Oliver Sonnentag

Membre régulier
Biogéosciences atmosphériques en hautes latitudes

Professeur agrégé et Chaire de recherche du Canada en biogéosciences atmosphériques en hautes latitudes
Département de Géographie
Université de Montréal
C.P. 6128 Succ. Centre Ville
Montréal (Québec) Canada, H3C 3J7

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FORMATION

• 2008 PhD degree, University of Toronto, Department of Geography and Program in Planning, Toronto, Ontario, Canada
• 2003 MSc GIS degree, University of Salzburg, Department of Geoinformatics/UNIGIS, Salzburg, Austria
• 2001 Dipl. geol. degree, Karlsruhe Institute of Technology, Department of Applied Geology, Karlsruhe, Germany

THÈMES DE RECHERCHE

Mes principaux intérêts scientifiques portent sur la compréhension des altérations dans les interactions entre la biosphère et l'atmosphère en réponse aux changements environnementaux mondiaux, utilisant des mesures par exemple : des mesures de covariance des turbulences), la télédétection (satellite et près de la surface) et les techniques de modélisation. Je suis également intéressé par la mesure locale et la cartographie (régionale, mondiale) des paramètres biophysiques pour étudier les changements dans la structure, le fonctionnement et la phénologie des écosystèmes terrestres.

DISTINCTIONS REÇUES

• 2022 - Membre du Collège de nouveaux chercheurs et créateurs en arts et en science de la Société royale du Canada, qui comprend les meilleurs leaders en milieu de carrière du Canada.

PUBLICATIONS

Livres

Aucun

Chapitres de livre

Aucun

Livres, numéros spéciaux et actes de colloques publiés à titre d'éditeur

Aucun

Articles révisés par un comité de lecture

1. Virkkala, A.-M., Rogers, B.M., Watts, J.D., Arndt, K.A., Potter, S., Wargowsky, I., Schuur, E.A.G., See, C.R., Mauritz, M., Boike, J. et al. (2025) Wildfires offset the increasing but spatially heterogeneous Arctic–boreal CO2 uptake. Nature Climate Change
2. Perron, N., Baltzer, J.L., Detto, M., Nehemy, M., Spence, C., Hould-Gosselin, G., Alcock, H., Hadiwijaya, B., Laroque, C.P., Sonnentag, O. (2024) Radiation, Air Temperature, and Soil Water Availability Drive Tree Water Deficit Across Temporal Scales in Canada's Western Boreal Forest. Geophysical Research Letters, 51(8)
3. Standen, K.M., Sniderhan, A.E., Sonnentag, O., Voigt, C., Baltzer, J.L. (2024) Response of Boreal Plant Communities and Forest Floor Carbon Fluxes to Experimental Nutrient Additions. Ecosystems, 27(3):462 – 478
4. Zhu, Q., Chen, J., Charles P.-A., B., Sonnentag, O., Montagnani, L., O’Halloran, T.L., Scott, R.L., Forsythe, J., Song, B., Zou, H. et al. (2024) Albedo-Induced Global Warming Potential Following Disturbances in Global Temperate and Boreal Forests. Journal of Geophysical Research: Biogeosciences, 129(3)
5. Treat, C.C., Virkkala, A.-M., Burke, E., Bruhwiler, L., Chatterjee, A., Fisher, J.B., Hashemi, J., Parmentier, F.-J.W., Rogers, B.M., Westermann, S. et al. (2024) Permafrost Carbon: Progress on Understanding Stocks and Fluxes Across Northern Terrestrial Ecosystems. Journal of Geophysical Research: Biogeosciences, 129(3)
6. Graveline, V., Helbig, M., Gosselin, G.H., Alcock, H., Detto, M., Walker, B., Marsh, P., Sonnentag, O. (2024) Surface-atmosphere energy exchanges and their effects on surface climate and atmospheric boundary layer characteristics in the forest-tundra ecotone in northwestern Canada. Agricultural and Forest Meteorology, 350
7. Dutch, V.R., Rutter, N., Wake, L., Sonnentag, O., Hould Gosselin, G., Sandells, M., Derksen, C., Walker, B., Meyer, G., Essery, R. et al. (2024) Simulating net ecosystem exchange under seasonal snow cover at an Arctic tundra site. Biogeosciences, 21(3):825 – 841
8. See, C.R., Virkkala, A.-M., Natali, S.M., Rogers, B.M., Mauritz, M., Biasi, C., Bokhorst, S., Boike, J., Bret-Harte, M.S., Celis, G. et al. (2024) Decadal increases in carbon uptake offset by respiratory losses across northern permafrost ecosystems. Nature Climate Change, 14(8):853 – 862
9. Spence, C., Coles, A., Gibson, J., Nicholls, E., Perron, N., Sniderhan, A., Sonnentag, O., Baltzer, J. (2024) The Influence of Tree Infilling on Energy Partitioning, Vegetation Water Use, and Soil Water State in Sparse Conifer Stands of the Taiga Shield Ecoregion. Water Resources Research, 60(8)
10. Pulliainen, J., Aurela, M., Aalto, T., Bottcher, K., Cohen, J., Derksen, C., Heimann, M., Helbig, M., Kolari, P., Kontu, A. et al. (2024) Increase in gross primary production of boreal forests balanced out by increase in ecosystem respiration. Remote Sensing of Environment, 313
11. Kuhn, M.A., Varner, R.K., McCalley, C.K., Perryman, C.R., Aurela, M., Burke, S.A., Chanton, J.P., Crill, P.M., DelGreco, J., Deng, J. et al. (2024) Controls on Stable Methane Isotope Values in Northern Peatlands and Potential Shifts in Values Under Permafrost Thaw Scenarios. Journal of Geophysical Research: Biogeosciences, 129(7)
12. Maiti, A., Hasan, M.K., Sannigrahi, S., Bar, S., Chakraborti, S., Mahto, S.S., Chatterjee, S., Pramanik, S., Pilla, F., Auerbach, J. et al. (2024) Optimal rainfall threshold for monsoon rice production in India varies across space and time. Communications Earth & Environment, 5(1)
13. Zona, D., Lafleur, P.M., Hufkens, K., Gioli, B., Bailey, B., Burba, G., Euskirchen, E.S., Watts, J.D., Arndt, K.A., Farina, M. et al. (2023) Pan-Arctic soil moisture control on tundra carbon sequestration and plant productivity. Global Change Biology, 29:1267-1281
14. Qu, B., Roy, A., Melton, J.R., Black, T.A., Amiro, B., Euskirchen, E.S., Ueyama, M., Kobayashi, H., Schulze, C., Gosselin, G.H. et al. (2023) A boreal forest model benchmarking dataset for North America: a case study with the Canadian Land Surface Scheme Including Biogeochemical Cycles (CLASSIC). Environmental Research Letters, 18(8)
15. Mavrovic, A., Sonnentag, O., Lemmetyinen, J., Baltzer, J.L., Kinnard, C., Roy, A. (2023) Reviews and syntheses: Recent advances in microwave remote sensing in support of terrestrial carbon cycle science in Arctic-boreal regions. Biogeosciences, 20(14):2941 – 2970
16. Schulze, C., Sonnentag, O., Voigt, C., Thompson, L., van Delden, L., Heffernan, L., Hernandez-Ramirez, G., Kuhn, M., Lin, S., Olefeldt, D. (2023) Nitrous Oxide Fluxes in Permafrost Peatlands Remain Negligible After Wildfire and Thermokarst Disturbance. Journal of Geophysical Research: Biogeosciences, 128(4)
17. McNicol, G., Fluet-Chouinard, E., Ouyang, Z., Knox, S., Zhang, Z., Aalto, T., Bansal, S., Chang, K.-Y., Chen, M., Delwiche, K. et al. (2023) Upscaling Wetland Methane Emissions From the FLUXNET-CH4 Eddy Covariance Network (UpCH4 v1.0): Model Development, Network Assessment, and Budget Comparison. AGU Advances, 4(5)
18. Watts, J.D., Farina, M., Kimball, J.S., Schiferl, L.D., Liu, Z., Arndt, K.A., Zona, D., Ballantyne, A., Euskirchen, E.S., Parmentier, F.-J.W. et al. (2023) Carbon uptake in Eurasian boreal forests dominates the high-latitude net ecosystem carbon budget. Global Change Biology, 29(7):1870 – 1889
19. Ueyama, M., Knox, S.H., Delwiche, K.B., Bansal, S., Riley, W.J., Baldocchi, D., Hirano, T., McNicol, G., Schafer, K., Windham-Myers, L. et al. (2023) Modeled production, oxidation, and transport processes of wetland methane emissions in temperate, boreal, and Arctic regions. Global Change Biology, 29(8):2313 – 2334
20. Pisek, J., Sonnentag, O., Christensen, T.R. (2023) Arctic science: resuming action without Russia. Nature, 615(7952):394
21. Stimmler, P., Goeckede, M., Elberling, B., Natali, S., Kuhry, P., Perron, N., Lacroix, F., Hugelius, G., Sonnentag, O., Strauss, J. et al. (2023) Pan-Arctic soil element bioavailability estimations. Earth System Science Data, 15(3):1059 – 1075
22. Perron, N., Baltzer, J.L., Sonnentag, O. (2023) Spatial and temporal variation in forest transpiration across a forested boreal peatland complex. Hydrological Processes, 37(2)
23. Zhang, Z., Bansal, S., Chang, K.-Y., Fluet-Chouinard, E., Delwiche, K., Goeckede, M., Gustafson, A., Knox, S., Leppanen, A., Liu, L. et al. (2023) Characterizing Performance of Freshwater Wetland Methane Models Across Time Scales at FLUXNET-CH4 Sites Using Wavelet Analyses. Journal of Geophysical Research: Biogeosciences, 128(11)
24. Thompson, L., Low, M., Shewan, R., Schulze, C., Simba, M., Sonnentag, O., Tank, S., Olefeldt, D. (2023) Concentrations and Yields of Mercury, Methylmercury, and Dissolved Organic Carbon From Contrasting Catchments in the Discontinuous Permafrost Region, Western Canada. Water Resources Research, 59(11)
25. Voigt, C., Virkkala, A.-M., Hould Gosselin, G., Bennett, K.A., Black, T.A., Detto, M., Chevrier-Dion, C., Guggenberger, G., Hashmi, W., Kohl, L. et al. (2023) Arctic soil methane sink increases with drier conditions and higher ecosystem respiration. Nature Climate Change, 13(10):1095 – 1104
26. Germain Chartrand, P., Sonnentag, O., Sanderson, N.K., Garneau, M. (2023) Recent peat and carbon accumulation on changing permafrost landforms along the Mackenzie River valley, Northwest Territories, Canada. Environmental Research Letters, 18(9)
27. Klotz, L.A., Sonnentag, O., Wang, Z., Wang, J.A., Kang, M. (2023) Oil and natural gas wells across the NASA ABoVE domain: fugitive methane emissions and broader environmental impacts. Environmental Research Letters, 18(3)
28. Virkkala, A.-M., Natali, S.M., Rogers, B.M., Watts, J.D., Savage, K., Connon, S.J., Mauritz, M., Schuur, E.A.G., Peter, D., Minions, C. et al. (2022) The ABCflux database: Arctic-boreal CO2flux observations and ancillary information aggregated to monthly time steps across terrestrial ecosystems. Earth System Science Data, 14(1):179-208
29. Oehri, J., Schaepman-Strub, G., Kim, J.-S., Grysko, R., Kropp, H., Grunberg, I., Zemlianskii, V., Sonnentag, O., Euskirchen, E.S., Reji Chacko, M. et al. (2022) Vegetation type is an important predictor of the arctic summer land surface energy budget. Nature Communications, 13:6379
30. Zolkos, S., Tank, S., Kokelj, S., Striegl, R., Shakil, S., Voigt, C., Sonnentag, O., Quinton, W., Schuur, E., Zona, D. et al. (2022) Permafrost landscape history shapes fluvial chemistry, ecosystem carbon balance, and potential trajectories of future change. Global Biogeochemical Cycles, 36
31. Martin, M.R., Kumar, P., Sonnentag, O., Marsh, P. (2022) Thermodynamic basis for the demarcation of Arctic and alpine treelines. Scientific Reports, 12:12565
32. El-Amine, M., Roy, A., Koebsch, F., Baltzer, J.L., Barr, A., Black, A., Ikawa, H., Iwata, H., Kobayashi, H., Ueyama, M. et al. (2022) What explains the year-to-year variation in growing season timing of boreal black spruce forests? Agricultural and Forest Meteorology, 324:109113
33. Yuan, K., Zhu, Q., Li, F., Riley, W.J., Torn, M., Chu, H., McNicol, G., Chen, M., Knox, S., Delwiche, K. et al. (2022) Causality guided machine learning model on wetland CH4 emissions across global wetlands. Agricultural and Forest Meteorology, 324:109115
34. Dimitrov, D.D., Lafleur, P., Sonnentag, O., Talbot, J., Quinton, W.L. (2022) Hydrology of peat estimated from near-surface water contents. Hydrological Sciences Journal, 67:1702-1721
35. Curasi, S.R., Fetcher, N., Hewitt, R.E., Lafleur, P.M., Loranty, M.M., Mack, M.C., May, J.L., Myers-Smith, I.H., Natali, S.M., Oberbauer, S.F. et al. (2022) Range shifts in a foundation sedge potentially induce large Arctic ecosystem carbon losses and gains. Environmental Research Letters, 17:045024
36. Dutch, V.R., Rutter, N., Wake, L., Sandells, M., Derksen, C., Walker, B., Hould Gosselin, G., Sonnentag, O., Essery, R., Kelly, R. et al. (2022) Impact of measured and simulated tundra snowpack properties on heat transfer. The Cryosphere, 16:4201-4222
37. Cheng, R., Magney, T.S., Orcutt, E.L., Pierrat, Z., Kohler, P., Bowling, D.R., Bret-Harte, M.S., Euskirchen, E.S., Jung, M., Kobayashi, H. et al. (2022) Evaluating photosynthetic activity across Arctic-Boreal land cover types using solar-induced fluorescence. Environmental Research Letters, 17:115009
38. Nehemy, M.F., Maillet, J., Perron, N., Pappas, C., Sonnentag, O., Baltzer, J.L., Laroque, C.P., McDonnell, J.J. (2022) Snowmelt Water Use at Transpiration Onset: Phenology, Isotope Tracing, and Tree Water Transit Time. Water Resources Research, 58:e2022WR032344
39. Mousavi, S.M., Dinan, N.M., Ansarifard, S., Sonnentag, O. (2022) Analyzing spatio-temporal patterns in atmospheric carbon dioxide concentration across Iran from 2003 to 2020. Atmospheric Environment: X, 14:100163
40. Stimmler, P., Gockede, M., Natali, S.M., Sonnentag, O., Gilfedder, B.S., Perron, N., Schaller, J. (2022) The importance of calcium and amorphous silica for arctic soil CO2 production. Frontiers in Environmental Science, 10
41. Foster, A.C., Wang, J.A., Frost, G.V., Davidson, S.J., Hoy, E., Turner, K.W., Sonnentag, O., Epstein, H., Berner, L.T., Armstrong, A.H. et al. (2022) Disturbances in North American boreal forest and Arctic tundra: impacts, interactions, and responses. Environmental Research Letters, 17:113001
42. Chu, H., Luo, X., Ouyang, Z., Chan, W.S., Dengel, S., Biraud, S.C., Torn, M.S., Metzger, S., Kumar, J., Arain, M.A. et al. (2021) Representativeness of Eddy-Covariance flux footprints for areas surrounding AmeriFlux sites. Agricultural and Forest Meteorology, 301-302
43. Loisel, J., Gallego-Sala, A.V., Amesbury, M.J., Magnan, G., Anshari, G., Beilman, D.W., Benavides, J.C., Blewett, J., Camill, P., Charman, D.J. et al. (2021) Author Correction: Expert assessment of future vulnerability of the global peatland carbon sink (Nature Climate Change, (2021), 11, 1, (70-77), 10.1038/s41558-020-00944-0). Nature Climate Change, 11(4):362
44. Holtzman, N.M., Anderegg, L.D.L., Kraatz, S., Mavrovic, A., Sonnentag, O., Pappas, C., Cosh, M.H., Langlois, A., Lakhankar, T., Tesser, D. et al. (2021) L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand. Biogeosciences, 18(2):739-753
45. Kropp, H., Loranty, M.M., Natali, S.M., Kholodov, A.L., Rocha, A.V., Myers-Smith, I., Abbot, B.W., Abermann, J., Blanc-Betes, E., Blok, D. et al. (2021) Shallow soils are warmer under trees and tall shrubs across Arctic and Boreal ecosystems. Environmental Research Letters, 16(1)
46. Loisel, J., Gallego-Sala, A.V., Amesbury, M.J., Magnan, G., Anshari, G., Beilman, D.W., Benavides, J.C., Blewett, J., Camill, P., Charman, D.J. et al. (2021) Expert assessment of future vulnerability of the global peatland carbon sink. Nature Climate Change, 11(1):70-77
47. Chang, K.-Y., Riley, W.J., Knox, S.H., Jackson, R.B., McNicol, G., Poulter, B., Aurela, M., Baldocchi, D., Bansal, S., Bohrer, G. et al. (2021) Substantial hysteresis in emergent temperature sensitivity of global wetland CH4 emissions. Nature Communications, 12(1)
48. Irvin, J., Zhou, S., McNicol, G., Lu, F., Liu, V., Fluet-Chouinard, E., Ouyang, Z., Knox, S.H., Lucas-Moffat, A., Trotta, C. et al. (2021) Gap-filling eddy covariance methane fluxes: Comparison of machine learning model predictions and uncertainties at FLUXNET-CH4 wetlands. Agricultural and Forest Meteorology, 308-309
49. Knox, S.H., Bansal, S., McNicol, G., Schafer, K., Sturtevant, C., Ueyama, M., Valach, A.C., Baldocchi, D., Delwiche, K., Desai, A.R. et al. (2021) Identifying dominant environmental predictors of freshwater wetland methane fluxes across diurnal to seasonal time scales. Global Change Biology, 27(15):3582-3604
50. Pierrat, Z., Nehemy, M.F., Roy, A., Magney, T., Parazoo, N.C., Laroque, C., Pappas, C., Sonnentag, O., Grossmann, K., Bowling, D.R. et al. (2021) Tower-Based Remote Sensing Reveals Mechanisms Behind a Two-phased Spring Transition in a Mixed-Species Boreal Forest. Journal of Geophysical Research: Biogeosciences, 126(5)
51. Wu, C., Wang, J., Ciais, P., Penuelas, J., Zhang, X., Sonnentag, O., Tian, F., Wang, X., Wang, H., Liu, R. et al. (2021) Widespread decline in winds delayed autumn foliar senescence over high latitudes. Proceedings of the National Academy of Sciences of the United States of America, 118(16)
52. Virkkala, A.-M., Aalto, J., Rogers, B.M., Tagesson, T., Treat, C.C., Natali, S.M., Watts, J.D., Potter, S., Lehtonen, A., Mauritz, M. et al. (2021) Statistical upscaling of ecosystem CO2 fluxes across the terrestrial tundra and boreal domain: Regional patterns and uncertainties. Global Change Biology, 27(17):4040-4059
53. Watts, J.D., Natali, S.M., Minions, C., Risk, D., Arndt, K., Zona, D., Euskirchen, E.S., Rocha, A.V., Sonnentag, O., Helbig, M. et al. (2021) Soil respiration strongly offsets carbon uptake in Alaska and Northwest Canada. Environmental Research Letters, 16(8)
54. Delwiche, K.B., Knox, S.H., Malhotra, A., Fluet-Chouinard, E., McNicol, G., Feron, S., Ouyang, Z., Papale, D., Trotta, C., Canfora, E. et al. (2021) FLUXNET-CH4: A global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands. Earth System Science Data, 13(7):3607-3689
55. Olefeldt, D., Hovemyr, M., Kuhn, M.A., Bastviken, D., Bohn, T.J., Connolly, J., Crill, P., Euskirchen, E.S., Finkelstein, S.A., Genet, H. et al. (2021) The boreal-arctic wetland and lake dataset (BAWLD). Earth System Science Data, 13(11):5127-5149
56. Connon, R.F., Chasmer, L., Haughton, E., Helbig, M., Hopkinson, C., Sonnentag, O., Quinton, W.L. (2021) The implications of permafrost thaw and land cover change on snow water equivalent accumulation, melt and runoff in discontinuous permafrost peatlands. Hydrological Processes, 35(9)
57. Stralberg, D., Arseneault, D., Baltzer, J.L., Barber, Q.E., Bayne, E.M., Boulanger, Y., Brown, C.D., Cooke, H.A., Devito, K., Edwards, J. et al. (2020) Climate-change refugia in boreal North America: what, where, and for how long? Frontiers in Ecology and the Environment, 18(5, SI):261-270
58. Roy, A., Toose, P., Mavrovic, A., Pappas, C., Royer, A., Derksen, C., Berg, A., Rowlandson, T., El-Amine, M., Barr, A. et al. (2020) L-Band response to freeze/thaw in a boreal forest stand from ground- and tower-based radiometer observations. Remote Sensing of Environment, 237
59. Liu, Y., Wu, C., Sonnentag, O., Desai, A.R., Wang, J. (2020) Using the red chromatic coordinate to characterize the phenology of forest canopy photosynthesis. Agricultural and Forest Meteorology, 285-286
60. Wang, J.A., Sulla-Menashe, D., Woodcock, C.E., Sonnentag, O., Keeling, R.F., Friedl, M.A. (2020) Extensive land cover change across Arctic–Boreal Northwestern North America from disturbance and climate forcing. Global Change Biology, 26(2):807-822
61. Liu, Z., Kimball, J.S., Parazoo, N.C., Ballantyne, A.P., Wang, W.J., Madani, N., Pan, C.G., Watts, J.D., Reichle, R.H., Sonnentag, O. et al. (2020) Increased high-latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition. Global Change Biology, 26(2):682-696
62. Koebsch, F., Sonnentag, O., Jarveoja, J., Peltoniemi, M., Alekseychik, P., Aurela, M., Arslan, A.N., Dinsmore, K., Gianelle, D., Helfter, C. et al. (2020) Refining the role of phenology in regulating gross ecosystem productivity across European peatlands. Global Change Biology, 26(2):876-887
63. Pappas, C., Maillet, J., Rakowski, S., Baltzer, J.L., Barr, A.G., Black, T.A., Fatichi, S., Laroque, C.P., Matheny, A.M., Roy, A. et al. (2020) Aboveground tree growth is a minor and decoupled fraction of boreal forest carbon input. Agricultural and Forest Meteorology, 290
64. Helbig, M., Waddington, J.M., Alekseychik, P., Amiro, B.D., Aurela, M., Barr, A.G., Black, T.A., Blanken, P.D., Carey, S.K., Chen, J. et al. (2020) Increasing contribution of peatlands to boreal evapotranspiration in a warming climate. Nature Climate Change, 10(6):555-560
65. Baltzer, J.L., Sonnentag, O. (2020) No beating around the bush: the impact of projected high-latitude vegetation transitions on soil and ecosystem respiration. New Phytologist, 227(6):1591-1593
66. Holtzman, N., Anderegg, L. D. L., Kraatz, S., Mavrovic, A., Sonnentag, O., Pappas, C., Cosh, M. H., Langlois, A., Lakhankar, T., Tesser, D. et al. (2020) L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand. Biogeosciences Discussions, 2020:1-26
67. Helbig, M., Waddington, J.M., Alekseychik, P., Amiro, B., Aurela, M., Barr, A.G., Black, T.A., Carey, S.K., Chen, J., Chi, J. et al. (2020) The biophysical climate mitigation potential of boreal peatlands during the growing season. Environmental Research Letters, 15(10)
68. Voigt, C., Marushchak, M.E., Abbott, B.W., Biasi, C., Elberling, B., Siciliano, S.D., Sonnentag, O., Stewart, K.J., Yang, Y., Martikainen, P.J. (2020) Nitrous oxide emissions from permafrost-affected soils. Nature Reviews Earth & Environment, 1(8):420-434
69. Eitel, J.U.H., Maguire, A.J., Boelman, N., Vierling, L.A., Griffin, K.L., Jensen, J., Magney, T.S., Mahoney, P.J., Meddens, A.J.H., Silva, C. et al. (2019) Proximal remote sensing of tree physiology at northern treeline: Do late-season changes in the photochemical reflectance index (PRI) respond to climate or photoperiod? Remote Sensing of Environment, 221:340-350
70. Quinton, W., Berg, A., Braverman, M., Carpino, O., Chasmer, L., Connon, R., Craig, J., Devoie, E., Hayashi, M., Haynes, K. et al. (2019) A synthesis of three decades of hydrological research at Scotty Creek, NWT, Canada. Hydrology and Earth System Sciences, 23(4):2015-2039
71. Peltola, O., Vesala, T., Gao, Y., Raty, O., Alekseychik, P., Aurela, M., Chojnicki, B., Desai, A.R., Dolman, A.J., Euskirchen, E.S. et al. (2019) Monthly gridded data product of northern wetland methane emissions based on upscaling eddy covariance observations. Earth System Science Data, 11(3):1263-1289
72. Stone, L.E., Fang, X., Haynes, K.M., Helbig, M., Pomeroy, J.W., Sonnentag, O., Quinton, W.L. (2019) Modelling the effects of permafrost loss on discharge from a wetland-dominated, discontinuous permafrost basin. Hydrological Processes, 33(20):2607-2626
73. Natali, S.M., Watts, J.D., Rogers, B.M., Potter, S., Ludwig, S.M., Selbmann, A.-K., Sullivan, P.F., Abbott, B.W., Arndt, K.A., Birch, L. et al. (2019) Large loss of CO2 in winter observed across the northern permafrost region. Nature Climate Change, 9(11):852-857
74. Wilcox, E.J., Keim, D., de Jong, T., Walker, B., Sonnentag, O., Sniderhan, A.E., Mann, P., Marsh, P. (2019) Tundra shrub expansion may amplify permafrost thaw by advancing snowmelt timing. Arctic Science, 5(4):202-217
75. Natali, S.M., Watts, J.D., Rogers, B.M., Potter, S., Ludwig, S.M., Selbmann, A.-K., Sullivan, P.F., Abbott, B.W., Arndt, K.A., Birch, L. et al. (2019) Author Correction: Large loss of CO2 in winter observed across the northern permafrost region (Nature Climate Change, (2019), 9, 11, (852-857), 10.1038/s41558-019-0592-8). Nature Climate Change, 9(12):1005
76. Rapinski, M., Payette, F., Sonnentag, O., Herrmann, T.M., Royer, M.-J.S., Cuerrier, A., Siegwart Collier, L., Hermanutz, L., Guanish, G., Elders of Kawawachikamach et al. (2018) Listening to Inuit and Naskapi peoples in the eastern Canadian Subarctic: a quantitative comparison of local observations with gridded climate data. Regional Environmental Change, 18(1):189-203
77. Warren, R.K., Pappas, C., Helbig, M., Chasmer, L.E., Berg, A.A., Baltzer, J.L., Quinton, W.L., Sonnentag, O. (2018) Minor contribution of overstorey transpiration to landscape evapotranspiration in boreal permafrost peatlands. Ecohydrology
78. Filippa, G., Cremonese, E., Migliavacca, M., Galvagno, M., Sonnentag, O., Humphreys, E., Hufkens, K., Ryu, Y., Verfaillie, J., Morra di Cella, U. et al. (2018) NDVI derived from near-infrared-enabled digital cameras: Applicability across different plant functional types. Agricultural and Forest Meteorology, 249:275-285
79. Fisher, J.B., Hayes, D.J., Schwalm, C.R., Huntzinger, D.N., Stofferahn, E., Schaefer, K., Luo, Y., Wullschleger, S.D., Goetz, S.J., Miller, C.E. et al. (2018) Missing pieces to modeling the Arctic-Boreal puzzle. Environmental Research Letters, 13(2):020202
80. Mavrovic, A., Roy, A., Royer, A., Filali, B., Boone, F., Pappas, C., Sonnentag, O. (2018) Dielectric characterization of vegetation at L band using an open-ended coaxial probe. Geoscientific Instrumentation, Methods and Data Systems, 7(3):195-208
81. Pisek, J., Buddenbaum, H., Camacho, F., Hill, J., Jensen, J.L.R., Lange, H., Liu, Z., Piayda, A., Qu, Y., Roupsard, O. et al. (2018) Data synergy between leaf area index and clumping index Earth Observation products using photon recollision probability theory. Remote Sensing of Environment, 215:1-6
82. Peichl, M., Gazovič, M., Vermeij, I., De Goede, E., Sonnentag, O., Limpens, J., Nilsson, M.B. (2018) Peatland vegetation composition and phenology drive the seasonal trajectory of maximum gross primary production. Scientific Reports, 8(1)
83. Peters, R.L., Fonti, P., Frank, D.C., Poyatos, R., Pappas, C., Kahmen, A., Carraro, V., Prendin, A.L., Schneider, L., Baltzer, J.L. et al. (2018) Quantification of uncertainties in conifer sap flow measured with the thermal dissipation method. New Phytologist, 219(4):1283-1299
84. Pappas, C., Matheny, A.M., Baltzer, J.L., Barr, A.G., Black, T.A., Bohrer, G., Detto, M., Maillet, J., Roy, A., Sonnentag, O. et al. (2018) Boreal tree hydrodynamics: Asynchronous, diverging, yet complementary. Tree Physiology, 38(7):953-964
85. Loranty, M.M., Abbott, B.W., Blok, D., Douglas, T.A., Epstein, H.E., Forbes, B.C., Jones, B.M., Kholodov, A.L., Kropp, H., Malhotra, A. et al. (2018) Reviews and syntheses: Changing ecosystem influences on soil thermal regimes in northern high-latitude permafrost regions. Biogeosciences, 15(17):5287-5313
86. Franz, D., Acosta, M., Altimir, N., Arriga, N., Arrouays, D., Aubinet, M., Aurela, M., Ayres, E., Lopez-Ballesteros, A., Barbaste, M. et al. (2018) Towards long-Term standardised carbon and greenhouse gas observations for monitoring Europe's terrestrial ecosystems: A review. International Agrophysics, 32(4):439-455
87. Gielen, B., Acosta, M., Altimir, N., Buchmann, N., Cescatti, A., Ceschia, E., Fleck, S., Hortnagl, L., Klumpp, K., Kolari, P. et al. (2018) Ancillary vegetation measurements at ICOS ecosystem stations. International Agrophysics, 32(4):645-664
88. Helbig, M., Chasmer, L.E., Kljun, N., Quinton, W.L., Treat, C.C., Sonnentag, O. (2017) The positive net radiative greenhouse gas forcing of increasing methane emissions from a thawing boreal forest-wetland landscape. Global Change Biology, 23(6):2413-2427
89. Helbig, M., Chasmer, L.E., Desai, A.R., Kljun, N., Quinton, W.L., Sonnentag, O. (2017) Direct and indirect climate change effects on carbon dioxide fluxes in a thawing boreal forest–wetland landscape. Global Change Biology, 23(8):3231-3248
90. Roy, A., Toose, P., Derksen, C., Rowlandson, T., Berg, A.A., Lemmetyinen, J., Royer, A., Tetlock, E., Helgason, W., Sonnentag, O. (2017) Spatial variability of L-Band brightness temperature during freeze/thaw events over a prairie environment. Remote Sensing, 9(9)
91. Pelletier, N., Talbot, J., Olefeldt, D., Turetsky, M., Blodau, C., Sonnentag, O., Quinton, W.L. (2017) Influence of Holocene permafrost aggradation and thaw on the paleoecology and carbon storage of a peatland complex in northwestern Canada. Holocene, 27(9):1391-1405
92. Helbig, M., Quinton, W.L., Sonnentag, O. (2017) Warmer spring conditions increase annual methane emissions from a boreal peat landscape with sporadic permafrost. Environmental Research Letters, 12(11)
93. Helbig, M., Pappas, C., Sonnentag, O. (2016) Permafrost thaw and wildfire: Equally important drivers of boreal tree cover changes in the Taiga Plains, Canada. Geophysical Research Letters, 43(4):1598-1606
94. Brown, T.B., Hultine, K.R., Steltzer, H., Denny, E.G., Denslow, M.W., Granados, J., Henderson, S., Moore, D., Nagai, S., Sanclements, M. et al. (2016) Using phenocams to monitor our changing earth: Toward a global phenocam network. Frontiers in Ecology and the Environment, 14(2):84-93
95. Moore, C.E., Brown, T., Keenan, T.F., Duursma, R.A., Van Dijk, A.I.J.M., Beringer, J., Culvenor, D., Evans, B., Huete, A., Hutley, L.B. et al. (2016) Reviews and syntheses: Australian vegetation phenology: New insights from satellite remote sensing and digital repeat photography. Biogeosciences, 13(17):5085-5102
96. Helbig, M., Wischnewski, K., Gosselin, G.H., Biraud, S.C., Bogoev, I., Chan, W.S., Euskirchen, E.S., Glenn, A.J., Marsh, P.M., Quinton, W.L. et al. (2016) Addressing a systematic bias in carbon dioxide flux measurements with the EC150 and the IRGASON open-path gas analyzers. Agricultural and Forest Meteorology, 228-229:349-359
97. Helbig, M., Wischnewski, K., Kljun, N., Chasmer, L.E., Quinton, W.L., Detto, M., Sonnentag, O. (2016) Regional atmospheric cooling and wetting effect of permafrost thaw-induced boreal forest loss. Global Change Biology, 22(12):4048-4066
98. Hwang, Y., Ryu, Y., Kimm, H., Jiang, C., Lang, M., Macfarlane, C., Sonnentag, O. (2016) Correction for light scattering combined with sub-pixel classification improves estimation of gap fraction from digital cover photography. Agricultural and Forest Meteorology, 222:32-44
99. Toomey, M., Friedl, M.A., Frolking, S., Hufkens, K., Klosterman, S., Sonnentag, O., Baldocchi, D.D., Bernacchi, C.J., Biraud, S.C., Bohrer, G. et al. (2015) Greenness indices from digital cameras predict the timing and seasonal dynamics of canopy-scale photosynthesis. Ecological Applications, 25(1):99-115
100. Connon, R.F., Quinton, W.L., Craig, J.R., Hanisch, J., Sonnentag, O. (2015) The hydrology of interconnected bog complexes in discontinuous permafrost terrains. Hydrological Processes, 29(18):3831-3847
101. Detto, M., Asner, G.P., Muller-Landau, H.C., Sonnentag, O. (2015) Spatial variability in tropical forest leaf area density from multireturn lidar and modeling. Journal of Geophysical Research: Biogeosciences, 120(2):294-309
102. Matthes, J.H., Knox, S.H., Sturtevant, C., Sonnentag, O., Verfaillie, J., Baldocchi, D. (2015) Predicting landscape-scale CO2 flux at a pasture and rice paddy with long-term hyperspectral canopy reflectance measurements. Biogeosciences, 12(15):4577-4594
103. Garon-Labrecque, M.-E., Leveille-Bourret, E., Higgins, K., Sonnentag, O. (2015) Additions to the boreal flora of the Northwest Territories with a preliminary vascular flora of Scotty creek. The Canadian Field-Naturalist, 129(4):349-367
104. Raabe, K., Pisek, J., Sonnentag, O., Annuk, K. (2015) Variations of leaf inclination angle distribution with height over the growing season and light exposure for eight broadleaf tree species. Agricultural and Forest Meteorology, 214-215:2-11
105. Peichl, M., Sonnentag, O., Nilsson, M.B. (2014) Bringing Color into the Picture: Using Digital Repeat Photography to Investigate Phenology Controls of the Carbon Dioxide Exchange in a Boreal Mire. Ecosystems, 18(1):115-131
106. Klosterman, S.T., Hufkens, K., Gray, J.M., Melaas, E., Sonnentag, O., Lavine, I., Mitchell, L., Norman, R., Friedl, M.A., Richardson, A.D. (2014) Evaluating remote sensing of deciduous forest phenology at multiple spatial scales using PhenoCam imagery. Biogeosciences, 11(16):4305-4320
107. Keenan, T.F., Darby, B., Felts, E., Sonnentag, O., Friedl, M.A., Hufkens, K., O'Keefe, J., Klosterman, S., Munger, J.W., Toomey, M. et al. (2014) Tracking forest phenology and seasonal physiology using digital repeat photography: A critical assessment. Ecological Applications, 24(6):1478-1489
108. Talbot, J., Roulet, N.T., Sonnentag, O., Moore, T.R. (2014) Increases in aboveground biomass and leaf area 85 years after drainage in a bog. Botany, 92(10):713-721
109. Macfarlane, C., Ryu, Y., Ogden, G.N., Sonnentag, O. (2014) Digital canopy photography: Exposed and in the raw. Agricultural and Forest Meteorology, 197:244-253
110. Peichl, M., Sonnentag, O., Wohlfahrt, G., Flanagan, L.B., Baldocchi, D.D., Kiely, G., Galvagno, M., Gianelle, D., Marcolla, B., Pio, C. et al. (2013) Convergence of potential net ecosystem production among contrasting C3 grasslands. Ecology Letters, 16(4):502-512
111. Richardson, A.D., Keenan, T.F., Migliavacca, M., Ryu, Y., Sonnentag, O., Toomey, M. (2013) Climate change, phenology, and phenological control of vegetation feedbacks to the climate system. Agricultural and Forest Meteorology, 169:156-173
112. Pisek, J., Sonnentag, O., Richardson, A.D., Mottus, M. (2013) Is the spherical leaf inclination angle distribution a valid assumption for temperate and boreal broadleaf tree species? Agricultural and Forest Meteorology, 169:186-194
113. Vargas, R., Sonnentag, O., Abramowitz, G., Carrara, A., Chen, J.M., Ciais, P., Correia, A., Keenan, T.F., Kobayashi, H., Ourcival, J.-M. et al. (2013) Drought Influences the Accuracy of Simulated Ecosystem Fluxes: A Model-Data Meta-analysis for Mediterranean Oak Woodlands. Ecosystems, 16(5):749-764
114. Royer, M.-J.S., Herrmann, T.M., Sonnentag, O., Fortier, D., Delusca, K., Cuciurean, R. (2013) Linking Cree hunters' and scientific observations of changing inland ice and meteorological conditions in the subarctic eastern James Bay region, Canada. Climatic Change, 119(3-4):719-732
115. Kross, A., Seaquist, J.W., Roulet, N.T., Fernandes, R., Sonnentag, O. (2013) Estimating carbon dioxide exchange rates at contrasting northern peatlands using MODIS satellite data. Remote Sensing of Environment, 137:234-243
116. Sonnentag, O., Hufkens, K., Teshera-Sterne, C., Young, A.M., Friedl, M., Braswell, B.H., Milliman, T., O'Keefe, J., Richardson, A.D. (2012) Digital repeat photography for phenological research in forest ecosystems. Agricultural and Forest Meteorology, 152(1):159-177
117. Baldocchi, D., Detto, M., Sonnentag, O., Verfaillie, J., Teh, Y.A., Silver, W., Kelly, N.M. (2012) The challenges of measuring methane fluxes and concentrations over a peatland pasture. Agricultural and Forest Meteorology, 153:177-187
118. Hufkens, K., Friedl, M., Sonnentag, O., Braswell, B.H., Milliman, T., Richardson, A.D. (2012) Linking near-surface and satellite remote sensing measurements of deciduous broadleaf forest phenology. Remote Sensing of Environment, 117:307-321
119. Hatala, J.A., Detto, M., Sonnentag, O., Deverel, S.J., Verfaillie, J., Baldocchi, D.D. (2012) Greenhouse gas (CO 2, CH 4, H 2O) fluxes from drained and flooded agricultural peatlands in the Sacramento-San Joaquin Delta. Agriculture, Ecosystems and Environment, 150:1-18
120. Migliavacca, M., Sonnentag, O., Keenan, T.F., Cescatti, A., O'Keefe, J., Richardson, A.D. (2012) On the uncertainty of phenological responses to climate change, and implications for a terrestrial biosphere model. Biogeosciences, 9(6):2063-2083
121. Hufkens, K., Friedl, M.A., Keenan, T.F., Sonnentag, O., Bailey, A., O'Keefe, J., Richardson, A.D. (2012) Ecological impacts of a widespread frost event following early spring leaf-out. Global Change Biology, 18(7):2365-2377
122. Ryu, Y., Verfaillie, J., Macfarlane, C., Kobayashi, H., Sonnentag, O., Vargas, R., Ma, S., Baldocchi, D.D. (2012) Continuous observation of tree leaf area index at ecosystem scale using upward-pointing digital cameras. Remote Sensing of Environment, 126:116-125
123. Sonnentag, O., Detto, M., Runkle, B.R.K., Teh, Y.A., Silver, W.L., Kelly, M., Baldocchi, D.D. (2011) Carbon dioxide exchange of a pepperweed (Lepidium latifolium L.) infestation: How do flowering and mowing affect canopy photosynthesis and autotrophic respiration? Journal of Geophysical Research: Biogeosciences, 116(1)
124. Teh, Y.A., Silver, W.L., Sonnentag, O., Detto, M., Kelly, M., Baldocchi, D.D. (2011) Large Greenhouse Gas Emissions from a Temperate Peatland Pasture. Ecosystems, 14(2):311-325
125. Govind, A., Chen, J.M., Mcdonnell, J., Kumari, J., Sonnentag, O. (2011) Effects of lateral hydrological processes on photosynthesis and evapotranspiration in a boreal ecosystem. Ecohydrology, 4(3):394-410
126. Sonnentag, O., Detto, M., Vargas, R., Ryu, Y., Runkle, B.R.K., Kelly, M., Baldocchi, D.D. (2011) Tracking the structural and functional development of a perennial pepperweed (Lepidium latifolium L.) infestation using a multi-year archive of webcam imagery and eddy covariance measurements. Agricultural and Forest Meteorology, 151(7):916-926
127. Migliavacca, M., Galvagno, M., Cremonese, E., Rossini, M., Meroni, M., Sonnentag, O., Cogliati, S., Manca, G., Diotri, F., Busetto, L. et al. (2011) Using digital repeat photography and eddy covariance data to model grassland phenology and photosynthetic CO2 uptake. Agricultural and Forest Meteorology, 151(10):1325-1337
128. Ryu, Y., Sonnentag, O., Nilson, T., Vargas, R., Kobayashi, H., Wenk, R., Baldocchi, D.D. (2010) How to quantify tree leaf area index in an open savanna ecosystem: A multi-instrument and multi-model approach. Agricultural and Forest Meteorology, 150(1):63-76
129. Ryu, Y., Nilson, T., Kobayashi, H., Sonnentag, O., Law, B.E., Baldocchi, D.D. (2010) On the correct estimation of effective leaf area index: Does it reveal information on clumping effects? Agricultural and Forest Meteorology, 150(3):463-472
130. Sonnentag, O., van der Kamp, G., Barr, A.G., Chen, J.M. (2010) On the relationship between water table depth and water vapor and carbon dioxide fluxes in a minerotrophic fen. Global Change Biology, 16(6):1762-1776
131. Pisek, J., Chen, J.M., Lacaze, R., Sonnentag, O., Alikas, K. (2010) Expanding global mapping of the foliage clumping index with multi-angular POLDER three measurements: Evaluation and topographic compensation. ISPRS Journal of Photogrammetry and Remote Sensing, 65(4):341-346
132. Sulman, B.N., Desai, A.R., Saliendra, N.Z., Lafleur, P.M., Flanagan, L.B., Sonnentag, O., MacKay, D.S., Barr, A.G., Van Der Kamp, G. (2010) CO2 fluxes at northern fens and bogs have opposite responses to inter-annual fluctuations in water table. Geophysical Research Letters, 37(19)
133. Ryu, Y., Baldocchi, D.D., Verfaillie, J., Ma, S., Falk, M., Ruiz-Mercado, I., Hehn, T., Sonnentag, O. (2010) Testing the performance of a novel spectral reflectance sensor, built with light emitting diodes (LEDs), to monitor ecosystem metabolism, structure and function. Agricultural and Forest Meteorology, 150(12):1597-1606
134. Govind, A., Chen, J.M., Margolis, H.A., Ju, W., Sonnentag, O., Giasson, M.-A. (2009) A spatially explicit hydro-ecological modeling framework (BEPS-TerrainLab V2.0): Model description and test in a boreal ecosystem in Eastern North America. Journal of Hydrology, 367(3-4):200-216
135. Govind, A., Chen, J.M., Margolis, H., Ju, W., Sonnentag, O., Giasson, M.-A. (2009) A spatially explicit hydro-ecological modeling framework (BEPS-TerrainLab V2.0): Model description and test in a boreal ecosystem in Eastern North America. Journal of Hydrology, 367(3-4):200-216
136. Sonnentag, O., Chen, J.M., Roulet, N.T., Ju, W., Govind, A. (2008) Spatially explicit simulation of peatland hydrology and carbon dioxide exchage: Influence of mesoscale topography. Journal of Geophysical Research: Biogeosciences, 113(2)
137. Sonnentag, O., Chen, J.M., Roberts, D.A., Talbot, J., Halligan, K.Q., Govind, A. (2008) Corrigendum to "Mapping tree and shrub leaf area indices in an ombrotrophic peatland through multiple endmember spectral unmixing" [Remote Sensing of Environment, 109: 342-360] (DOI:10.1016/j.rse.2007.01.010). Remote Sensing of Environment, 112(7):3295
138. Sonnentag, O., Talbot, J., Chen, J.M., Roulet, N.T. (2007) Using direct and indirect measurements of leaf area index to characterize the shrub canopy in an ombrotrophic peatland. Agricultural and Forest Meteorology, 144(3-4):200-212
139. Sonnentag, O., Chen, J.M., Roberts, D.A., Talbot, J., Halligan, K.Q., Govind, A. (2007) Mapping tree and shrub leaf area indices in an ombrotrophic peatland through multiple endmember spectral unmixing. Remote Sensing of Environment, 109(3):342-360
140. Chen, J.M., Govind, A., Sonnentag, O., Zhang, Y., Barr, A., Amiro, B. (2006) Leaf area index measurements at Fluxnet-Canada forest sites. Agricultural and Forest Meteorology, 140(1-4):257-268

Articles publiés dans des actes de colloque (proceedings)

1. Roy, A., Toose, P., Mavrovic, A., Pappas, C., Berg, A., Rowlandson, T., Derksen, C., Royer, A., El-Amine, M., Helgason, W. et al. (2018) Use of L-band ground-based radiometers for freeze/thaw retrieval in a boreal forest site. In International Geoscience and Remote Sensing Symposium (IGARSS). Pages 9042-9044
2. Pisek, J., Buddenbaum, H., Camacho, F., Hill, J., Jensen, J.L.R., Lange, H., Liu, Z., Piayda, A., Qu, Y., Roupsard, O. et al. (2018) Application of photon recollision probability theory for compatibility check between foliage clumping and leaf area index products obtained from earth observation data. In International Geoscience and Remote Sensing Symposium (IGARSS). Pages 5918-5920
3. Roy, A., Royer, A., Derksen, C., Langlois, A., Sonnentag, O. (2016) Monitoring boreal and arctic freeze/thaw with the first year of SMAP brightness temperatures. In 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, MicroRad 2016 - Proceedings. Pages 82-84
4. Roy, A., Toose, P., Derksen, C., Royer, A., Mavrovic, A., Berg, A.A., Arnold, L., Willamson, M., Rowlandson, T., Lemmetyinen, J. et al. (2016) Analysis of L-Band brightness temperatures response to freeze/thaw in two prairie environments from surface-based radiometer measurements. In International Geoscience and Remote Sensing Symposium (IGARSS). Pages 1667-1670

Rapports scientifiques, manuels et autres

1. Op de Beeck, M., Gielen, B., Merbold, L., Sonnentag, O. (2016) Ancillary vegetation measurements in grasslands. Technical report, Integrated Carbon Observation System Ecosystem Thematic Centre, Helsinki, Finland.

Thèses, mémoires et essais

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Thèses, mémoires et essais supervisés

1. Gauthier, C. (2023) Optimisation des paramètres de carbone de sol dans le modèle CLASSIC à l'aide d'optimisation bayésienne et d'observations. Mémoire de maîtrise, Université de Montréal
2. Graveline, V. (2023) Surface-atmosphere energy exchanges and their effects on surface climate and boundary layer dynamics in the forest-tundra ecotone in northwestern Canada. Mémoire de maîtrise, Université de Montréal
3. Perron, N.S. (2023) Variability in tree-water relations from tree-line to tree-line in Canada's western boreal forest. Thèse de doctorat, Université de Montréal
4. El-Amine, M. (2020) Contrôles environnementaux de la variabilité interannuelle de la reprise et de la fin de la photosynthèse au sein de la forêt boréale nord-américaine. Mémoire de maîtrise, Université de Montréal
5. Helbig, M. (2017) Thawing permafrost and land-atmosphere interactions of boreal forest-wetland landscapes in northwestern Canada. Thèse de doctorat, Université de Montréal
6. Payette, F. (2015) Échanges d’énergie et d’eau des écosystèmes nordiques dans un contexte de changement climatique. Mémoire de maîtrise, Université de Montréal
7. Higgins, K.L. (2015) Effet de la végétation sur la variabilité de la profondeur de dégel à petite échelle dans un paysage de tourbières en forêt boréale dans les Territoires du Nord-Ouest. Mémoire de maîtrise, Université de Montréal

Articles non révisés par un comité de lecture

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