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Nigel T. Roulet


Membre régulier

Département de géographie, Université McGill

McGill University, 805 Sherbrook Street West
Université McGill
Québec, Canada
H3A 2K6





Étudiants / Chercheurs postdoctoraux au CEN

Harder, Silvie (Doctorat). Les flux de carbone et d’énergie dans un pergélisol spatialement hétérogène.


Thèses et mémoires récents

Wang, Zheng , 2017 (Doctorat). Le changement des flux de carbone de l'écosystème avec le dégel du permafrost: facteurs dominants et mécanismes biogéochimiques dans une tourbe subarctique.


Communications scientifiques

Harris, L.I., Moore, T.R., Roulet, N.T., Pinsonneault, A.J., 2018. Lichens: A limit to peat growth? Journal of Ecology(published online first). DOI: 10.1111/1365-2745.12975.

Malhorta, A., Moore, T.R., Limpens, J., Roulet, N.T., 2018. Post-thaw variability in litter decomposition best explained by microtopography at an ice-rich permafrost peatland. Arctic, Antarctic, and Alpine Research, 50(1): e1415622.

Moomaw, W.R., Chmura, G.L., Davies, G.T., Finlayson, C.M., Middleton, B.A., Natali, S.M., Perry, J.E., Roulet, N.T., Sutton-Grier, A.E., 2018. Wetlands in a changing climate: science, policy and management. Wetlands(published online first). DOI: 10.1007/s13157-018-1023-8.

Goud, E.M., Moore, T.R., Roulet, N.T., 2017. Predicting peatland carbon fluxes from non-destructive plant traits. Functional Ecology, 31(9): 1824-1833. DOI: 10.1111/1365-2435.12891.

Wang, W., Roulet, N.T., 2017. Comparison of plant litter and peat decomposition changes with permafrost thaw in a subarctic peatland. Plant and Soil, 417: 197-216. DOI: 10.1007/s11104-017-3252-7.

Kim, Y., Roulet, N.T., Li, C., Frolking, S., Strachan, I.B., Peng, C., Teodoru, C.R., Prairie, Y.T., Tremblay, A., 2016. Simulating carbon dioxide exchange in boreal ecosystems flooded by reservoirs. Ecological Modelling, 327: 1-17. DOI: 10.1016/j.ecolmodel.2016.01.006.

Kross, A., Seaquist, J.W., Roulet, N.T., 2016. Light use efficiency of peatlands: Variability and suitability for modeling ecosystem production. Remote Sensing of Environment, 183: 239–249. DOI: 10.1016/j.rse.2016.05.004.

Malhorta, A., Roulet, N.T., Wilson, P., Giroux‐Bougard, X., Harris, L.I., 2016. Ecohydrological feedbacks in peatlands: an empirical test of the relationship among vegetation, microtopography and water table. Ecohydrology, 9(7): 1346-1357. DOI: 10.1002/eco.1731.

Meng, L., Roulet, N.T., Zhuang, Q., Christensen, T.R., Frolking, S., 2016. Focus on the impact of climate change on wetland ecosystems and carbon dynamics. Environmental Research Letters, 11(10): 100201. DOI: 10.1088/1748-9326/11/10/100201.

Pinsonneault, A.J., Moore, T.R., Roulet, N.T., 2016. Effects of long-term fertilization on peat stoichiometry and associated microbial enzyme activity in an ombrotrophic bog. Biogeochemistry, 129(1): 149-164. DOI: 10.1007/s10533-016-0224-6.

Pinsonneault, A.J., Moore, T.R., Roulet, N.T., 2016. Temperature the dominant control on the enzyme-latch across a range of temperate peatland types. Soil Biology & Biochemistry, 97: 121-130. DOI: 10.1016/j.soilbio.2016.03.006.

Pinsonneault, A.J., Moore, T.R., Roulet, N.T., Lapierre, J.-F., 2016. Biodegradability of vegetation derived dissolved organic carbon in a cool temperate ombrotrophic bog. Ecosystems, 19(6): 1023-1036. DOI: 10.1007/s10021-016-9984-z.

Wang, W., Roulet, N.T., Strachan, I.B., Tremblay, A., 2016. Modeling surface energy fluxes and thermal dynamics of a seasonally ice-covered hydroelectric reservoir. Science of the Total Environment, 550: 793-805. DOI: 10.1016/j.scitotenv.2016.01.101.

Goodrich, J.P., Campbell, D.I., Roulet, N.T., Clearwater, M.J., Shipper, L.A., 2015. Overriding control of methane flux temporal variability by water table dynamics in a Southern Hemisphere, raised bog. Journal of Geophysical Research - Biogeosciences, 120(5): 819-831. DOI: 10.1002/2014JG002844.

Kim, Y., Ullah, S., Roulet, N.T., Moore, T.R., 2015. Effect of inundation, oxygen and temperature on carbon mineralization in boreal ecosystems. Science of the Total Environment, 511: 381-392. DOI: 10.1016/j.scitotenv.2014.12.065.

Pelletier, L., Strachan, I.B., Roulet, N.T., Garneau, M., 2015. Can boreal peatlands with pools be net sinks for CO2? Environmental Research Letters, 10: 035002. DOI: 10.1088/1748-9326/10/3/035002.

Pelletier, L., Strachan, I.B., Roulet, N.T., Garneau, M., Wischnewski, K., 2015. Effect of open water pools on ecosystem scale surface-atmosphere carbon dioxide exchange in a boreal peatland. Biogeochemistry, 124(1): 291-304. DOI: 10.1007/s10533-015-0098-z.

Petrescu, A.M.R., Lohila, A., Tuovinen, J.-P., Baldocchi, D.D., Desai, A.R., Roulet, N.T., Vesala, T., Dolman, A.J., Oechel, W.C., Marcolla, B., Friborg, T., Rinne, J., Matthes, J.H., Merbold, L., Meijide, A., Kiely, G., Sottocornola, M., Sachs, T., Zona, D., Varlagin, A., Lai, D.Y.F., Veenendaal, E., Parmentier, F.-J.W., Skiba, U., Lund, M., Hensen, A., van Huissteden, J., Flanagan, L.B., Shurpali, N.J., Grünwald, T., Humphreys, E.R., Jackowicz-Korczynski, M., Aurela, M.A., Laurila, T., Grüning, C., Corradi, C.A.R., Schrier-Uijl, A.P., Christensen, T.R., Tamstorf, M.P., Mastepanov, M., Martikainen, P.J., Verma, S.B., Bernhofer, C., Cescatti, A., 2015. The uncertain climate footprint of wetlands under human pressure. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 112(15): 4594-4599. DOI: 10.1073/pnas.1416267112.

Bridgham, S.D., Moore, T.R., Richardson, C.J., Roulet, N.T., 2014. Errors in greenhouse forcing and soil carbon sequestration estimates in freshwater wetlands: a comment on Mitsch et al. (2013). Landscape Ecology, 29(9): 1481-1485. DOI: 10.1007/s10980-014-0067-2.

Brown, M.G., Humphreys, E.R., Moore, T.R., Roulet, N.T., Lafleur, P.M., 2014. Evidence for a nonmonotonic relationship between ecosystem-scale peatland methane emissions and water table depth. Journal of Geophysical Research - Biogeosciences, 119(5): 826-835. DOI: 10.1002/2013JG002576.

Kim, Y., Roulet, N.T., Peng, C., Li, C., Frolking, S., Strachan, I.B., 2014. Multi-year carbon dioxide flux simulations for mature Canadian black spruce forests and ombrotrophic bogs using Forest-DNDC. Boreal Environment Research, 19(5-6): 417-440.

Kim, Y., Ullah, S., Moore, T.R., Roulet, N.T., 2014. Dissolved organic carbon and total dissolved nitrogen production by boreal soils and litter: the role of flooding, oxygen concentration, and temperature. Biogeochemistry, 118(1-3): 35-48. DOI: 10.1007/s10533-013-9903-8.

Kross, A., Roulet, N.T., Moore, T.R., Lafleur, P.M., Humphreys, E.R., Seaquist, J.W., Flanagan, L.B., Aurela, M., 2014. Phenology and its role in carbon dioxide exchange processes in northern peatlands. Journal of Geophysical Research - Biogeosciences, 119(7): 1370-1384. DOI: 10.1002/2014JG002666.

Lai, D.Y.F., Moore, T.R., Roulet, N.T., 2014. Spatial and temporal variations of methane flux measured by autochambers in a temperate ombrotrophic peatland. Journal of Geophysical Research - Biogeosciences, 119(5): 864-880. DOI: 10.1002/2013JG002410.

Lai, D.Y.F., Moore, T.R., Roulet, N.T., 2014. The spatial and temporal relationships between CO2 and CH4 exchange in a temperate ombrotrophic bog. Atmospheric Environment, 89: 249-259. DOI: 10.1016/j.atmosenv.2014.02.034.

Olefeldt, D., Roulet, N.T., 2014. Permafrost conditions in peatlands regulate magnitude, timing, and chemical composition of catchment dissolved organic carbon export. Global Change Biology, 20(10): 3122–3136. DOI: 10.1111/gcb.12607.

Pelletier, L., Strachan, I.B., Garneau, M., Roulet, N.T., 2014. Carbon release from boreal peatland open water pools: Implication for the contemporary C exchange. Journal of Geophysical Research - Biogeosciences, 119(3): 207-222. DOI: 10.1002/2013JG002423.

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. DOI: 10.1139/cjb-2013-0319.

Wu, J., Roulet, N.T., 2014. Climate change reduces the capacity of northern peatlands to absorb the atmospheric carbon dioxide: The different responses of bogs and fens. Global Biogeochemical Cycles, 28(10): 1005-1024. DOI: 10.1002/2014GB004845.

Coomes, O.T., Moore, T., Paterson, J., Breau, S., Ross, N.A., Roulet, N.T., 2013. Academic performance indicators for Departments of Geography in the United States and Canada. The Professional Geographer, 65(3): 433-450. DOI: 10.1080/00330124.2012.697798.

Kopp, B.J., Fleckenstein, J.H., Roulet, N.T., Humphreys, E.R., Talbot, J., Blodau, C., 2013. Impact of long-term drainage on summer groundwater flow patterns in the Mer Bleue peatland, Ontario, Canada. Hydrology and Earth System Sciences, 17: 3485-3498. DOI: 10.5194/hess-17-3485-2013.

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. DOI: 10.1016/j.rse.2013.06.014.

Olefeldt, D., Roulet, N.T., Giesler, R., Persson, A., 2013. Total waterborne carbon export and DOC composition from ten nested subarctic peatland catchments - importance of peatland cover, groundwater influence, and inter-annual variability of precipitation patterns. Hydrological Processes, 27(16): 2280-2294. DOI: 10.1002/hyp.9358.

Wu, J., Roulet, N.T., Sagerfors, J., Nilsson, M.B., 2013. Simulation of six years of carbon fluxes for a sedge-dominated oligotrophic minerogenic peatland in Northern Sweden using the McGill Wetland Model (MWM). Journal of Geophysical Research - Biogeosciences, 118(2): 795-807. DOI: 10.1002/jgrg.20045.

Basiliko, N., Stewart, H., Roulet, N.T., Moore, T.R., 2012. Do root exudates enhance peat decomposition? Geomicrobiology Journal, 29(4): 374-378. DOI: 10.1080/01490451.2011.568272.

Lai, D.Y.F., Roulet, N.T., Humphreys, E.R., Moore, T.R., Dalva, M., 2012. The effect of atmospheric turbulence and chamber deployment period on autochamber CO2 and CH4 flux measurements in an ombrotrophic peatland. Biogeosciences, 9: 3305-3322. DOI: 10.5194/bg-9-3305-2012.

Olefeldt, D., Roulet, N.T., 2012. Effects of permafrost and hydrology on the composition and transport of dissolved organic carbon (DOC) in a subarctic peatland complex. Journal of Geophysical Research - Biogeosciences, 117(G1): G01005. DOI: 10.1029/2011JG001819.

Olefeldt, D., Roulet, N.T., Bergeron, O., Crill, P., Bäckstrand, K., Christensen, T.R., 2012. Net carbon accumulation of a high-latitude permafrost palsa mire similar to permafrost-free peatlands. Geophysical Research Letters, 39: L03501. DOI: 10.1029/2011GL050355.

Schaefer, K., Schwalm, C.R., Williams, C., Arain, M.A., Barr, A., Chen, J.M., Davis, K.J., Dimitrov, D., Hilton, T.W., Hollinger, D.Y., Humphreys, E., Poulter, B., Raczka, B.M., Richardson, A.D., Sahoo, A., Thornton, P., Vargas, R., Verbeeck, H., Anderson, R., Baker, I., Black, T.A., Bolstad, P., Chen, J., Curtis, P.S., Desai, A.R., Dietze, M., Dragoni, D., Gough, C., Grant, R.F., Gu, L., Jain, A., Kucharik, C., Law, B., Liu, S., Lokipitiya, E., Margolis, H.A., Matamala, R., McCaughey, J.H., Monson, R., Munger, J.W., Oechel, W., Peng, C., Price, D.T., Ricciuto, D., Riley, W.J., Roulet, N.T., Tian, H., Tonitto, C., Torn, M., Weng, E., Zhou, X., 2012. A model-data comparison of gross primary productivity: Results from the North American Carbon Program site synthesis. Journal of Geophysical Research - Biogeosciences, 117(G03010). DOI: 10.1029/2012JG001960.

Segura, C., James, A.L., Lazzati, D., Roulet, N.T., 2012. Scaling relationships for event water contributions and transit times in small-forested catchments in Eastern Quebec. Water Resources Research, 48(7): W07502. DOI: 10.1029/2012WR011890.

Teodoru, C.R., Bastien, J., Bonneville, M.-C., del Giorgio, P.A., Demarty, M., Garneau, M., Hélie, J.-F., Pelletier, L., Prairie, Y.T., Roulet, N.T., Strachan, I.B., Tremblay, A., 2012. The net carbon footprint of a newly created boreal hydroelectric reservoir. Global Biogeochemical Cycles, 26: GB2016. DOI: 10.1029/2011GB004187.

Wu, J., Roulet, N.T., Nilsson, M.B., Lafleur, P., Humphreys, E., 2012. Simulating the carbon cycling of northern peatlands using a land surface scheme coupled to a wetland carbon model (CLASS3W-MWM). Atmosphere-Ocean, 50(4): 487-506. DOI: 10.1080/07055900.2012.730980.

Wu, J., Roulet, N.T., Moore, T.R., Lafleur, P., Humphreys, E., 2011. Dealing with microtopography of an ombrotrophic bog for simulating ecosystem-level CO2 exchanges. Ecological Modelling, 222(4): 1038-1047. DOI: 10.1016/j.ecolmodel.2010.07.015.

McEnroe, N.A., Roulet, N.T., Moore, T., Garneau, M., 2009. Do pool surface area and depth control CO2 and CH4 fluxes from an ombrotrophic raised bog, James Bay, Canada? Journal of Geophysical Research, 114(G01001). DOI: 10.1029/2007JG000639.

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