L'apport en bois mort à long terme devrait faire l'objet d'un suivi afin d’assurer le maintien des bryophytes et des autres organismes qui dépendent du bois mort en général.},
url = {http://depositum.uqat.ca/853/},
timestamp = {2020-01-06},
}
@Article{WeiFentonLafleurEtAl2019,
author = {Wei, L. and Fenton, N.J. and Lafleur, B. and Bergeron, Y.},
title = {The Combined Role of Retention Pattern and Post-Harvest Site Preparation in Regulating Plant Functional Diversity: A Case Study in Boreal Forest Ecosystems},
journal = {Forests},
year = {2019},
volume = {10},
number = {8},
issn = {1999-4907},
abstract = {Changes in the light availability in forests generated by diversified retention patterns (e.g., clear cut, partial harvest) have been shown to strongly filter the plant species present. Modified soil microsite conditions due to post-harvest site preparation (e.g., mechanical site preparation, prescribed fire) might also be an important determinant of plant diversity. The objective here was to detect how retention pattern and post-harvest site preparation act as filters that explain the understory functional diversity in boreal forests. We also assessed whether these effects were dependent on forest attributes (stand type, time since fire, and time since harvest). We retrieved data from seven different studies within 101 sites in boreal forests in Eastern Canada. Our data included forests harvested with two retention patterns: careful logging and clear cut, plus unharvested control forests. Three post-harvest site preparation techniques were applied: plow or disk trenching after careful logging, and prescribed fire after clear cut. We collected trait data (10 traits) representing plant morphology, regeneration strategy, or resource utilization for common species. Our results demonstrated significant variation in functional diversity after harvest. The combined effect of retention pattern and site preparation was the most important factor explaining understory diversity compared to retention pattern only and forest attributes. According to RLQ analysis, harvested forests with site preparation favored traits reflecting resistance or resilience ability after disturbance (clonal guerilla species, geophytes, and species with higher seed weight). Yet harvested forests without site preparation mainly affected understory plant species via their light requirements. Forest attributes did not play significant roles in affecting the relationship between site preparation and functional diversity or traits. Our results indicated the importance of the compounding effects of light variation and soil disturbance in filtering understory diversity and composition in boreal forests. Whether these results are also valid for other ecosystems still needs to be demonstrated.},
article-number = {1006},
doi = {10.3390/f10111006},
owner = {Daniel Lesieur},
timestamp = {2019-11-11},
url = {https://www.mdpi.com/1999-4907/10/11/1006/htm},
}
@Article{FentonSimardBergeron2009,
author = {Fenton, N.J. and Simard, M. and Bergeron, Y.},
title = {Emulating natural disturbances: The role of silviculture in creating even-aged and complex structures in the black spruce boreal Forest of eastern North America},
journal = {Journal of Forest Research},
year = {2009},
volume = {14},
number = {5},
pages = {258-267},
note = {cited By 32},
abstract = {Ecosystem-based forest management is based on the principle of emulating regional natural disturbance regimes with forest management. An interesting area for a case study of the potential of ecosystem-based forest management is the boreal forest of north-western Québec and north-eastern Ontario, where the disturbance regime creates a mosaic of stands with both complex and simple structures. Old-growth stands of this region have multi-storied, open structures, thick soil organic layers, and are unproductive, while young post-fire stands established following severe fires that consumed most of the organic soil show dense and even-sized/aged structures and are more productive. Current forest management emulates the effects of low severity fires, which only partially consume the organic layers, and could lead to unproductive even-aged stands. The natural disturbance and forest management regimes differ in such a way that both young productive and old-growth forests could ultimately be under-represented on the landscape under a fully regulated forest management regime. Two major challenges for ecosystem-based forest management of this region are thus to: (1) maintain complex structures associated with old-growth forests, and (2) promote the establishment of productive post-harvest stands, while at the same time maintaining harvested volume. We discuss different silvicultural approaches that offer solutions to these challenges, namely the use of (1) partial harvesting to create or maintain complex structures typical of old-growth stands, and (2) site preparation techniques to emulate severe soil burns and create productive post-harvest stands. A similar approach could be applied to any region where the natural disturbance regime creates a landscape where both even-aged stands established after stand-replacing disturbances and irregular old-growth stands created by smaller scale disturbances are significant. © The Japanese Forest Society and Springer 2009.},
affiliation = {NSERC-UQAT-UQAM Industrial Chair in Sustainable Forest Management, Université du Québec en Abitibi-Témiscamingue, 445 boul. de l'Université, Rouyn-Noranda, QC J9X 5E4, Canada; Department of Zoology, University of Wisconsin, Birge Hall, 430 Lincoln Dr., Madison, WI 53706, United States},
author_keywords = {Fire; Paludification; Partial cuts; Soil disturbance; Soil organic layer},
document_type = {Review},
doi = {10.1007/s10310-009-0134-8},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350633816&doi=10.1007%2fs10310-009-0134-8&partnerID=40&md5=27c3f9061b23cb6f79df05300825a611},
}
@Article{LeStum-BoivinMagnanGarneauEtAl2019,
author = {Le Stum-Boivin, E. and Magnan, G. and Garneau, M. and Fenton, N.J. and Grondin, P. and Bergeron, Y.},
title = {Spatiotemporal evolution of paludification associated with autogenic and allogenic factors in the black spruce-moss boreal forest of Québec, Canada},
journal = {Quaternary Research},
year = {2019},
volume = {91},
number = {2},
pages = {650-664},
abstract = {Paludification is the most common process of peatland formation in boreal regions. In this study, we investigated the autogenic (e.g., topography) and allogenic (fire and climate) factors triggering paludification in different geomorphological contexts (glaciolacustrine silty-clayey and fluvioglacial deposits) within the Québec black spruce (Picea mariana)-moss boreal forest. Paleoecological analyses were conducted along three toposequences varying from a forest on mineral soil to forested and semi-open peatlands. Plant macrofossil and charcoal analyses were performed on basal peat sections (≤50 cm) and thick forest humus (<40 cm) to reconstruct local vegetation dynamics and fire history involved in the paludification process. Results show that primary paludification started in small topographic depressions after land emergence ca. 8000 cal yr BP within rich fens. Lateral peatland expansion and secondary paludification into adjacent forests occurred between ca. 5100 and 2300 cal yr BP and resulted from low-severity fires during a climatic deterioration. Fires that reduced or eliminated entirely the organic layer promoted the establishment of Sphagnum in microdepressions. Paludification resulted in the decline of some coniferous species such as Abies balsamea and Pinus banksiana. The paleoecological approach along toposequences allowed us to understand the spatiotemporal dynamics of paludification and its impacts on the vegetation dynamics over the Holocene. © 2018 University of Washington. Published by Cambridge University Press.},
affiliation = {Department of Geography, Université du Québec À Montréal, Pavillon Hubert Aquin, 1255 St-Denis, Montréal, QC H2X 3R9, Canada; GEOTOP Research Center, Université du Québec À Montréal, 201 Avenue Président-Kennedy, Montréal, QC H2X 3Y7, Canada; Institut de Recherche sur les Forêts, Université du Québec en Abitibi-Témiscamingue, Campus de Rouyn-Noranda, 445 boul. de l'Université, Rouyn-Noranda, QC J9X 5E4, Canada; Ministère des Forêts de la Faune et des Parcs, Direction de la Recherche Forestière, 2700 rue Einstein, Québec, G1P 3W8, Canada; Department of Biological Science, Université du Québec À Montréal, Pavillon des Sciences Biologiques, 141 av. du Président-Kennedy, Québec, H2X 3Y7, Canada},
author_keywords = {Anthracology; Black spruce-moss forest; Fire; Forested peatlands; Holocene; Paludification; Plant macrofossils; Québec Clay Belt; St.-Lawrence North Shore region; Vegetation succession},
document_type = {Conference Paper},
doi = {10.1017/qua.2018.101},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063929872&doi=10.1017%2fqua.2018.101&partnerID=40&md5=148d75ee3efa99995dba80ae984c30fa},
}
@Article{PaceFentonPareEtAl2019,
author = {Pace, M. and Fenton, N.J. and Pare, D. and Stefani, F.O.P. and Massicotte, H.B. and Tackaberry, L.E. and Bergeron, Y.},
title = {Lichens Contribute to Open Woodland Stability in the Boreal Forest Through Detrimental Effects on Pine Growth and Root Ectomycorrhizal Development},
journal = {Ecosystems},
year = {2019},
volume = {22},
number = {1},
pages = {189--201},
month = {Jan},
issn = {1435-0629},
abstract = {In the boreal forest, open lichen woodlands have been described as an alternative stable state to closed-crown feather moss forest. In this study, we addressed the role of terricolous lichens in stabilizing open woodlands by hindering tree regeneration and/or growth. Based on field and greenhouse experiments, we compared germination and growth of jack pine (Pinus banksiana) on feather mosses (primarily Pleurozium schreberi) and lichens (primarily Cladonia stellaris), using bare mineral soil as a control. Drivers were investigated by (1) manipulating nutrient supply, (2) simulating shade of a closed canopy on the ground layer with the assumption this would mitigate lichen influence on pine growth, and (3) examining pine root ectomycorrhizal colonization and diversity as indicators of pine ability to take up nutrients. Total growth of 6-month-old greenhouse and 2--3-year-old field seedlings, as well as belowground growth of 2-year-old greenhouse seedlings, was significantly greater in moss than in lichen. Seed germination was not affected by ground cover type. Although field phosphorus and base cation availability was greater in mosses than in lichens, fertilization did not entirely compensate for the negative effects of lichens on pine growth in the greenhouse. Ground layer shading had no impact on pine growth. Lichens were associated with reduced abundance and modified composition of the root ectomycorrhizal community. By suggesting that terricolous lichens constitute a less favorable growth substrate than mosses for pine, our results support the hypothesis that lichens contribute to open woodland stability in the potentially closed-crown feather moss forest.},
day = {01},
doi = {10.1007/s10021-018-0262-0},
owner = {Daniel Lesieur},
timestamp = {2019-02-12},
url = {https://doi.org/10.1007/s10021-018-0262-0},
}
@Article{BruelheideDenglerPurschkeEtAl2018,
author = {Bruelheide, H. and Dengler, J. and Purschke, O. and Lenoir, J. and Jiménez-Alfaro, B. and Hennekens, S.M. and Botta-Dukát, Z. and Chytrý, M. and Field, R. and Jansen, F. and Kattge, J. and Pillar, V.D. and Schrodt, F. and Mahecha, M.D. and Peet, R.K. and Sandel, B. and van Bodegom, P. and Altman, J. and Alvarez-Dávila, E. and Arfin Khan, M.A.S. and Attorre, F. and Aubin, I. and Baraloto, C. and Barroso, J.G. and Bauters, M. and Bergmeier, E. and Biurrun, I. and Bjorkman, A.D. and Blonder, B. and Čarni, A. and Cayuela, L. and Černý, T. and Cornelissen, J.H.C. and Craven, D. and Dainese, M. and Derroire, G. and De Sanctis, M. and Díaz, S. and Doležal, J. and Farfan-Rios, W. and Feldpausch, T.R. and Fenton, N.J. and Garnier, E. and Guerin, G.R. and Gutiérrez, A.G. and Haider, S. and Hattab, T. and Henry, G. and Hérault, B. and Higuchi, P. and Hölzel, N. and Homeier, J. and Jentsch, A. and Jürgens, N. and Kącki, Z. and Karger, D.N. and Kessler, M. and Kleyer, M. and Knollová, I. and Korolyuk, A.Y. and Kühn, I. and Laughlin, D.C. and Lens, F. and Loos, J. and Louault, F. and Lyubenova, M.I. and Malhi, Y. and Marcenò, C. and Mencuccini, M. and Müller, J.V. and Munzinger, J. and Myers-Smith, I.H. and Neill, D.A. and Niinemets, Ü. and Orwin, K.H. and Ozinga, W.A. and Penuelas, J. and Pérez-Haase, A. and Petřík, P. and Phillips, O.L. and Pärtel, M. and Reich, P.B. and Römermann, C. and Rodrigues, A.V. and Sabatini, F.M. and Sardans, J. and Schmidt, M. and Seidler, G. and Silva Espejo, J.E. and Silveira, M. and Smyth, A. and Sporbert, M. and Svenning, J.-C. and Tang, Z. and Thomas, R. and Tsiripidis, I. and Vassilev, K. and Violle, C. and Virtanen, R. and Weiher, E. and Welk, E. and Wesche, K. and Winter, M. and Wirth, C. and Jandt, U.},
title = {Global trait–environment relationships of plant communities},
journal = {Nature Ecology & Evolution},
year = {2018},
volume = {2},
number = {12},
pages = {1906-1917},
note = {cited By 1},
abstract = {Plant functional traits directly affect ecosystem functions. At the species level, trait combinations depend on trade-offs representing different ecological strategies, but at the community level trait combinations are expected to be decoupled from these trade-offs because different strategies can facilitate co-existence within communities. A key question is to what extent community-level trait composition is globally filtered and how well it is related to global versus local environmental drivers. Here, we perform a global, plot-level analysis of trait–environment relationships, using a database with more than 1.1 million vegetation plots and 26,632 plant species with trait information. Although we found a strong filtering of 17 functional traits, similar climate and soil conditions support communities differing greatly in mean trait values. The two main community trait axes that capture half of the global trait variation (plant stature and resource acquisitiveness) reflect the trade-offs at the species level but are weakly associated with climate and soil conditions at the global scale. Similarly, within-plot trait variation does not vary systematically with macro-environment. Our results indicate that, at fine spatial grain, macro-environmental drivers are much less important for functional trait composition than has been assumed from floristic analyses restricted to co-occurrence in large grid cells. Instead, trait combinations seem to be predominantly filtered by local-scale factors such as disturbance, fine-scale soil conditions, niche partitioning and biotic interactions. © 2018, The Author(s), under exclusive licence to Springer Nature Limited.},
affiliation = {Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle, Germany; German Centre for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Leipzig, Germany; Research Group Vegetation Ecology, Institute of Natural Resource Sciences, Zurich University of Applied Sciences, Wädenswil, Switzerland; Plant Ecology, Bayreuth Center of Ecology and Environmental Research, University of Bayreuth, Bayreuth, Germany; UR ‘Ecologie et Dynamique des Systèmes Anthropisés’ (EDYSAN, UMR 7058 CNRS-UPJV), CNRS, Université de Picardie Jules Verne, Amiens, France; Research Unit of Biodiversity (CSIC/UO/PA), University of Oviedo, Campus de Mieres, Mieres, Spain; Team Vegetation, Forest and Landscape Ecology, Wageningen Environmental Research (Alterra), Wageningen, Netherlands; GINOP Sustainable Ecosystems Group, MTA Centre for Ecological Research, Tihany, Hungary; Department of Botany and Zoology, Masaryk University, Brno, Czech Republic; School of Geography, University of Nottingham, University Park, Nottingham, United Kingdom; Faculty for Agricultural and Environmental Science, University of Rostock, Rostock, Germany; Max Planck Institute for Biogeochemistry, Jena, Germany; Department of Ecology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Department of Biology, Santa Clara University, Santa Clara, CA, United States; Department of Conservation Biology, Institute of Environmental Sciences, Leiden University, Leiden, Netherlands; Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic; Escuela de Ciencias Agropecuarias y Ambientales – ECAPMA, Universidad Nacional Abierta y a Distancia – UNAD, Sede José Celestino Mutis, Bogotá, Colombia; Department of Forestry and Environmental Science, Shahjalal University of Science and Technology, Sylhet, Bangladesh; Department of Disturbance Ecology, Bayreuth Center of Ecology and Environmental Research, University of Bayreuth, Bayreuth, Germany; Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste Marie, ON, Canada; Department of Biological Sciences, International Center for Tropical Botany, Florida International University, Miami, FL, United States; Campus de Cruzeiro do Su, Universidade Federal do Acre, Acre, Brazil; Department of Green Chemistry and Technology (ISOFYS) and Department of Environment (CAVELab), Faculty of Bioscience Engineering, Ghent University, Gent, Belgium; Vegetation Analysis & Plant Diversity, Albrecht von Haller Institute of Plant Sciences, University of Göttingen, Göttingen, Germany; University of the Basque Country UPV/EHU, Bilbao, Spain; Biodiversity Dynamics in a Changing World (BIOCHANGE) & Section for Ecoinformatics & Biodiversity, Department of Bioscience, Aarhus University, Aarhus, Denmark; Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, United Kingdom; Rocky Mountain Biological Laboratory, Crested Butte, CO, United States; Institute of Biology, Scientific Research Center of the Slovenian Academy of Sciences and Arts, Ljubljana, Slovenia; University of Nova Gorica, Nova Gorica, Slovenia; Department of Biology, Geology, Physics and Inorganic Chemistry, Universidad Rey Juan Carlos, Madrid, Spain; Department of Forest Ecology, Faculty of Forestry and Wood Science, Czech University of Life Sciences, Prague, Czech Republic; Department of Ecological Science, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam, Netherlands; Department of Community Ecology, Helmholtz Centre for Environmental Research – UFZ, Halle, Germany; Department of Animal Ecology and Tropical Biology, University of Würzburg, Würzburg, Germany; Cirad, UMR EcoFoG, Campus Agronomique, Kourou, French Guiana; Instituto Multidisciplinario de Biología Vegetal, CONICET and FCEFyN, Universidad Nacional de Córdoba, Córdoba, Argentina; Department of Biology, Wake Forest University, Winston Salem, NC, United States; Herbario Vargas (CUZ), Universidad Nacional de San Antonio Abad del Cusco, Cusco, Peru; Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; Institut de recherche sur les forêts, Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, QC, Canada; Centre d’Ecologie Fonctionnelle et Evolutive (UMR5175), CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE, Montpellier, France; Terrestrial Ecosystem Research Network, School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia; Departamento de Ciencias Ambientales y Recursos Naturales Renovables, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile; UMR 248 MARBEC (CNRS, IFREMER, IRD, UM), Institut Français de Recherche pour l’Exploitation de la MER, Sète, France; The Department of Geography, University of British Columbia, Vancouver, BC, Canada; Institut National Polytechnique Félix Houphouët-Boigny, Yamoussoukro, Cote d'Ivoire; UR Forests & Societies, Cirad, University of Montpellier, Montpellier, France; Departamento de Engenharia Florestal, Universidade do Estado de Santa Catarina, Lages, Brazil; Institute of Landscape Ecology, University of Münster, Münster, Germany; Plant Ecology and Ecosystems Research, University of Göttingen, Göttingen, Germany; Biodiversity, Biocenter Klein Flottbek and Botanical Garden, University of Hamburg, Hamburg, Germany; Department of Vegetation Ecology, Institute of Environmental Biology, University of Wroclaw, Wrocław, Poland; Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, Switzerland; Swiss Federal Research Institute WSL, Birmensdorf, Switzerland; Landscape Ecology Group, Institute of Biology and Environmental Sciences, University of Oldenburg, Oldenburg, Germany; Central Siberian Botanical Garden SB RAS, Novosibirsk, Russian Federation; School of Science, Environmental Research Institute, University of Waikato, Hamilton, New Zealand; Department of Botany, University of Wyoming, Laramie, WY, United States; Naturalis Biodiversity Cente, Leiden University, Leiden, Netherlands; Agroecology, University of Göttingen, Göttingen, Germany; UCA, INRA, VetAgro Sup, UREP, Clermont-Ferrand, France; Department of Ecology and Environmental Protection, Faculty of Biology, University of Sofia, Sofia, Bulgaria; Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, United Kingdom; ICREA, Barcelona, Spain; CREAF, Barcelona, Spain; Millennium Seed Bank, Conservation Science, Royal Botanic Gardens Kew, Ardingly, United Kingdom; AMAP, IRD, CIRAD, CNRS, INRA, Université Montpellier, Montpellier, France; School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom; Conservación y Manejo de Vida Silvestre, Universidad Estatal Amazónica, Puyo, Ecuador; Department of Crop Science and Plant Biology, Estonian University of Life Science, Tartu, Estonia; Landcare Research, Lincoln, New Zealand; Institute for Water and Wetland Research, Radboud University Nijmegen, Nijmegen, Netherlands; Global Ecology Unit, CREAF-CEAB-UAB, CSIC, Cerdanyola del Vallès, Spain; Department of Evolutionary Biology, Faculty of Biology, Ecology and Environmental Sciences, University of Barcelona, Barcelona, Spain; Spanish Research Council (CEAB-CSIC), Center for Advanced Studies of Blanes, Blanes, Spain; School of Geography, University of Leeds, Leeds, United Kingdom; University of Tartu, Tartu, Estonia; Department of Forest Resources, University of Minnesota, St. Paul, MN, United States; Hawkesbury Institute for the Environment, Western Sydney University, Sydney, NSW, Australia; Institute of Ecology and Evolution, Friedrich Schiller University Jena, Jena, Germany; Departamento de Engenharia Florestal, Universidade Regional de Blumenau, Blumenau, Brazil; Data and Modelling Centre, Senckenberg Biodiversity and Climate Research Centre (BiK-F), Frankfurt am Main, Germany; Department of Biology University of La Serena, La Serena, Chile; Laboratório de Botânica e Ecologia Vegetal, Centro de Ciências Biológicas e da Natureza, Museu Universitário, Universidade Federal do Acre, Rio Branco, Brazil; College of Urban and Environmental Sciences, Peking University, Beijing, China; Iwokrama International Centre for Rain Forest Conservation and Development, Georgetown, Guyana; Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece; Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria; Department of Physiological Diversity, Helmholtz Center for Environmental Research – UFZ, Leipzig, Germany; Department of Ecology & Genetics, University of Oulu, Oulu, Finland; Department of Biology, University of Wisconsin – Eau Claire, Eau Claire, WI, United States; Senckenberg Museum of Natural History Görlitz, Görlitz, Germany; International Institute (IHI) Zittau, TU Dresden, Zittau, Germany; Systematic Botany and Functional Biodiversity, University of Leipzig, Leipzig, Germany},
document_type = {Article},
doi = {10.1038/s41559-018-0699-8},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056991288&doi=10.1038%2fs41559-018-0699-8&partnerID=40&md5=dafbff806509115bac5c80e84437bb2a},
}
@Article{MagnanLeStum-BoivinGarneauEtAl2019,
author = {Magnan, G. and Le Stum-Boivin, E. and Garneau, M. and Grondin, P. and Fenton, N.J. and Bergeron, Y.},
title = {Holocene vegetation dynamics and hydrological variability in forested peatlands of the Clay Belt, eastern Canada, reconstructed using a palaeoecological approach},
journal = {Boreas},
year = {2019},
volume = {48},
number = {1},
pages = {131-146},
note = {cited By 0},
abstract = {Forested peatlands are widespread in boreal regions of Canada, and these ecosystems, which are major terrestrial carbon sinks, are undergoing significant transformations linked to climate change, fires and human activities. This study targets millennial-scale vegetation dynamics and related hydrological variability in forested peatlands of the Clay Belt south of James Bay, eastern Canada, using palaeoecological data. Changes in peatland vegetation communities were reconstructed using plant macrofossil analyses, and variations in water-table depths were inferred using testate amoeba analyses. High-resolution analyses of macroscopic charcoal >0.5 mm were used to reconstruct local fire history. Our data showed two successional pathways towards the development of present-day forested peatlands influenced by autogenic processes such as vertical peat growth and related drying, and allogenic factors such as the occurrence of local fires. The oldest documented peatland initiated in a wet rich fen around 8000 cal. a BP shortly after land emergence and transformed into a drier forested bog rapidly after peat inception that persisted over millennia. In the second site, peat started to accumulate from ~5200 cal. a BP over a mesic coniferous forest that shifted into a wet forested peatland following a fire that partially consumed the organic layer ~4600 cal. a BP. The charcoal records show that fires rarely occurred in these peatlands, but they have favoured the process of forest paludification and influenced successional trajectories over millennia. The macrofossil data suggest that Picea mariana (black spruce) persisted on the peatlands throughout their development, although there were periods of more open canopy due to local fires in some cases. This study brings new understanding on the natural variability of boreal forested peatlands which may help predict their response to future changes in climate, fire regimes and anthropogenic disturbances. © 2018 Collegium Boreas. Published by John Wiley & Sons Ltd},
affiliation = {Geotop Research Centre, Université du Québec à Montréal, CP 8888, succ. Centre-Ville, Montréal, QC H3C 3P8, Canada; Department of Geography, Geotop Research Centre, Université du Québec à Montréal, CP 8888, succ. Centre-Ville, Montréal, QC H3C 3P8, Canada; Ministère des Forêts, de la Faune et des Parcs du Québec (MFFP), Direction de la Recherche Forestière, 2700 rue EinsteinQC G1P 3W8, Canada; Forest Research Institute, Université du Québec en Abitibi-Témiscamingue, 445 Boul. de l'Université, Rouyn-Noranda, QC J9X 5E4, Canada; NSERC/UQAT/UQAM Industrial Chair in Sustainable Forest Management, Forest Research Institute, Université du Québec en Abitibi-Témiscamingue, 445 Boul. de l'Université, Rouyn-Noranda, QC J9X 5E4, Canada},
document_type = {Article},
doi = {10.1111/bor.12345},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053541601&doi=10.1111%2fbor.12345&partnerID=40&md5=fdedd726287934af1b159e1fa1c5b917},
}
@Article{MansuyValeriaLaamraniEtAl2018b,
author = {Mansuy, N. and Valeria, O. and Laamrani, A. and Fenton, N.J. and Guindon, L. and Bergeron, Y. and Beaudoin, A. and Légaré, S. and Henneb, M.},
title = {Soil data for mapping paludification in black spruce forests of eastern Canada},
journal = {Data in Brief},
year = {2018},
volume = {21},
pages = {2616 - 2621},
issn = {2352-3409},
abstract = {Soil data and soil mapping are indispensable tools in sustainable forest management. In northern boreal ecosystems, paludification is defined as the accumulation of partially decomposed organic matter over saturated mineral soils, a process that reduces tree regeneration and forest growth. Given this negative effect on forest productivity, spatial prediction of paludification in black spruce stands is important in forest management. This paper provides a description of the soil database to predict organic layer thickness (OLT) as a proxy of paludification in northeastern Canada. The database contains 13,944 OLT measurements (in cm) and their respective GPS coordinates. We collected OLT measurements from georeferenced ground plots and transects from several previous projects. Despite the variety of sources, the sampling design for each dataset was similar, consisting of manual measurements of OLT with a hand probe. OLT measurements were variable across the study area, with a mean ± standard deviation of 21 ± 24 cm (ranging from a minimum of 0 cm to a maximum of 150 cm), and the distribution tended toward positive skewing, with a large number of low OLT values and fewer high OLT values. The dataset has been used to perform OLT mapping at 30-m resolution and predict the risk of paludification in northeastern Canada (Mansuy et al., 2018) [1]. The spatially explicit and continuous database is also available to support national and international efforts in digital soil mapping.},
doi = {https://doi.org/10.1016/j.dib.2018.11.131},
owner = {Daniel Lesieur},
timestamp = {2018-12-11},
url = {http://www.sciencedirect.com/science/article/pii/S2352340918315245},
}
@Article{MansuyValeriaLaamraniEtAl2018a,
author = {Mansuy, N. and Valeria, O. and Laamrani, A. and Fenton, N. and Guindon, L. and Bergeron, Y. and Beaudoin, A. and Legare, S.},
title = {Digital mapping of paludification in soils under black spruce forests of eastern Canada},
journal = {Geoderma Regional},
year = {2018},
volume = {15},
note = {cited By 0},
art_number = {e00194},
document_type = {Article},
doi = {10.1016/j.geodrs.2018.e00194},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056752110&doi=10.1016%2fj.geodrs.2018.e00194&partnerID=40&md5=f7c6e0f162292f6bb7d327f81dcec1ff},
}
@Article{MartinFentonMorin2018,
author = {Martin, M. and Fenton, N.J. and Morin, H.},
title = {Structural diversity and dynamics of boreal old-growth forests case study in Eastern Canada},
journal = {Forest Ecology and Management},
year = {2018},
volume = {422},
pages = {125 - 136},
issn = {0378-1127},
abstract = {Old-growth stands are considered as key components of boreal forest diversity and their preservation is largely integrated into management plans. However, while the differences between old-growth and young forests have largely been studied, little is known about the diversity of boreal old-growth forests. In managed landscapes, the efficacy of old-growth conservation plans may be reduced depending on how these old-growth forests are considered: as a single, homogeneous and steady-state forest type or as multiple, diverse and dynamic forest types. To fulfil this gap, our objectives were: (1) to create a typology of old-growth boreal structures; (2) to observe how these structures are influenced by environmental and temporal parameters; and (3) to elaborate a succession model of old-growth structural dynamics along temporal and environmental gradients. Seventy-one mature and overmature stands were sampled within a 2200 km2 territory situated in Eastern Canada. Cluster analysis divided the sampled stands into two even-aged types, three transition old-growth types and six true old-growth types. Slope, minimum time since last fire and organic horizon depth were the three environmental and temporal parameters influencing the old-growth structures. Paludification-related productivity decline was present in only one old-growth forest type, while the other sites remained productive. These results allowed the creation of three succession models of the dynamics of old-growth stands in the boreal forest of eastern Canada. Boreal stands can undergo numerous structural changes once the old-growth succession process is initiated. An increase in structural diversity when the true old-growth stage is reached, coupled with a variety of secondary disturbance characteristics, favours multiple pathways of structural evolution of these ecosystems over time. Therefore, forest management planning should incorporate this complexity to improve the preservation of old-growth forests in managed territories.},
doi = {https://doi.org/10.1016/j.foreco.2018.04.007},
keywords = {Old-growth, Boreal forest, Typology, Overmature, Succession, Conservation},
url = {http://www.sciencedirect.com/science/article/pii/S0378112718301257},
}
@Article{BoudreaultPaquetteFentonEtAl2018,
author = {Boudreault, C. and Paquette, M. and Fenton, N.J. and Pothier, D. and Bergeron, Y.},
title = {Changes in bryophytes assemblages along a chronosequence in eastern boreal forest of Quebec},
journal = {Canadian Journal of Forest Research},
year = {2018},
volume = {48},
number = {7},
pages = {821-834},
abstract = {Les vieilles forêts sont souvent considérées comme des centres de biodiversité pour les bryophytes en raison de leur grande diversité de niches environnementales, de microhabitats et de leur continuité forestière. Selon cette hypothèse, les vieilles forêts renfermeraient des espèces et traits associés à la dispersion différents des forêts plus jeunes. Dans cette étude, nous avons comparé les bryophytes de vieilles forêts et de forêts plus jeunes en fonction de la composition en espèces, des traits fonctionnels et des associations avec les microhabitats. Nous avons étudié les bryophytes dans 22 sites répartis en trois classes d’âge (18 à >200 ans) en forêt boréale de l’est du Québec. La richesse des hépatiques, des espèces se reproduisant de façon végétative et des espèces dont la reproduction sexuée est infréquente étaient supérieures dans la classe d’âge la plus vieille. Les variables les plus influentes pour expliquer la richesse en espèces étaient les matériaux ligneux grossiers (MLG) et les autres microhabitats, et la variable la plus influente pour expliquer la composition en espèces était la surface terrière du sapin baumier. Les microhabitats les plus souvent associés aux espèces indicatrices étaient la matière organique, les MLG et les dépressions. Nos résultats indiquent que les communautés associées aux vieilles forêts sont potentiellement sensibles à l’aménagement forestier puisqu’elles renferment plusieurs espèces caractérisées par une faible capacité de dispersion et une tolérance moindre à la compétition. Une approche combinant la protection d’habitats essentiels pour les espèces avec une faible capacité de dispersion avec la protection de microhabitats essentiels dans les peuplements avoisinants aménagés est nécessaire pour assurer le succès de recolonisation des espèces avec une faible capacité de dispersion et maintenir la diversité des bryophytes dans les paysages aménagés.},
doi = {10.1139/cjfr-2017-0352},
eprint = {https://doi.org/10.1139/cjfr-2017-0352},
owner = {Daniel Lesieur},
timestamp = {2018-07-02},
url = {
https://doi.org/10.1139/cjfr-2017-0352},
}
@Article{PaceFentenPareEtAl2018,
Title = {Differential effects of feather and Sphagnum spp. mosses on black spruce germination and growth},
Author = {Pace, M. and Fenton, N.J. and Pare, D. and Bergeron, Y.},
Journal = {Forest Ecology and Management },
Year = {2018},
Pages = {10 - 18},
Volume = {415–416},
Abstract = {Abstract The composition of the bryophyte layer influences boreal forest regeneration and growth through its effect on soil conditions. Canopy openings in boreal spruce stands can favor the expansion of Sphagnum spp. in the understory at the expense of feather mosses. We use an experimental approach in both paludified field and greenhouse fully-randomized conditions to examine the differential effects of these two ground cover types on black spruce germination and growth, specifically the role of nutrient limitation in generating these effects. We also tested the impact of ground cover shading, simulating the effect of a closed forest canopy on the ground layer, with the assumption that the stress induced to mosses, especially to Sphagnum spp., would have a beneficial impact on tree growth. The two moss types had no differential effects on spruce germination and 0–6-month-old seedling growth in the greenhouse. However, the growth of 2-year-old seedlings in the greenhouse was lower in Sphagnum spp. than in feather mosses. This negative effect was removed by fertilization, suggesting that soil nutrient availability could explain the seedling growth difference between moss types. Greenhouse 2-year-old seedlings also allocated a greater proportion of biomass to roots in Sphagnum spp. than in feather mosses. In the field, feather and Sphagnum spp. mosses had no differential effects on 3-year-old seedling growth, and ground cover shading did not have any short-term positive impact on spruce growth. Although they were not validated in the field, the results we obtained in the greenhouse suggest that the replacement of feather mosses by Sphagnum spp. mosses do not only affect spruce growth through the build-up of an organic layer often associated with low soil temperature and excess water, but also through more direct effects on nutrient availability. Therefore, silvicultural treatments that would favor Sphagnum spp. expansion at the expense of feather mosses, such as partial or total harvesting with protection of regeneration and soils, may result in subsequent tree growth problems even in sites with moderate organic layer accumulation.},
Doi = {https://doi.org/10.1016/j.foreco.2018.02.020},
ISSN = {0378-1127},
Keywords = {Forest soil},
Owner = {DanielLesieur},
Timestamp = {2018.02.23},
Url = {https://www.sciencedirect.com/science/article/pii/S0378112717320273}
}
@Article{SplawinskiGauthierFentonEtAl2018,
Title = {The colonization of young fire initiated stands by the crustose lichen Trapeliopsis granulosa and its potential effect on conifer establishment and stand succession},
Author = {Splawinski, T.B. and Gauthier, S. and Fenton, N.J. and Houle, D. and Bergeron, Y.},
Journal = {Silva Fennica},
Year = {2018},
Number = {1},
Pages = {7791},
Volume = {52},
Abstract = {The resilience of closed-crown coniferous stands within the boreal forest of North America is highly dependent on successful re-establishment of tree species following fire. A shift from closed-crown forest to open lichen woodland is possible following poor natural regeneration during the initial establishment phase, followed by the development of extensive lichen cover, which may hinder ongoing recruitment. We examined the development of the crustose lichen Trapeliopsis granulosa (Hoffm.) 18 to 21 years following fire within six sites in the boreal forest of northwestern Quebec, and explored its potential to affect ongoing recruitment during early successional stages of stand development. Germination and survivorship trials were conducted within the laboratory to determine the establishment rate of Pinus banksiana Lamb. (jack pine) on T. granulosa, mineral soil, and burnt duff under two separate watering frequencies (observed and drought). Survival and establishment rates of jack pine were highest on burnt duff, and poor on both T. granulosa and mineral soil. Under the drought treatment, no seedlings survived on any substrates. In the field, T. granulosa cover had a positive relationship with mineral soil cover, and negative relationships with duff cover, ericaceous shrub cover, organic layer depth, other lichen cover, and Sphagnum moss cover. No discernable relationship was found between T. granulosa and tree density, rock cover, dead wood cover or other moss cover. The development of extensive T. granulosa cover in fire-initiated stands can impede ongoing recruitment of conifer species due to its poor seedbed quality, thereby maintaining open forests.},
Doi = {10.14214/sf.7791},
Keywords = {lichen woodland; establishment; stand succession.; forest ecology; Pinus banksiana; Trapeliopsis granulosa},
Owner = {Daniel Lesieur},
Timestamp = {2018.01.19},
Url = {https://www.silvafennica.fi/article/7791}
}
@Article{PaceBarretteFentonEtAl2017,
Title = {Ground-layer composition may limit the positive impact of precommercial thinning on boreal stand productivity},
Author = {Pace, M. and Barrette, M. and Fenton, N.J. and Pare, D. and Bergeron, Y.},
Journal = {Forest Science},
Year = {2017},
Note = {cited By 0},
Number = {6},
Pages = {559-568},
Volume = {63},
Abstract = {In the boreal forest, ground-layer composition may modulate the effects of precommercial thinning (PCT) on stand productivity by affecting tree growth conditions. Based on data from 15 years of PCT monitoring in black spruce (Picea mariana) and jack pine (Pinus banksiana) stands, the objectives of this study were to investigate the effects of PCT on ground-layer composition and the way ground-layer composition is related to tree growth, stand productivity, and the PCT impact on stand productivity. PCT favored lichen expansion in xeric sites. The positive impact of PCT on stand productivity after 15 years was lower in sites with high year-one lichen cover, suggesting that the aboveground positive effect of PCT on growth may have been mitigated by a belowground negative feedback resulting from lichen expansion in xeric sites. Although Sphagnum spp. cover was not affected by PCT, 15-year increase in stand productivity was lower in sites with high year-one Sphagnum spp. cover. These results suggest that xeric stands with high lichen cover should not be targeted for PCT because of either null or negative effects on stand productivity. Subhydric stands with high Sphagnum spp. cover should also be avoided because of lower potential stand productivity. © 2017 Society of American Foresters.},
Document_type = {Article},
Doi = {10.5849/FS-2017-062R2},
Owner = {DanielLesieur},
Source = {Scopus},
Timestamp = {2017.12.21},
Url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037543180&doi=10.5849%2fFS-2017-062R2&partnerID=40&md5=ac1a7263876670487fc589e5e4a9c12b}
}
@PhdThesis{Pace2017,
Title = {Rôle de la strate des mousses et lichens dans l’établissement et le maintien de milieux ouverts stables en forêt boréale.},
Author = {Pace, M.},
School = {Université du Québec en Abitibi-Témiscamingue},
Year = {2017},
Month = {Novembre},
Note = {CEFTMS, Bergeron, Y. and Fenton, N.J. and Pare, D.},
Abstract = {En forêt boréale, les accidents de régénération peuvent mener à l’établissement de deux types de milieux ouverts stables : des landes à lichens sur les sites à drainage excessif et des tourbières à sphaignes sur les sites sujets à l’entourbement. Dans les deux cas, l’ouverture à long-terme de la station forestière s’accompagne d’une modification de la composition de la strate des mousses et lichens. Les mousses hypnacées (e.g. Pleurozium schreberi (Brid.) Mitt.) sont remplacées par les lichens (Cladonia spp.) sur les sites fortement drainés, par les sphaignes (Sphagnum spp.) sur les sites faiblement drainés.
Dans la mesure où elle affecte les conditions physico-chimiques et biologiques du sol forestier, la composition de la strate des mousses et lichens contribue à la structuration de la communauté végétale forestière par la facilitation ou non de la régénération des plantes vasculaires. Le rôle de la strate des mousses et lichens dans le déficit de régénération menant à l’établissement et/ou au maintien de milieux ouverts stables est souvent suggéré bien que peu démontré expérimentalement, et les mécanismes sous-jacents restent à identifier. Cette thèse vise à (i) déterminer les effets différentiels des mousses hypnacées, des lichens et des sphaignes sur la régénération et les conditions de croissance du pin gris (Pinus banksiana Lamb.) et de l’épinette noire (Picea mariana [Mill.] B.S.P.), (ii) identifier les mécanismes à l’origine de ces effets, et (iii) évaluer les risques d’accidents de régénération liés à l’ouverture du couvert forestier par éclaircie pré-commerciale.
Comparé à l’absence de couvert au sol ou à la présence d’un couvert de mousses hypnacées, les lichens ont inhibé la croissance du pin gris à chacun des stades de développement analysés, c.-à-d. la croissance des plantules (0-6 mois), la croissance des jeunes plants (2 à 3 ans), ainsi que le développement racinaire fin d’arbres adultes (20-40 ans). D’après nos résultats, les effets du lichen sur la croissance du pin gris seraient liés non seulement à une disponibilité moindre des nutriments dans le sol forestier, mais aussi à l’existence d’interférences chimiques plus directes via l’émission de substances dans la solution du sol. La présence de lichens était également associée à une mycorhization moindre des racines de plantules, ce qui suggère un effet négatif des lichens sur la capacité du pin gris à prélever les éléments nutritifs dans le sol.
Nos résultats confirment que les sphaignes affectent moins l’établissement que la croissance de l’épinette noire. Bien que le défaut de croissance associé à la présence de sphaignes soit principalement lié à l’accumulation à long-terme d’une épaisse couche organique au sol, nos résultats indiquent qu’un couvert peu épais de sphaignes peut également avoir des effets à court-terme sur la disponibilité des nutriments et donc limiter le potentiel de croissance d’un peuplement forestier.
Compte-tenu des effets contrastés des différents types de couvert au sol sur la germination et la croissance ligneuse, il parait tout à fait probable que le remplacement des mousses hypnacées par les lichens ou les sphaignes en cas d’ouverture du couvert forestier contribue à la dégradation des conditions de croissance du pin gris et de l’épinette noire. Nos résultats supportent donc l’hypothèse selon laquelle les changements qui s’opèrent dans la strate des mousses et lichens constituent un moteur de l’établissement et de la stabilisation des milieux ouverts en forêt boréale, en intervenant comme un facteur aggravant du déficit de régénération.
Les pratiques sylvicoles qui ouvrent le couvert forestier, telles que l’éclaircie pré-commerciale (EPC), sont susceptibles dans certaines conditions de favoriser l’expansion des lichens ou des sphaignes aux dépens des mousses hypnacées. Etant données les répercussions négatives de ces changements de composition sur la croissance ligneuse, nos résultats suggèrent que les sites fortement drainés à lichens et les sites à drainage lent avec un fort couvert initial en sphaignes ne devraient pas être ciblés dans la mesure où ils sont moins enclins à répondre favorablement à l’EPC et plus à risque de transiter vers un état de clairière ouverte stable. En améliorant notre compréhension des mécanismes sous-jacents aux effets des lichens et des sphaignes sur la croissance des arbres, les résultats de cette thèse offrent également des pistes intéressantes pour l’élaboration de techniques de restauration de la productivité forestière. Ils suggèrent notamment que la plantation et/ou l’ensemencement à forte densité contribuent à améliorer les conditions de croissance ligneuse en favorisant une refermeture rapide du couvert forestier.},
Keywords = {Lichen, mousse, régénération, pin gris, épinette noire},
Owner = {Daniel Lesieur},
Timestamp = {2017.11.29},
Url = {http://depositum.uqat.ca/731/}
}
@Article{BarbeFentonCanersEtAl2017,
Title = {Interannual variation in bryophyte dispersal: linking bryophyte phenophases and weather conditions},
Author = {Barbe, M. and Fenton, N.J. and Caners, R. and Bergeron, Y.},
Journal = {Botany},
Year = {2017},
Number = {12},
Pages = {1151-1169},
Volume = {95},
Abstract = {Les changements globaux, modifiant les aires de distributions des espèces, rendent opportun d’identifier les variables climatiques jouant sur les patrons de dispersion. Nous étudions les pluies de propagules aériennes (unités sexuelles et asexuelles de dispersion) de bryophytes boréales en réponse au climat. Cette étude est la première effectuée à l’échelle de la communauté et où le cycle phénologique des bryophytes est divisé en phases. Les propagules furent interceptées en 2013 (été et automne) et 2014 (printemps et automne), et les variables climatiques de la région compilées de 2012 à 2014. Les variables climatiques influençant chaque phase du cycle, une saison à deux ans avant la dispersion, furent identifiées pour déterminer quelles phases et quelles variables impactent majoritairement le relargage des propagules. Ce relargage dépendait de variables climatiques contemporaines à la dispersion (directes) et indirectes durant l’hiver et l’été précédent (indirectes). Ces variables joueraient sur la survie/croissance de la plante mère, la fertilisation et le développement des propagules et des sporophytes. Le relargage des propagules semble particulièrement dépendre de l’humidité, de la température et de la longueur de l’hiver des saisons en amont. En divisant leur cycle phénologique en phases nous fournissons ici une méthode novatrice pour comprendre les relations entre la dispersion des bryophytes et le climat.},
Doi = {10.1139/cjb-2017-0054},
Url = {https://doi.org/10.1139/cjb-2017-0054}
}
@Article{TrugmanFentonBergeronEtAl2016,
author = {Trugman, A.T. and Fenton, N.J. and Bergeron, Y. and Xu, X. and Welp, L.R. and Medvigy, D.},
title = {Climate, soil organic layer, and nitrogen jointly drive forest development after fire in the North American boreal zone},
journal = {Journal of Advances in Modeling Earth Systems},
year = {2016},
volume = {8},
number = {3},
pages = {1180-1209},
note = {cited By 0},
abstract = {Previous empirical work has shown that feedbacks between fire severity, soil organic layer thickness, tree recruitment, and forest growth are important factors controlling carbon accumulation after fire disturbance. However, current boreal forest models inadequately simulate this feedback. We address this deficiency by updating the ED2 model to include a dynamic feedback between soil organic layer thickness, tree recruitment, and forest growth. The model is validated against observations spanning monthly to centennial time scales and ranging from Alaska to Quebec. We then quantify differences in forest development after fire disturbance resulting from changes in soil organic layer accumulation, temperature, nitrogen availability, and atmospheric CO2. First, we find that ED2 accurately reproduces observations when a dynamic soil organic layer is included. Second, simulations indicate that the presence of a thick soil organic layer after a mild fire disturbance decreases decomposition and productivity. The combination of the biological and physical effects increases or decreases total ecosystem carbon depending on local conditions. Third, with a 4°C temperature increase, some forests transition from undergoing succession to needleleaf forests to recruiting multiple cohorts of broadleaf trees, decreasing total ecosystem carbon by ~40% after 300 years. However, the presence of a thick soil organic layer due to a persistently mild fire regime can prevent this transition and mediate carbon losses even under warmer temperatures. Fourth, nitrogen availability regulates successional dynamics; broadleaf species are less competitive with needleleaf trees under low nitrogen regimes. Fifth, the boreal forest shows additional short-term capacity for carbon sequestration as atmospheric CO2 increases. © 2016. The Authors.},
affiliation = {Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; Forest Research Institute, NSERC-UQAT-UQAM Industrial Chair in Sustainable Forest Management, Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, QC, Canada; Centre d'études sur la forêt, Université du Québec a Montréal, Montréal, QC, Canada; Department of Geosciences, Princeton University, Princeton, NJ, United States; Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, United States},
author_keywords = {boreal forest; carbon cycle; climate sensitivity; dynamic vegetation model; fire disturbance; soil organic layer},
document_type = {Article},
doi = {10.1002/2015MS000576},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981516279&doi=10.1002%2f2015MS000576&partnerID=40&md5=501b72595261ab651ae86537c6be3c5a},
}
@Article{BarbeFentonBergeron2017b,
author = {Barbe, M. and Fenton, N.J. and Bergeron, Y.},
title = {Boreal bryophyte response to natural fire edge creation},
journal = {Journal of Vegetation Science},
year = {2017},
volume = {28},
number = {5},
pages = {915-927},
note = {cited By 0},
abstract = {Question: Changes in species richness and composition in plant communities as a result of edge creation are well documented in anthropogenically modified landscapes, but what happens after natural disturbance? We investigate the responses of boreal bryophytes to edge creation in a post-wildfire residual forest patch system. Location: Boreal black spruce–feather moss forest, western Québec, Canada. Methods: Bryophyte community was sampled in 50-m2 plots: 117 plots in 39 undisturbed forest cores (control) and 108 plots in 30 residual forest patches from wildfire, divided into 48 core plots, 30 north-facing edge plots and 30 south-facing edge plots. Temporal, severity, spatial and structural characteristics of the stands were also recorded to explain bryophyte community composition. Results: Residual edges and cores were more species-rich than undisturbed cores, particularly north-facing edges, but community composition differed between undisturbed and residual cores. Indicator species of undisturbed cores and residual edges differed in their species traits. Spatial variables explained variations in composition, with a larger difference between core and edge communities in patches over 3 ha compared to smaller patches. Conclusion: We observed community composition change in response to natural edge creation. While edge influence is reduced in large patches, the bryophyte community remains distinct from undisturbed cores. This community change is a ‘control’ in studies of boreal bryophyte response to anthropogenic edge creation, and suggests that we should consider the natural range of variability. Finally, this study emphasizes that forest remnants do not substitute for continuous and undisturbed forests. © 2017 International Association for Vegetation Science},
affiliation = {Institut de recherche sur les forêts, Université du Québec en Abitibi-Témiscamingue, 445 Boul. de l'Université, Rouyn-Noranda, QC, Canada},
author_keywords = {Black spruce forest; Edge influence; Fragmentation; Liverwort; Moss; Species traits; Sphagna; Wildfire},
document_type = {Article},
doi = {10.1111/jvs.12552},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85023739346&doi=10.1111%2fjvs.12552&partnerID=40&md5=ef81c455018cdad6c0329a23c8630866},
}
@Article{NorrisKraichakRiskEtAl2017,
Title = {On the diversity and richness of understory bryophytes at Nectandra Cloud Forest Reserve, Costa Rica},
Author = {Norris, D. and Kraichak, E. and Risk, A. and Lucas, D. and Allard, D. and Rosengren, F. and Clark, T. and Fenton, N.J. and Tessler, M. and Phephu, N. and Lennette, E.},
Journal = {Biodiversity Data Journal},
Year = {2017},
Number = {1},
Pages = {e11778},
Volume = {5},
Abstract = {A survey of the understory bryophytes in the Nectandra Cloud Forest Preserve yielded 1083 specimens distributed among 55 families, represented by 74 genera of mosses, 75 genera of liverworts and 3 of hornworts. We studied and analyzed the bryophytic distribution on six types of substrates: 1) corticolous, 2) epiphyllous, 3) saxicolous, 4) terricolous, 5) aquatic and 6) lignicolous. The richness and composition of bryophyte genera are compared to those of other previous bryophyte surveys from 4 other sites with different oceanic exposures, climatic and geographic conditions in Costa Rica.},
Doi = {10.3897/BDJ.5.e11778},
Eprint = {https://doi.org/10.3897/BDJ.5.e11778},
ISSN = {1314-2836},
Owner = {DanielLesieur},
Publisher = {Pensoft Publishers},
Timestamp = {2017.07.04},
Url = {https://doi.org/10.3897/BDJ.5.e11778}
}
@Article{BarbeFentonBergeron2017a,
Title = {Are post-fire residual forest patches refugia for boreal bryophyte species? Implications for ecosystem based management and conservation},
Author = {Barbe, M. and Fenton, N.J. and Bergeron, Y.},
Journal = {Biodiversity and Conservation},
Year = {2017},
Month = {Apr},
Number = {4},
Pages = {943--965},
Volume = {26},
Abstract = {Residual patches of forest remaining after natural or anthropogenic disturbance may facilitate regeneration of fragmented forest. However, residual patch function remains unclear, especially after natural wildfire. We investigate the role of residual boreal forest patches as refugia for bryophytes and ask the question, do they house bryophyte communities similar to those encountered in undisturbed forests? Bryophytes were sampled in three habitat types in black spruce boreal forests illustrating a gradient of disturbance severity: undisturbed forests, residual patches and burned matrices. Temporal, disturbance severity, spatial and structural variables of habitats were also recorded. Bryophyte community composition differed among habitat types with residual patches characterized by higher species richness, the loss of forest specialists and the addition of disturbance-prone species. The bryophyte community found in residual patches is at the interface between the communities of undisturbed forests and burned matrices. As residual patches did not conserve all species, particularly forest specialists, they were not refugia. However, we identify temporal, spatial and structural characteristics that can maintain bryophyte communities most similar to undisturbed forests and enhance residual patch ``refugia potential''. Residual patches enhance bryophyte diversity of the landscape housing species that cannot survive in the burned matrix. As conclusion we discuss the use of retention patches in harvested stands, together with the preservation of undisturbed stands that house singular bryophyte communities and especially sensitive forest specialists.},
Day = {01},
Doi = {10.1007/s10531-016-1281-9},
ISSN = {1572-9710},
Owner = {DanielLesieur},
Timestamp = {2017.07.04},
Url = {http://dx.doi.org/10.1007/s10531-016-1281-9}
}
@PhdThesis{Moussaoui2017,
Title = {Dynamique et structure des îlots résiduels après feu et après coupe en pessière à mousses de l’ouest du Québec.},
Author = {Moussaoui, L.},
School = {Université du Québec en Abitibi-Témiscamingue},
Year = {2017},
Month = {Mars},
Note = {CEFTMS, Bergeron, Y. and Fenton, N.J. and Leduc, A.},
Abstract = {La préoccupation de la préservation des forêts et de l’avenir de la foresterie s’est traduite par l’essor de nombreux projets de loi et certifications axés sur la gestion durable des forêts. Il s’agit de comprendre les mécanismes et dynamiques de perturbations naturelles afin de minimiser les écarts entre paysage naturels et paysages aménagés. La rétention des attributs structuraux (arbres vivants et morts, débris ligneux) à l’intérieur des zones aménagées est l’outil privilégié au Québec à cet effet. Toutefois, les modalités de rétention n’y sont pas encore bien définies et celles déjà existantes (bouquets, séparateurs) ou à l’essai (îlots) génèrent des peuplements de taille et de volume relativement arbitraires. Dans l’optique d’aménagement forestier écosystémique, l’objectif principal de cette thèse était d’évaluer le succès des coupes à rétention verte en pessière noire et de documenter la dynamique post-perturbation des îlots résiduels issus de feu et d’îlots de rétention créés par les traitements sylvicoles.
Trois types de peuplements en pessière à mousses ont été étudiés, soit, 41 placettes provenant d’îlots résiduels post-feu, 45 placettes de rétentions post-coupe et 37 placettes provenant de forêts continues (témoins). Les îlots résiduels post-feu et post-coupe ont été considérés selon leur temps d’exposition à la matrice perturbée comme jeunes (< 20 ans), ou vieux (≥ 20 ans). Les conditions forestières (diamètre, hauteur et volume des arbres et des chicots, volume de bois mort au sol, densité de régénération et des gaules, épaisseur de la matière organique, superficie et âge du peuplement) de chaque site à l’intérieur et en lisière ont été échantillonnées. Les peuplements ont été datés soit par une approche dendrochronologique ou au Carbone 14.
Le premier chapitre consistait à évaluer l’abondance post-perturbation du bois mort récent des îlots résiduels post-feu et de rétention post-coupe en fonction du volume de bois initial et à comparer leur dynamique temporelle. Les îlots résiduels post-feu ayant un volume de bois initial supérieur à 60 m3ha-1 génèrent du bois mort d’une façon soutenable. Parfois, bien que les îlots résiduels post-feu apparaissent durables à moyen terme, leurs faibles volumes de bois sur pied fait en sorte qu’ils génèrent très peu de bois mort. En contexte aménagé, les grands îlots de rétention et les séparateurs secs avaient, généralement, une dynamique de recrutement de bois mort semblable à celle d’îlot post-feu. Toutefois, les bouquets figuraient parmi les îlots de rétention des plus vulnérables à l’écroulement même s’ils étaient peu volumétriques en raison de leur petite taille. Afin d’augmenter la durée de vie post-coupe d’îlots de rétention, nous recommandons la sélection de parcelles de forêts à fort volume de bois (entre 60 et 300 m3ha-1) et de grandes superficies, sous la forme d’îlot ou de séparateur.
Le deuxième chapitre consistait en une classification des structures d’îlots résiduels post-feu et post-coupe en faisant le lien avec l’abondance du bois mort. Notre approche de classification structurale, basée sur l’analyse de la distribution de la taille des tiges marchandes, a permis d’identifier six types structuraux distincts. Les structures diamétrales en j-inversé (type 1) et unimodale tronquée (type 2) caractérisaient les peuplements dominés par le petit bois. À l’opposé, les peuplements de type 6 avaient une structure irrégulière et principalement composée de gros bois. La comparaison des types structuraux entre les îlots résiduels post-feu et post-coupe ont montré que généralement, les rétentions de coupe maintenaient bien la variété structurale naturelle observée dans les îlots de feu et la forêt continue. Toutefois, même si les peuplements de types 1 et 2 étaient présents dans les peuplements naturels, seuls les peuplements de types 3 à 6 comportaient d’une part, du bois moyen et gros longtemps après coupe et d’autre part, garantissaient le recrutement de nouvelles tiges marchandes. Afin d’éviter la simplification de la structure, nous recommandons que les îlots de rétention soient intentionnellement orientés vers les types dominés par des arbres intermédiaires et grands.
Le troisième chapitre a abordé la notion d’effet de lisière. En quoi les îlots créés par l’homme y seraient plus exposés que les îlots post-feu ? Les effets de lisière sur les attributs structuraux d’îlots résiduels post-feu et post-coupe apparaissaient, en général, similaires et dans les deux cas, ces effets dépendaient surtout des conditions initiales pré-perturbation de l’îlot résiduel et de leur temps d'exposition à la matrice perturbée environnante. Les résultats de ce chapitre suggèrent que les trois facteurs, un volume initial en bois marchand faible, l’écroulement de la lisière et la régénération du parterre de coupe, pourraient expliquer les faibles effets de lisières sur les attributs structuraux d’îlots résiduels présents au moment de l'échantillonnage. Un faible volume initial en bois marchand pourrait expliquer les faibles effets de lisières sur les attributs structuraux d’îlots résiduels. Certaines rétentions de coupe sous la forme de bouquet, en raison de leur petite taille et de leur fort volume de bois initial, se sont en partie écroulées. Nous recommandons donc la rétention de grands îlots de forêt fermée dans le parterre de coupe ce qui permettrait aux effets de lisière de se stabiliser avant d’atteindre leur centre tout en continuant d’assurer, à moyen et long terme, le recrutement de bois mort et d’arbres vivants.
À l’issue de cette thèse, nous démontrons l’influence de la structure initiale des peuplements ayant subi les feux et les coupes sur leur dynamique post-perturbation. Les conclusions soulèvent l’importance d’utiliser les îlots résiduels post-feu comme outils dans les stratégies d’aménagement écosystémique puisqu’ils maintiennent la variabilité structurelle portée par la forêt continue. En forêt boréale aménagée, maintenir une variabilité structurelle comparable à celle rencontrée en forêt naturelle est susceptible de jouer un rôle dans la régénération des parterres de coupe et dans la préservation des espèces forestières.},
Owner = {Daniel Lesieur},
Timestamp = {2017.04.25}
}
@Article{BarbeChavelFentonEtAl2016,
Title = {Dispersal of bryophytes and ferns is facilitated by small mammals in the boreal forest},
Author = {Barbe, M. and Chavel, E.E. and Fenton, N.J. and Imbeau, L. and Mazerolle, M.J. and Drapeau, P. and Bergeron, Y.},
Journal = {Ecoscience},
Year = {2016},
Number = {3-4},
Pages = {67-76},
Volume = {23},
Abstract = {Bryophytes and pteridophytes are important contributors to ecosystem services in boreal regions. Abiotic agents are considered their main dispersers, but recent studies suggest that biotic agents including invertebrates, birds and large mammals might also be efficient dispersal agents. Dispersal of cryptogams by ground-dwelling small mammals is often assumed to occur, but has yet to be demonstrated. In this study, we present the first evidence of boreal cryptogam species being dispersed by ground-dwelling small mammals. In 2013 and 2014, we recorded bryophyte cover and fern presence in 35 sites in black spruce forest. We also collected diaspores by brushing the fur of 99 ground-dwelling small mammals live-trapped in the same sites. Diaspores were then germinated on nutrient agar for six months. Viable diaspores of five bryophyte species and one fern species were successfully grown. No association was found between the cryptogam community sampled on site and the diaspore community grown on artificial substrate. Unlike abiotic agents that randomly disperse cryptogams, small mammals are more likely to transport diaspores to suitable substrates where microhabitat requirements for germination are met. Our results highlight the need to consider a broad spectrum of dispersal agents when focusing on the community dynamics of cryptogams.},
Doi = {10.1080/11956860.2016.1235917},
Eprint = {
http://dx.doi.org/10.1080/11956860.2016.1235917
},
Owner = {DanielLesieur},
Timestamp = {2017.04.18},
Url = {
http://dx.doi.org/10.1080/11956860.2016.1235917
} }
@Article{PaceFentonPareEtAl2017,
Title = {Ground-layer composition affects tree fine root biomass and soil nutrient availability in jack pine and black spruce forests under extreme drainage conditions},
Author = {Pace, M. and Fenton, N.J. and Pare, D. and Bergeron, Y.},
Journal = {Canadian Journal of Forest Research},
Year = {2017},
Number = {4},
Pages = {433-444},
Volume = {47},
Abstract = {En forêt boréale, l’ouverture prolongée du couvert forestier favorise un couvert de lichens sur les stations xériques et un couvert de sphaignes sur les stations hydriques à subhydriques. Nous posons l’hypothèse que la composition de la strate des mousses et lichens joue un rôle dans le maintien de clairières ouvertes par ses effets sur la biomasse de racines fines (diamètre ≤ 2 mm) et la disponibilité des nutriments dans le sol. Nous avons analysé et décomposé les relations entre l’ouverture de la canopée, la composition de la strate de végétation basse, la biomasse de racines fines des arbres et les nutriments du sol à l’aide d’une analyse de pistes le long de gradients d’ouverture du couvert en pinède (Pinus banksiana Lamb.) à lichens et en pessière (Picea mariana (Mill.) B.S.P.) à mousses. Les effets de l’enlèvement des lichens et des sphaignes sur la biomasse de racines fines des arbres et les nutriments du sol ont été testés in situ. Quoique la variation de la biomasse de racines fines des pins ait été principalement expliquée par la biomasse aérienne du peuplement, l’enlèvement des lichens a localement augmenté la biomasse de racines fines de plus de 50 %, ainsi que la disponibilité en potassium et en cations basiques extraits de résine de respectivement 580 % et 180 %. Bien que le couvert de sphaignes ait été identifié comme un facteur clé de la réduction de la biomasse aérienne des peuplements établis sur les stations forestières paludifiées, son enlèvement n’a pas eu d’effet à court terme sur la biomasse de racines fines des épinettes ni sur le contenu en nutriments du sol. Nos résultats indiquent que les lichens, plus que les sphaignes, influencent la croissance des arbres en ayant des effets directs sur les nutriments du sol. Le maintien de peuplements forestiers productifs sur ces deux types de station nécessite des solutions sylvicoles différentes.},
Doi = {10.1139/cjfr-2016-0352},
Eprint = {
http://dx.doi.org/10.1139/cjfr-2016-0352
},
Owner = {DanielLesieur},
Timestamp = {2017.04.11},
Url = {
http://dx.doi.org/10.1139/cjfr-2016-0352
} }
@PhdThesis{Barbe2016,
Title = {Dynamique des communautés bryophytiques en pessière noire à mousses de l’ouest du Québec : rôles des îlots résiduels post-feu.},
Author = {Barbe, M.},
School = {Université du Québec en Abitibi-Témiscamingue},
Year = {2016},
Month = {Octobre},
Note = {CEFTMS, Bergeron, Y. and Fenton, N.J.},
Abstract = {La conscientisation aux problématiques environnementales survenue il y a une trentaine d’années a engagé une refonte de la foresterie. Il s’agit alors de s’inspirer des patrons écologiques issus de la dynamique forestière naturelle. Sous l’égide de l’aménagement écosystémique, l’objectif principal de cette thèse est de rendre compte du rôle des îlots résiduels post-feu et des caractéristiques qui soutiennent ces rôles, dans la dynamique des communautés bryophytiques. Conjointement, nous ambitionnons d’améliorer les connaissances sur la dynamique des bryophytes en forêt boréale nord-américaine.
Les bryophytes furent échantillonnnées dans trois types de peuplement illustrant un gradient de sévérité de perturbation : forêts non perturbées témoins (données de C. Chaieb), îlots résiduels post-feu et matrices brûlées. La variété des microhabitats en bordure des îlots résiduels expliquerait leurs richesses en bryophytes. En revanche, l’absence de plusieurs espèces forestières sensibles aux perturbations ne permet pas de définir les îlots résiduels comme des refuges i.e., habitats aux caractéristiques environnementales et à la composition en espèces similaires à celle des forêts non perturbées. Cependant, les îlots résiduels de plus de 56 ans et 0.20 ha et de complexité structurelle modérée arboraient une communauté bryophytique plus similaire à celle des forêts non perturbées qu’à celles des matrices brûlées. La stratégie gagnante pour optimiser la richesse en bryophytes et maintenir les espèces sensibles consiste à imiter ces caractéristiques dans les îlots de rétention tout en conservant des peuplements forestiers non perturbés.
Dans les mêmes trois types de peuplements, en divisant les îlots résiduels en habitats de coeur (forêt à l’intérieur de l’îlot) et de bordure (zone de transition entre la matrice brûlée et le coeur de l’îlot), nous avons mis en évidence la réponse des bryophytes à l’effet de bordure. L’hypothèse comme quoi les vieux et larges îlots résiduels abriteraient des communautés plus similaires à celles des forêts non perturbées en raison de la moindre pénétration de l’effet de bordure à l’intérieur du peuplement est rejetée. Les îlots résiduels, même de 3 à 11 ha, étaient dépourvus de coeur. Ce changement de communauté face à la création de bordures est naturel, ouvrant à la discussion quant à l’interprétation de la réponse des espèces à la création de bordures anthropiques.
En comparant la communauté bryophytique des îlots résiduels et des matrices brûlées aux espèces présentes dans la pluie de propagules aériennes interceptées dans les mêmes habitats, nous avons démontré leur non-concordance. La faible similarité entre ces communautés était expliquée par la prépondérance du transport à longue distance des propagules. Ce résultat suggère que les îlots résiduels, comme sources de propagules potentielles, ont une influence sur la recolonisation de la matrice brûlée à l’échelle locale, mais surtout régionale. Nous insistons donc sur la nécessité de penser l’aménagement forestier à l’échelle régionale, et rapportons l’occurrence d’un processus controversé chez les bryophytes : la dispersion à longue distance.
La dépendance accrue des bryophytes aux conditions environnementales est un fait avéré. Pourrait-elle expliquer les patrons interannuel et intersaisonnier des pluies de propagules aériennes interceptées en pessière noire ? Oui, et la dispersion des propagules serait impactée par les conditions environnementales (principalement la température, l’humidité et la durée de l’hiver) concomitantes au relargage des propagules, mais aussi en amont de la libération des propagules (durant les phases de fertilisation et de croissance/maturation du gamétophyte). Cette étude préliminaire et ponctuelle recquiert d’être complémentée par des études à plus long terme. Cependant, elle représente une avancée considérable dans la compréhension des patrons de dispersion des espèces, sujet de première importance dans le contexte des changements globaux.
Pour poursuivre, nous avons étudié le recours, par les bryophytes, à des agents biotiques de dispersion. Le brossage de micromammifères capturés en pessière noire a permis de démontrer que 50 % d’entre eux transportaient des propagules viables de bryophytes. La dynamique métapopulationnelle des bryophytes est assurée par cette interaction journalière avec les micromammifères, qui contribueraient à la dispersion d’une quantité substantielle de propagules.
Nous concluons en actualisant la Flore des bryophytes du Québec-Labrador et en redessinant l’aire de répartition de 35 bryophytes, dont 20 nouvelles pour notre région d’étude. L’extension de l’aire de répartition de ces espèces renvoie à la nécessité de poursuivre les campagnes d’échantillonnages bryologiques, d’autant plus dans des endroits riches d’une bryoflore aussi remarquable que la pessière noire, où chercher une mousse revient un peu, avouons-le, à chercher une aiguille dans une botte de foin !
À l’issue de cette thèse, nous soulignons le bénéfice d’étudier les bryophytes afin de s’inspirer des patrons de perturbations naturelles et de mitiger les impacts délétères des coupes forestières sur l’écosystème. Un soin particulier quant à la conception des îlots résiduels à l’échelle locale, mais aussi quant à leur agencement à l’échelle du paysage est requis pour conserver une bryo-diversité maximale. Ces conclusions soulèvent, de plus, l’impérieuse nécessité de préserver des peuplements forestiers âgés et continus pour conserver les espèces sensibles aux perturbations et à haut risque d’extirpation. Maintenir la bryoflore en forêt boréale exploitée est le prérequis indispensable à la régénération optimale des peuplements et à la résilience de cet écosystème, patrimoine naturel des plus remarquable de l’Amérique du Nord.},
Owner = {Daniel Lesieur},
Timestamp = {2017.01.11}
}
@Article{Fenton2016,
author = {Fenton, N.J.},
title = {Introduction to "bryophytes and graminoids: Key roles in restoring boreal wetlands and forests"},
journal = {Botany},
year = {2016},
volume = {94},
number = {11},
pages = {v},
note = {cited By 0},
document_type = {Editorial},
doi = {10.1139/cjb-2016-0178},
keywords = {bryophytes},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994409138&partnerID=40&md5=fa4326f8851e57e6666fa66cc4d6b5bb},
}
@Article{Fenton2016,
author = {Fenton, N.J.},
title = {Applied ecology in Canada's Boreal: A holistic view of the mitigation hierarchy and resilience theory},
journal = {Botany},
year = {2016},
volume = {94},
number = {11},
pages = {1009-1014},
note = {cited By 0},
abstract = {Canada’s boreal biome is a mosaic of forests and peatlands. These ecosystems have developed dynamically, periodically affected by disturbance events of significant spatial extent and variable severity, reducing ecosystem biomass. The same ecosystem types typically regenerate from biological legacies. However, concern is growing about the impact of these different anthropogenic disturbances, particularly compound disturbances including climate change, which open the door to shifts to alternate stable states. One strategy promoted to regulate anthropogenic disturbance is the “mitigation hierarchy”� for development projects, where impacts on ecosystems are avoided, mitigated, restored, or compensated. This practical approach is not yet integrated into disturbance and resilience theory. Here, I develop an integrated view of the mitigation hierarchy, as well as resilience and disturbance theory, in a boreal context using ecosystem services to measure ecosystem state in a two-step process that first models loss of ecosystem function and then integrates the mitigation hierarchy and resilience theory. The application of this model is discussed in the context of restoration studies after different types of catastrophic anthropogenic disturbance. These studies, some of which are published in this special issue, highlight the important role of bryophytes and understory plants in setting restoration targets and developing criteria and indicators of success. © 2016, Canadian Science Publishing. All rights reserved.},
author_keywords = {Anthropogenic disturbance; Boreal forests; Boreal peatlands; Restoration},
document_type = {Article},
doi = {10.1139/cjb-2016-0123},
keywords = {bryophytes},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994441838&partnerID=40&md5=22ca80dcc37257f77e5b8339900cd030},
}
@Article{MoussaouiFentonLeducEtAl2016,
author = {Moussaoui, L. and Fenton, N.J. and Leduc, A. and Bergeron, Y.},
title = {Can retention harvest maintain natural structural complexity? A comparison of post-harvest and post-fire residual patches in boreal forest},
journal = {Forests},
year = {2016},
volume = {7},
number = {10},
note = {cited By 0},
abstract = {Variable retention harvest promotes biodiversity conservation in managed boreal forests by ensuring forest continuity and structural complexity. However, do post-harvest and post-fire patches maintain the same structural complexity? This study compares post-harvest and post-fire residual patches and proposes retention modalities that can maintain the same structural complexity as in natural forests, here considering both continuous forest stands and post-fire residual patches. In boreal black spruce forests, 41 post-fire residual patches, and 45 post-harvest retention patches of varying size and ages (exposure time to disturbed matrix) and 37 continuous forest stands were classified into six diameter structure types. Types 1 (inverted-J) and 2 (trunked-unimodal) characterized stands dominated by small trees. The abundance of small trees decreased and the abundance of large trees increased from Type 1 to Type 6. Type 6 had the most irregular structure with a wide range of diameters. This study indicates that: (1) old post-harvest residual retentions maintained the range of structural complexity found in natural stands; (2) Types 1 and 2 were generally associated with young post-fire patches and post-harvest retention clumps; (3) the structure of residual patches containing only small trees was usually younger (in terms of the age of the original forest from which residual patches were formed) than those with larger trees. To avoid the risk of simplifying the structure, retention patches should be intentionally oriented towards Types 3-6, dominated by intermediate and large trees. © 2016 by the authors.},
art_number = {243},
author_keywords = {Black spruce-feathermoss forest; Continuous forest; Diameter structure; Disturbance; Ecosystem based management; Structural attributes},
document_type = {Article},
doi = {10.3390/f7100243},
keywords = {Biodiversity; Conservation; Ecosystems; Fires; Harvesting, Black spruce; Continuous forest; Disturbance; Ecosystem-based management; Structural attributes, Forestry, Picea mariana},
source = {Scopus},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994891057&partnerID=40&md5=ff7383661d8b02872fa29fe2f05e645a},
}
@Article{BarbeFentonBergeron2016,
Title = {So close and yet so far away: long-distance dispersal events govern bryophyte metacommunity reassembly},
Author = {Barbé, M. and Fenton, N.J. and Bergeron, Y.},
Journal = {Journal of Ecology},
Year = {2016},
Number = {6},
Pages = {1707-1719},
Volume = {104},
Doi = {10.1111/1365-2745.12637},
ISSN = {1365-2745},
Keywords = {bryophyte, geographic distance, inverse isolation hypothesis, life strategies, local dispersal, metapopulation theory, propagule cloud, regional dispersal},
Owner = {DanielLesieur},
Timestamp = {2016.10.21},
Url = {http://dx.doi.org/10.1111/1365-2745.12637}
}
@MastersThesis{Castonguay2016,
Title = {Dynamique des communautés de bryophytes dans la pessière à mousses de la forêt boréale: rôle des îlots de rétention après coupe.},
Author = {Castonguay, J.},
School = {Université du Québec en Abitibi-Témiscamingue},
Year = {2016},
Month = {August},
Note = {CEFTMS, Bergeron, Y. and Fenton, N.J.},
Abstract = {En forêt boréale, dans la pessière à mousse de l’ouest du Québec, les feux laissent des îlots intacts après leur passage. Le principal objectif de cette étude est de déterminer quel rôle joue la rétention après coupe, dans un contexte d’aménagement forestier écosystémique, sur la dynamique des communautés de bryophytes et de déterminer les facteurs influençant la capacité des îlots de rétention après coupe à remplir la fonction écologique de refuge. La première hypothèse émise est que les îlots de grande taille devraient être plus efficaces pour servir de refuge. La seconde hypothèse est que le temps depuis la coupe devrait influencer négativement la population d’origine. La troisième hypothèse est qu’il existe un changement graduel de composition de l’îlot de rétention vers la matrice de coupe et que ce changement est plus marqué pour les grands îlots que les petits. Pour répondre aux hypothèses, un dispositif de 195 placettes de 50 m² a été inventorié selon la technique d’inventaire floristique par habitat dans des coupes de différents types de taille et d’âge depuis la coupe.
En général, les résultats démontrent une différence en recouvrement, composition et richesse selon la taille de l’îlot de rétention et le temps depuis coupe. On retrouve un fort recouvrement de Pleurozium schreberi dans les grands îlots de rétention et dans des parterres de coupe plus vieux. Aussi, on remarque un changement en composition de bryophytes : de mousses dans les petits îlots de rétention vers un mélange d’hépatiques, de mousses et de sphaignes dans les grands îlots de rétention. Ce changement en composition est aussi remarqué en fonction du temps depuis la coupe. La richesse en bryophyte est plus importante dans les vieux parterres de coupe que dans les jeunes. De plus, on remarque une différence en richesse de bryophytes entre le centre de l’îlot de rétention et les placettes de la matrice de coupe, mais les résultats ne démontrent pas de gradient. En somme, le maintien de longs cycles de coupe permet de préserver une flore importante de la forêt boréale.},
Keywords = {coupe à rétention variable, îlots résiduels, fonctions écologiques, bryophytes et perturbation},
Owner = {Daniel Lesieur},
Timestamp = {2016.08.31}
}
@ARTICLE{MoroniMorrisShawEtAl2015,
author = {Moroni, M.T. and Morris, D.M. and Shaw, C. and Stokland, J.N.
and Harmon, M.E. and Fenton, N.J. and Merganičová, K. and Merganič,
J. and Okabe, K. and Hagemann, U.},
title = {Buried Wood: A Common Yet Poorly Documented Form of Deadwood},
journal = {Ecosystems},
year = {2015},
volume = {18},
pages = {605--628},
number = {4},
abstract = {Buried wood (BW: downed deadwood buried more than 50% by soil, litter,
or ground vegetation) is a common but understudied part of forest
ecosystems. We reviewed the literature and conducted a meta-analysis
of BW that included new data from Australia, Belarus, Canada, Germany,
Japan, Norway, Russia, Slovakia, Sweden, the USA, and Wales. Buried
wood occurred in a wide range of forest types of natural and anthropogenic
origin. In some forests, BW was effectively preserved and volumes
of BW exceeded the volume of all other live and deadwood combined.
Boreal and oroboreal coniferous forests contained large amounts of
BW, whereas hardwood forests appeared to contain little BW due to
differences in ground vegetation, wood decomposition pathways, and
climatic and edaphic conditions. Coniferous forests growing on paludified
ground represent areas with a large capacity to store BW. The largest
quantity of BW reported was 935 m3 ha−1 in paludified black spruce
(Picea mariana (Mill.)) forests, where typically mature live bole
volumes are only 150 m3 ha−1. Buried wood can accumulate over several
disturbance cycles (centuries), due to greatly reduced rates of decomposition
following burial. As such, BW can represent a large forest C pool
that is currently not recognized in forest C accounting using field
measurements or models. Failing to account for wood burial can lead
to underestimates of ecosystem deadwood stocks as well as misinterpretations
of ecosystem dynamics. Buried wood and the burial process should
be included in forest measurement and models, particularly for boreal
and oroboreal ecosystems, to reduce uncertainty and improve accuracy
in forest C accounting. This will require improvements to existing
field sampling protocols and collection of long-term data on processes
creating BW.},
doi = {10.1007/s10021-015-9850-4},
issn = {1435-0629},
owner = {nafon9},
timestamp = {2016.07.13},
url = {http://dx.doi.org/10.1007/s10021-015-9850-4}
}
@ARTICLE{BarbeFentonLavergneEtAl2015,
author = {Barbé, M. and Fenton, N.J. and Lavergne, C. and Le Péchon, T. and
Baider, C. and Gigord, L.D.B.},
title = {Changes in lowland dry-forest native and alien plant communities
on Réunion Island (Indian Ocean) over 16 years},
journal = {Botany},
year = {2015},
volume = {93},
pages = {843-857},
number = {12},
abstract = {Les flores indigènes insulaires sont parmi les plus menacées du monde.
À La Réunion par exemple, seulement 1 % des écosystèmes de forêt
semi-sèche de basse altitude perdure alors que ces forêts abritent
de nombreuses espèces endémiques et en danger d’extinction. Ces écosystèmes
sont particulièrement soumis aux invasions répétées par des espèces
exotiques; favorisant, au cours du temps, une augmentation des espèces
exotiques au détriment des espèces indigènes. Nous testons cette
hypothèse via l’étude des changements floristiques sur une période
de 16 ans (de 1995 à 2011) dans les communautés végétales de six
fragments de forêt semi-sèche. La richesse spécifique et l’abondance
des espèces exotiques et indigènes augmentent au cours de ces 16
années mais avec un taux significativement plus important pour les
espèces exotiques envahissantes. Malgré ceci, l’indice de similarité
de Jaccard indique un haut niveau de similarité entre les communautés
de 1995 et de 2011. De plus, l’unique site bénéficiant d’un programme
de lutte contre les espèces exotiques est aussi celui où l’augmentation
du nombre et de l’abondance des espèces indigènes sont les plus importants.
Cette étude souligne l’importance de recourir à des parcelles d’échantillonnages
permanentes pour comprendre les dynamiques des communautés envahies
et les successions végétales. Elle indique aussi une potentielle
persistance temporelle des communautés végétales insulaires de forêt
semi-sèche malgré l’expansion des espèces exotiques. Pour finir,
elle suggère de nouvelles voies de développement dans la succession
secondaire lorsque les espèces indigènes et exotiques sont amenées
à coexister.},
doi = {10.1139/cjb-2015-0112},
eprint = { http://dx.doi.org/10.1139/cjb-2015-0112 },
owner = {nafon9},
timestamp = {2016.07.13},
url = { http://dx.doi.org/10.1139/cjb-2015-0112
} }
@ARTICLE{LafleurRenardLeroyEtAl2016,
author = {Lafleur, B. and Renard, S.M. and Leroy, C. and Fenton, N.J. and Simard,
M. and Gauthier, S. and Pare, D. and Leduc, A. and Thiffault, N.
and Bergeron, Y.},
title = {Silviculture to sustain productivity in black spruce paludified forests},
journal = {Forest Ecology and Management},
year = {2016},
volume = {375},
pages = {172-181},
abstract = {Fire is considered the major disturbance in boreal forests. Nonetheless,
in several areas logging has
become the primary driver of forest dynamics. In many areas of the
boreal forest, stands may undergo
paludification (i.e. the accumulation of thick, poorly decomposed
organic layers over the mineral soil)
in the prolonged absence of fire, which reduces forest productivity.
Whereas high-severity fires (HSF)
may restore forest productivity by burning the soil organic layer
(SOL), low-severity fires (LSF) mainly
burn the soil surface and do not significantly reduce SOL thickness.
In the Clay Belt region of eastern
Canada, an area prone to paludification, forest stands have historically
been harvested by clearcutting
(CC), but concerns about the protection of soils and tree regeneration
lead to the replacement of CC by
careful logging (CL). Whereas CC disturbs the SOL and is thought to
favor tree growth, CL has little impact
on the SOL. Furthermore, it has been suggested that prescribed burning
after clearcut (CCPB) could also be
used to control paludification. Using a retrospective approach, this
study sought to understand how CC,
CL, and CCPB compare to LSF and HSF with respect to soil properties,
SOL thickness, vegetation ground
cover, tree nutrition, and stand height in paludified black spruce
stands of the Clay Belt region. HSF
led to significantly taller trees than CL and LSF, but did not differ
from CC and CCPB. Foliar N was significantly
higher in HSF and CCPB sites relative to CL and LSF, with an intermediate
value in CC sites. Ground
cover of Rhododendron groenlandicum was significantly lower in HSF
and CC sites relative to LSF, with
intermediate values in CL and CCPB sites. Sphagnum spp. ground cover
was significantly lower in HSF
and CCPB sites relative to CL, with intermediate values in CC and
LSF sites. High-severity fire sites had
a significantly thinner SOL than the four other disturbances. Finally,
regression tree analysis showed that
SOL thickness represented the best predictor of tree height, whereas
segmented regression showed that
tree height was negatively correlated to SOL thickness and revealed
a cut-off point circa 23 cm, which
suggests that tree growth is impeded beyond this threshold. These
results support the idea that management
strategies intending to regenerate paludified forests should primarily
aim at reducing organic layer
thickness, either through mechanical disturbance or combustion.},
owner = {Luc},
timestamp = {2016.06.03},
url = {ttp://dx.doi.org/10.1016/j.foreco.2016.05.037}
}
@Article{FaivreBoudreaultRenardEtAl2016,
Title = {Prescribed burning of harvested boreal black spruce forests in eastern Canada: effect on understory vegetation},
Author = {Faivre, N. and Boudreault, C. and Renard, S.M. and Fenton, N.J. and Gauthier, S. and Bergeron, Y.},
Journal = {Canadian Journal of Forest Research},
Year = {2016},
Number = {0},
Pages = {876-884},
Volume = {46},
Abstract = {Les stratégies d’aménagement forestier écosystémique préconisent d’imiter les effets des perturbations naturelles pour atténuer l’impact de traitements sylvicoles à l’échelle du paysage. Cette étude compare les effets de coupe totale suivie de brûlage dirigé (CCPB) avec ceux de coupe totale (CC) et de pratique sylvicole appliquée limitant la perturbation du sol (CLAAG : « careful logging around advanced growth ») sur la composition des espèces de sous-bois, au sein de peuplements d’épinette noire (Picea mariana Miller (BSP)) touchés par la paludification. Les analyses, effectuées à l’échelle de la placette, du site et du traitement ont permis via l’analyse des taxons et des types fonctionnels d’examiner les effets respectifs de chaque traitement. Des différences de composition significatives parmi les espèces vasculaires et non-vasculaires ont été observées à l’échelle de la placette selon le type de traitement considéré. Nous avons constaté que les espèces pionnières étaient associées aux sites CCPB tandis que les espèces de fin de succession étaient caractéristiques des sites CC. Une richesse spécifique plus élevée a été observée parmi les sites CLAAG que dans les sites CCPB et CC. Nous avons par ailleurs trouvé que les traitements CCPB étaient davantage enclin à promouvoir des patrons de composition d’espèces vasculaires similaires à ceux observés après des perturbations naturelles comme les feux de forêt. Nous avons également constaté une abondance relative plus faible des espèces de sphaigne, responsable du phénomène de paludification, au sein des sites traités par brûlage dirigé. Les résultats de cette étude suggèrent ainsi que le brûlage dirigé représente une alternative durable aux pratiques sylvicoles actuelles en permettant de conserver la biodiversité (en termes d’assemblages d’espèces) et de maintenir voire d’augmenter la productivité des peuplements exploités.},
Doi = {10.1139/cjfr-2015-0439},
Eprint = {
http://dx.doi.org/10.1139/cjfr-2015-0439
},
Owner = {DanielLesieur},
Timestamp = {2016.05.27},
Url = {
http://dx.doi.org/10.1139/cjfr-2015-0439
} }
@Article{LafleurZouaouiFentonEtAl2016,
Title = {Short-term response of Cladonia lichen communities to logging and fire in boreal forests},
Author = {Lafleur, B. and Zouaoui, S. and Fenton, N.J. and Drapeau, P. and Bergeron, Y.},
Journal = {Forest Ecology and Management},
Year = {2016},
Pages = {44 - 52},
Volume = {372},
Abstract = {Abstract Fire is the major disturbance agent in boreal forests that initiates forest regeneration and succession, and plays a major role in determining the composition of terricolous lichen communities. In recent decades however, logging has become an important disturbance agent in boreal forests. In this context, growing concerns about logging effects on endangered species such as woodland caribou (Rangifer tarandus caribou) has emerged and drawn attention on how reindeer lichens (i.e. Cladonia arbuscula, Cladonia mitis, Cladonia rangiferina, Cladonia stellaris, and Cladonia stygia) respond to logging and fire given their importance as winter forage for caribou. We compared critical lichen habitat factors (i.e., forest floor thickness, tree height, and canopy closure) between fire and logged sites and evaluated how Cladonia lichen species richness, biomass, and ground cover were related to these habitat factors in the first decades following disturbance. We found no significant differences in habitat factors and no significant differences in lichen species richness or ground cover between logged and fire sites. However, Cladonia lichen biomass was significantly higher following logging. These results support the hypothesis that Cladonia lichens can persist following logging and suggest that forestry practices that include in their toolbox winter harvesting or machinery traffic restricted to specific trails are likely to preserve undisturbed forest floor habitat conditions with source populations of lichens.},
Doi = {http://dx.doi.org/10.1016/j.foreco.2016.04.007},
ISSN = {0378-1127},
Keywords = {Anthropogenic disturbance},
Owner = {DanielLesieur},
Timestamp = {2016.04.11},
Url = {http://www.sciencedirect.com/science/article/pii/S0378112716301554}
}
@Article{MoussaouiFentonLeducEtAl2016,
Title = {Deadwood abundance in post-harvest and post-fire residual patches: An evaluation of patch temporal dynamics in black spruce boreal forest },
Author = {Moussaoui, L. and Fenton, N.J. and Leduc, A. and Bergeron, Y.},
Journal = {Forest Ecology and Management },
Year = {2016},
Pages = {17 - 27},
Volume = {368},
Abstract = {Abstract In managed boreal forests, variable retention harvest is considered by forest managers as a means of mitigating harvest impacts on biodiversity. Variable retention harvest consists of maintaining within a cutblock structural attributes of the original forest stand in intact forest patches that could provide quality habitat (i.e., with large trees and deadwood) for many forest species during forest regeneration. However, retention patch modalities (size, shape, age of the forest) allowing both persistence and sustainable recruitment of deadwood over time remains unknown. The objective of this study is to evaluate the abundance of recent deadwood in post-harvest and post-fire residual patches and to compare their temporal dynamics in black spruce dominated stands located in northwestern Quebec. Abundance of the recent deadwood, estimated as the sum of recent standing deadwood volume and recently fallen deadwood volume was analyzed in 41 post-fire residual patches, and in 45 post-harvest retention patches of varying ages (i.e. exposure time to the disturbed matrix) and in 37 continuous black spruce forest stands (controls). This study shows that post-fire residual patches appear in general more durable than post-harvest retention patches after disturbance. In a management context, our results indicate that: (1) large island patches and large linear separators oriented to escape windthrow usually have deadwood recruitment dynamics similar to that of post-fire patches; (2) retention patches with an initial stand volume greater than 60 m3/ha will generate more deadwood volume over time. This suggests that the selection of large retention patches in the shape of an island or a separator, with high volume (between 60 and 300 m3/ha) should help increase the persistence of post-harvest retention patches in black spruce forest, and simultaneously ensure quality habitat for several forest species while the adjacent managed forest regenerates.},
Doi = {http://dx.doi.org/10.1016/j.foreco.2016.03.012},
ISSN = {0378-1127},
Keywords = {Disturbance},
Owner = {DanielLesieur},
Timestamp = {2016.03.15},
Url = {http://www.sciencedirect.com/science/article/pii/S0378112716300718}
}
@INCOLLECTION{FentonHylanderPharo2015,
author = {Fenton, N.J. and Hylander, K. and Pharo, E.J.},
title = {Bryophytes in Forest Ecosystems},
booktitle = {Routledge Handbook of Forest Ecology},
publisher = {Routledge, Oxford, UK},
year = {2015},
editor = {Peh, K.S.-H. and Corlett, R.T. and Bergeron, Y.},
chapter = {17},
owner = {Luc},
timestamp = {2015.11.13}
} @Article{PaquetteBoudreaultFentonEtAl2016,
Title = {Bryophyte species assemblages in fire and clear-cut origin boreal forests},
Author = {Paquette, M. and Boudreault, C. and Fenton, N.J. and Pothier, D. and Bergeron, Y.},
Journal = {Forest Ecology and Management},
Year = {2016},
Pages = {99 - 108},
Volume = {359},
Abstract = {Abstract Natural and anthropogenic disturbances could have different impacts on understory plant communities. Investigating these differences could help improve silvicultural and management practices in order to better achieve biodiversity protection objectives. Using post-fire (20–90 years) and post-clearcutting (20–70 years) forest chronosequences placed on similar sites, we examined which environmental factors are the main drivers of bryophyte community assembly in eastern Canadian boreal forests, using information on bryophyte life-history strategies (colonist: high reproductive effort but a short potential life span; perennial: low reproductive effort and a long potential life span) to interpret the resulting patterns. The fire origin stands were affected by high-severity fires followed by natural regeneration, whereas the clear-cut stands were regenerated through the advance regeneration present in the understory of the harvested stands. Our results indicate that by killing the existing mosses and baring the mineral soil, fire tends to decrease the cover of perennial species (such as Pleurozium scherberii) and increase the presence of colonist species compared with clear-cut. Overall species richness does not increase much in older stands, but some species that have been identified by previous studies as being more sensitive to management activities, such as liverworts, tend to be strongly associated with balsam fir basal area, which is higher in mature clear-cut origin stands. This tree species tends to be heavily affected by partial mortality events after >50 years (insect outbreaks, windthrow), which could accelerate the creation of heterogeneous canopy structure and generate a greater diversity of microhabitats suitable for sensitive bryophyte species. More research needs to be conducted to better understand the underlying functional relationships between overstory tree composition and bryophyte communities.},
Doi = {http://dx.doi.org/10.1016/j.foreco.2015.09.031},
ISSN = {0378-1127},
Keywords = {Bryophytes},
Owner = {DanielLesieur},
Timestamp = {2015.10.15},
Url = {http://www.sciencedirect.com/science/article/pii/S0378112715005265}
}
@Article{RenardGauthierFentonEtal2016,
Title = {Prescribed burning after clearcut limits paludification in black spruce boreal forest },
Author = {Renard, S.M. and Gauthier, S. and Fenton, N.J. and Lafleur, B. and Bergeron, Y.},
Journal = {Forest Ecology and Management },
Year = {2016},
Pages = {147 - 155},
Volume = {359},
Abstract = {Abstract Paludification, the accumulation over the mineral soil of poorly decomposed organic matter mainly originating from Sphagnum spp., transforms black spruce (Picea mariana) boreal forests into forested peatlands in the prolonged absence of fire, which diminishes forest productivity. High-severity wildfires reset this process by burning the soil organic layer (SOL) and reinitiating forest succession. In contrast, low severity wildfires impact mainly the soil surface and tree layer and do not significantly reduce \{SOL\} depth. In the Clay Belt region of eastern Canada, an area prone to paludification, the current forest harvest practice (careful logging around advanced growth [CLAAG]) removes trees but has little impact on the \{SOL\} and the understorey vegetation. This is thought to further promote paludification, which consequently reduces forest productivity. Conversely, clearcut (CC) disturbs the \{SOL\} and the understorey vegetation, and is thought to favor tree growth. Furthermore, prescribed burning after clearcut (CCPB) is used as a site preparation technique, but may also be used to control paludification as it can burn part of the organic soil layer. Using a retrospective approach, our study examines three hypotheses: compared to CLAAG, \{CC\} and CCPB: (1) have positive effects on soil conditions (e.g. decomposition level and pH), (2) reduce Sphagnum spp. and ericaceous shrub cover and (3) result in enhanced black spruce growth. We sampled 22 sites in which we measured \{SOL\} characteristics (e.g. depth, decomposition state), understorey vegetation cover and black spruce growth. Compared to CLAAG, \{CCPB\} resulted in increased soil decomposition level and higher pH. \{CCPB\} also reduced Sphagnum spp. cover but not ericaceous shrub cover. Black spruce growth rate was higher following \{CCPB\} than CC, and mean dominant tree height was marginally higher following \{CCPB\} than \{CLAAG\} and CC. Our results demonstrate that \{CCPB\} is beneficial to black spruce growth, presumably through its effects on forest understorey and \{SOL\} chemistry. While not similar to a high severity fire, prescribed burning after clearcut in paludified stands on the Clay Belt emulates some wildfire effects such as increasing soil pH. We suggest that unlike CLAAG, prescribed burning after clearcut can restore black spruce stand productivity and should be considered in the context of forest ecosystem management. },
Doi = {http://dx.doi.org/10.1016/j.foreco.2015.09.037},
ISSN = {0378-1127},
Keywords = {Controlled burning},
Url = {http://www.sciencedirect.com/science/article/pii/S0378112715005320}
}
@ARTICLE{HennebValeriaFentonEtAl2015,
author = {Henneb, M. and Valeria, O. and Fenton, N.J. and Thiffault, N. and
Bergeron, Y.},
title = {Mechanical site preparation: Key to microsite creation success on
Clay Belt paludified sites},
journal = {Forestry Chronicle},
year = {2015},
volume = {91},
pages = {187-196},
number = {2},
note = {cited By 0},
abstract = {Paludification is the accumulation of partially decomposed organic
matter over saturated mineral soils. It reduces tree regeneration
and growth, mainly because of low temperatures and high water content
in the rooting zone, reduced organic matter decomposition, and hence,
low nutrient availability. On the Clay Belt of western Québec and
eastern Ontario, forests tend to paludify naturally but this process
might be promoted by logging methods. Our objective was to identify
which of two commonly used mechanical site preparation (MSP) techniques
is best adapted to reduce organic layer thickness (OLT) and generate
favourable planting microsites post-harvest in paludified sites.
Nine experimental blocks (between 20 ha-61 ha each) were delimited
within a 35 km2 forest sector with variable levels of paludification.
The forest sector was harvested by careful logging to protect advance
growth and soils and subsequently the nine experimental blocks were
treated with either forest harrowing, disc trenching (T26) or left
as untreated controls (harvesting only) with three replicate blocks
per treatment. We measured OLT before and after MSP and determined
planting microsite quality within each block. Results revealed significant
differences in OLT between MSP treatments and harvesting only. Overall,
harrowing was the best technique, as it reduced OLT more than T26
scarification and generated the highest percent of good microsites,
except where initial OLT was 44 cm-56 cm. Our results contribute
to the successful use of MSP in paludified forests. © 2015 Published
by NRC Research Press.},
author_keywords = {Boreal forest management; Mechanical site preparation; Microsites;
Organic layer thickness; Paludification; Peat},
document_type = {Article},
doi = {10.5558/tfc2015-030},
keywords = {Biogeochemistry; Biological materials; Harvesting; Organic compounds;
Peat; Reforestation, High water content; Mechanical site preparation;
Microsites; Nutrient availability; Organic layers; Organic matter
decomposition; Paludification; Tree regeneration, Forestry},
source = {Scopus},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84928108806&partnerID=40&md5=3c4605f5f1c1d01bd2162cf82b290000}
}
@Article{ChaiebFentonLafleurEtAl2015,
Title = {Can We Use Forest Inventory Mapping as a Coarse Filter in Ecosystem Based Management in the Black Spruce Boreal Forest?},
Author = {Chaieb, C. and Fenton, N.J. and Lafleur, B. and Bergeron, Y.},
Journal = {Forests},
Year = {2015},
Pages = {1195-2007},
Volume = {6},
Abstract = {Forest inventory mapping is used worldwide to describe forests at a large spatial scale via the delimitation of portions of the landscape that are structurally homogeneous. Consequently, there is a significant amount of descriptive forest data in forest inventory maps, particularly with the development of ecosystem classification, which represents a significant potential for use in ecosystem based management. With this study we propose to test whether forest inventory maps can be used to describe not only stand characteristics but also dynamic processes. The results indicate that stand types identifiable in forest inventory maps do not in fact represent unique developmental stages, but rather confound stands at multiple developmental stages that may be undergoing different ecological processes. The reasons for this are linked to both the interaction between succession, fire severity and paludification. Finally, some aspects of the process of forest inventory mapping itself contribute to the disjunction between forest types and forest succession. Given the low similarity between spruce mapping types and their actual description following forest inventories, it would be too ambitious to infer the dynamic aspects of spruce forest by map units.},
Owner = {DanielLesieur},
Timestamp = {2015.04.15}
}
@TECHREPORT{LafleurFentonBergeron2013,
author = {Lafleur, B. and Fenton, N.J. and Bergeron, Y.},
title = {The Potential effects of climate change on the growth and development
of forested peatlands in the Clay Belt (Ecodistrict 3E-1) of Northeastern
Ontario},
institution = {Ontario Ministry of Natural Resources},
year = {2013},
type = {Climate change research report},
number = {CCRR-35},
owner = {Luc},
timestamp = {2014.11.04}
}
@ARTICLE{LavoiePareFentonEtAl2005,
author = {Lavoie, M. and Pare, D. and Fenton, N.J. and Groot, A. and Taylor,
K.},
title = {Paludification and management of forested peatlands in Canada: A
literature review},
journal = {Environmental Reviews},
year = {2005},
volume = {13},
pages = {21-50},
number = {2},
note = {cited By (since 1996)38},
abstract = {The Clay Belt region of Quebec and Ontario supports a large forest
resource and an important forest industry. In this region, the majority
of the harvested volume allotted to forest companies is in forested
peatlands and boreal forests prone to paludification. Paludification
is the accumulation of organic matter over time, and is generally
believed to be caused by increasing soil moisture and Sphagnum colonization.
Paludification is influenced by external and internal factors; it
reduces soil temperature, decomposition rates, microbial activity,
and nutrient availability. As a result, paludification may lead to
lower site productivity with time after disturbance. Therefore, in
harvested stands with a thick organic matter layer, low soil disturbance
(as opposed to fire) and water table rise may create favourable conditions
for paludification that may ultimately be detrimental to timber production.
Past experiences suggest several solutions to prevent or control
the negative effects of paludification. Drainage and fertilization
applied together are generally good techniques to control paludification
and to improve tree productivity. On the other hand, we suggest that
site preparation as well as prescribed burning, preceded or not by
drainage, are avenues of research that deserve to be explored because
they hold the potential to control or even reverse paludification,
especially where peat accumulation is caused by natural succession
or where lateral peat expansion has occurred. © 2005 NRC Canada.},
author_keywords = {Careful logging; Forested peatland; Paludification; Productivity;
Soil disturbance; Wildfire},
coden = {ENRVE},
document_type = {Review},
doi = {10.1139/a05-006},
issn = {11818700},
keywords = {Biodiversity; Carbon; Decomposition; Drainage; Harvesting; Productivity;
Soils, Careful logging; Forested peatland; Paludification; Soil disturbance;
Wildfire, Forestry, Biodiversity; Carbon; Drainage; Forestry; Harvesting;
Productivity; Soil, Sphagnum},
source = {Scopus},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-21644475886&partnerID=40&md5=1578b58353c93f6fbe3dd91a39c0e661}
}
@ARTICLE{FentonFrego2005,
author = {Fenton, N.J. and Frego, K.A.},
title = {Bryophyte (moss and liverwort) conservation under remnant canopy
in managed forests},
journal = {Biological Conservation},
year = {2005},
volume = {122},
pages = {417-430},
number = {3},
note = {cited By (since 1996)62},
abstract = {Management of forest for timber values presents potential threats
for forest floor bryophytes, as localized disturbances are applied
across landscapes. Dispersal limitation may exacerbate local extirpation,
by preventing recolonization within a cut-block rotation period.
Populations of forest floor bryophytes that persist under those patches
of tree canopy remaining after clear-cutting could reduce dispersal
distances and thereby contribute to conservation of species across
the landscape. We examined bryophyte guilds (liverworts, forest-habitat
mosses and colonist-pioneer mosses) and community composition in
relation to habitat quality (microclimate and substrate) in five
treatment classes in New Brunswick Acadian forest, 4 years after
harvest. Four potential refugium classes with intact substrate were
examined: three were characterized by remnant canopy height, one
was treeless. These were compared to clear-cut areas with substrate
disturbance. Microclimate (temperature, total daily photosynthetically
active radiation and vapour pressure deficit) differed significantly
between areas with and without remnant canopy, but differed little
among refugium classes. This suggests that any remnant canopy moderates
microhabitat relative to treeless areas. Liverworts and forest-habitat
mosses were more frequent under remnant canopy than in open and clear-cut
areas, with 25 species present only under remnant canopy. Environmental
variation explained approximately 24% of bryophyte pattern, highlighting
the potential influence of the pre-harvest community, which we could
not document. In the absence of substrate disturbance, patches of
remnant canopy provide potential refugia for some forest-habitat
bryophytes. Characteristics of effective refugia (size and shape)
should be determined by assessments of their impacts on: (i) change
in bryophyte communities in refugia relative to natural dynamics
and (ii) recolonization of adjacent areas. © 2004 Elsevier Ltd.
All rights reserved.},
author_keywords = {Bryophytes; Disturbance; Forest management; Microclimate; Refugia},
coden = {BICOB},
document_type = {Article},
doi = {10.1016/j.biocon.2004.09.003},
issn = {00063207},
keywords = {bryophyte; clearcutting; dispersal; disturbance; forest floor; habitat
conservation; microclimate, Canada; New Brunswick; North America;
Western Hemisphere; World, Bryophyta; bryophytes; Impleta; Marchantiophyta},
source = {Scopus},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-9644260627&partnerID=40&md5=51effcc5ce2c98f2695714bc23d8ed53}
}
@ARTICLE{FentonFregoSims2003,
author = {Fenton, N.J. and Frego, K.A. and Sims, M.R.},
title = {Changes in forest floor bryophyte (moss and liverwort) communities
4 years after forest harvest},
journal = {Canadian Journal of Botany},
year = {2003},
volume = {81},
pages = {714-731},
number = {7},
note = {cited By (since 1996)46},
abstract = {Forest harvest presents a potential threat to forest floor bryophyte
communities primarily through alteration of the microclimate and
disturbance of substrates on the forest floor. Management, including
harvest, applied at the landscape scale creates patches of disturbance
of differing severities at the spatial scale experienced by bryophytes.
Presumably, bryophyte diversity in managed landscapes is best conserved
by forest harvest techniques that minimize community change, thereby
allowing disturbed communities to reassemble to approach predisturbance
composition. We monitored bryophyte community reassembly by sampling
quadrats established in a 54-ha management block of Acadian forest
in New Brunswick, before and after harvest. Quadrats were either
in unharvested areas, or experienced a range of disturbance severities
from removal of some or all canopy, to forest floor disturbance with
complete canopy removal. Bryophyte communities showed compositional
change over 4 years, even in areas that were not harvested. Although
species richness was maintained or recovered 4 years after harvest,
changes in species composition were significant in all disturbance
classes with greatest change related to forest floor disturbance.
In particular, liverworts were lost in areas with forest floor disturbance.
We suggest that the simplest method to reduce immediate species loss,
and presumably promote conservation of bryophyte communities within
managed forest landscapes, is to utilize techniques that reduce the
area of forest floor and associated substrates that are physically
disrupted. © 2003 NRC.},
author_keywords = {Bryophyte; Community change; Disturbance; Forest harvest; Monitoring},
coden = {CJBOA},
document_type = {Article},
doi = {10.1139/b03-063},
issn = {00084026},
keywords = {Biodiversity; Ecology; Harvesting; Morphology, Bryophyte community;
Forest floors; Liverworts; Quadrants, Forestry, anthropogenic effect;
bryophyte; community dynamics; environmental disturbance; forest
floor; forest management; timber harvesting, Anatomy; Biodiversity;
Ecology; Forestry; Harvesting, Canada; New Brunswick; North America;
Western Hemisphere; World, Bryophyta; bryophytes; Impleta; Marchantiophyta},
source = {Scopus},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-1642403613&partnerID=40&md5=b60cb2b0b33262f750012e5900c9b222}
}
