LeStum-BoivinMagnanGarneauEtAl2019

Reference

Le Stum-Boivin, E., Magnan, G., Garneau, M., Fenton, N.J., Grondin, P., Bergeron, Y. (2019) Spatiotemporal evolution of paludification associated with autogenic and allogenic factors in the black spruce-moss boreal forest of Québec, Canada. Quaternary Research, 91(2):650-664. (Scopus )

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.

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@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 },
}

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