Gilles Gauthier (Scientific director)

perso_190

Alexandre-Vachon Building
Université Laval
1045 avenue de la Médecine
Québec, Canada
G1V 0A6

Phone: (418) 656-2131 ext. 5507
Email: gilles.gauthier@bio.ulaval.ca



External links
ArcticWOLVES (Arctic Wildlife Observatories Linking Vulnerable EcoSystems)
Ecological studies and Environmental monitoring

Research theme
• Reproductive strategies, demography, migration, energy balance, autoecology and trophic relations in the Greater Snow Goose.
• Effects of lemming fluctuations on predator/prey interactions between geese, raptors and foxes on Bylot Island, Nunavut.
• Growth bioenergetics in young precocial birds in relation to food quality and energy expenditure.
• The role of trophic interactions and abiotic factors in regulating avian populations: the case of the Greater Snow Goose.
• The role played by food availability and its seasonal variations in several aspects of reproduction in birds, including body condition of individuals, egg laying date, clutch size and fledging success.
• Feeding ecology of herbivores in relation to the response of plants to grazing.
• Study of survival and movements (dispersal, migration) with capture/recapture models.

CEN Students / Postdoctoral fellows
Chevallier, Clément (Ph.D. - Co-director). Demography and dynamics of an arctic foxes population on Bylot Island, Nunavut.
Juhasz, Claire-Cécile (Ph.D. - Co-director). Impact of the variability of climatic perturbation on the reproduction of breeding birds in the Arctic.
Lamarre, Jean-François (Ph.D. - Co-director). Indirect trophic links, migratory connectivity and seasonal interactions in High-Arctic nesting shorebirds.
LeTourneux, Frédéric (M.Sc.). Impact of recent liberalization of hunting regulations on population dynamics of the Greater Snow Goose.
Poirier, Mathilde (M.Sc.). Impact of physical properties of snow on the population dynamics of lemmings.
Reséndiz, Cynthia (Ph.D.). Sélection par l'avancement de la période de ponte en réponse au réchauffement climatique.
Robillard, Audrey (Ph.D.). Space use and winter movements of a toundra predator, the snowy owl (Bubo scandiacus).
Ropars, Pascale (Postdoctoral fellow - Co-director). Modelling the vulnerability of tundra ecosystems to climate change .
Seyer, Yannick (Ph.D.). Migration, reproduction and diet of an Arctic seabird, the Long-tailed Jaeger (Stercorarius longicaudus).
Slevan-Tremblay, Guillaume (M.Sc.). Effects of predation on lemmings grazing in the Canadian Arctic.

Recent CEN theses
Beardsell, Andréanne, 2016 (M.Sc.). Nesting ecology of rough-legged hawk in the High Arctic and nest vulnerability to geomorphological hazards.
Fauteux, Dominique, 2016 (Ph.D.). Direct and indirect effects of predation on lemmings in the Canadian Arctic.
Marmillot, Vincent, 2015 (M.Sc.). Effects of environmental conditions, body condition and hormonal state on the molt of Greater Snow Goose (Chen caerulescens atlantica).
Doiron, Madeleine, 2014 (Ph.D.). Impact of global warming on the plant-herbivore relationships in the Arctic.
Bilodeau, Frédéric, 2013 (Ph.D.). The effect of snow cover, food and winter predation on the population dynamics of lemmings.
Souchay, Guillaume, 2013 (Ph.D.). Application of recent developments in capture-mark-recapture models to population dynamics of the greater snow geese in Canadian Arctic.

Scientific communications
Beardsell, A., Gauthier, G., Fortier, D., Therrien, J.-F., Bêty, J.
, 2017. Vulnerability to geomorphological hazards of an arctic cliff-nesting raptor, the rough-legged hawk. Arctic Science, 3(2): 203-219. DOI: 10.1139/AS-2016-0025.
Berteaux, D., Gauthier, G., Domine, F., Ims, R.A., Lamoureux, S.F., Lévesque, E., Yoccoz, N.G.
, 2017. Effects of changing permafrost and snow conditions on tundra wildlife: critical places and times. Arctic Science, (published online first). DOI: 10.1139/as-2016-0023.
Fauteux, D., Gauthier, G., Berteaux, D., Bosson, C., Palme, R., Boonstra, R.
, 2017. Assessing stress in Arctic lemmings: fecal metabolite levels reflect plasma free corticosterone levels. Physiological and Biochemical Zoology, 90: 370-382. DOI: 10.1086/691337.
Fauteux, D., Slevan-Tremblay, G., Gauthier, G., Berteaux, D.
, 2017. Feeding preference of brown lemmings (Lemmus trimucronatus) for plant parts of Arctic willow (Salix arctica). Polar Biology. DOI: 10.1007/s00300-017-2147-7.
Robillard, A., Gauthier, G., Therrien, J.-F., Fitzgerald, G., Provencher, J.F, Bêty, J.
, 2017. Variability in stable isotopes of snowy owl feathers and contribution of marine resources to their winter diet. Journal of Avian Biology. DOI: 10.1111/jav.01257. (In press)
Barrio, I.C., Bueno, C.G., Gartzia, M., Soininen, E.M., Christie, K.S., Speed, J.D.M., Ravolainen, V.T., Forbes, B.C., Gauthier, G., Horstkotte, T., Hoset, K.S., Høye, T.T., Jónsdóttir, I.S., Lévesque, E., Mörsdorf, M.A., Olofsson, J., Wookey, P.A., Hik, D.S.
, 2016. Biotic interactions mediate patterns of herbivore diversity in the Arctic. Global Ecology and Biogeography, 25(9): 1108-1118. DOI: 10.1111/geb.12470.
Beardsell, A., Gauthier, G., Therrien, J.-F., Bêty, J.
, 2016. Nest site characteristics, patterns of nest reuse, and reproductive output in an Arctic-nesting raptor, the Rough-legged Hawk. Auk, 133(4): 718-732. DOI: 10.1642/AUK-16-54.1.
Fauteux, D., Gauthier, G., Berteaux, D.
, 2016. Top-down limitation of lemmings revealed by experimental reduction of predators. Ecology, 97(11): 3231-3241. DOI: 10.1002/ecy.1570.
Marmillot, V., Gauthier, G., Cadieux, M.-C., Legagneux, P.
, 2016. Plasticity in moult speed and timing in an arctic-nesting goose species. Journal of Avian Biology, 47(5): 650-658. DOI: 10.1111/jav.00982.
Mills, J.A., Teplitsky, C., Arroyo, B., Charmantier, A., Becker, P.H., Birkhead, T.R., Bize, P., Blumstein, D.T., Bonenfant, C., Boutin, S., Bushuev, A., Cam, E., Cockburn, A., Côté, S.D., Coulson, J.C., Daunt, F., Dingemanse, N.J., Doligez, B., Drummond, H., Espie, R.H.M., Festa-Bianchet, M., Frentiu, F., Fitzpatrick, J.W., Furness, R.W., Garant, D., Gauthier, G., Grant, P.R., Griesser, M., Gustafsson, L., Hansson, B., Harris, M.P., Jiguet, F., Kjellander, P., Korpimäki, E., Krebs, C.J., Lens, L., Linnell, J.D.C., Low, M., McAdam, A., Margalida, A., Merilä, J., Møller, A.P., Nakagawa, S., Nilsson, J.-Å., Nisbet, I.C.T., van Noordwijk, A.J., Oro, D., Pärt, T., Pelletier, F., Potti, J., Pujol, B., Réale, D., Rockwell, R.F., Ropert-Coudert, Y., Roulin, A., Sedinger, J.S., Swenson, J.E., Thébaud, C., Visser, M.E., Wanless, S., Westneat, D.F., Wilson, A.J., Zedrosser, A.
, 2016. Solutions for archiving data in long-term studies: A reply to Whitlock et al. Trends in Ecology and Evolution, 31(2): 85-87. DOI: 10.1016/j.tree.2015.12.004.
Robillard, A., Therrien, J.-F., Gauthier, G., Clark, K.M., Bêty, J.
, 2016. Pulsed resources at tundra breeding sites affect winter irruptions at temperate latitudes of a top predator, the snowy owl. Oecologia, 181(2): 423-433. DOI: 10.1007/s00442-016-3588-3.
Doiron, M., Gauthier, G., Lévesque, E.
, 2015. Trophic mismatch and its effects on the growth of young in an arctic herbivore. Global Change Biology, 21(12): 4364-4376. DOI: 10.1111/gcb.13057.
Fauteux, D., Gauthier, G., Berteaux, D.
, 2015. Seasonal demography of a cyclic lemming population in the canadian Arctic. Journal of Animal Ecology, 84(5): 1412-1422. DOI: 10.1111/1365-2656.12385.
Gagnon Lupien, N., Gauthier, G., Lavoie, C.
, 2015. Effect of the invasive common reed on the abundance, richness and diversity of birds in freshwater marshes. Animal Conservation, 18(1): 32-43. DOI: 10.1111/acv.12135.
Gauthier, G., Legagneux, P., Valiquette, M.-A., Cadieux, M.-C., Therrien, J.-F.
, 2015. Diet and reproductive success of an Arctic generalist predator: Interplay between variations in prey abundance, nest site location, and intraguild predation. The Auk: Ornithological Advances, 132: 735-747. DOI: 10.1642/AUK-14-273.1.
Mills, J.A., Teplitsky, C., Arroyo, B., Charmantier, A., Becker, P.H., Birkhead, T.R., Bize, P., Blumstein, D.T., Bonenfant, C., Boutin, S., Bushuev, A., Cam, E., Cockburn, A., Côté, S.D., Coulson, J.C., Daunt, F., Dingemanse, N.J., Doligez, B., Drummond, H., Espie, R.H.M., Festa-Bianchet, M., Frentiu, F., Fitzpatrick, J.W., Furness, R.W., Garant, D., Gauthier, G., Grant, P.R., Griesser, M., Gustafsson, L., Hansson, B., Harris, M.P., Jiguet, F., Kjellander, P., Korpimäki, E., Krebs, C.J., Lens, L., Linnell, J.D.C., Low, M., McAdam, A., Margalida, A., Merilä, J., Møller, A.P., Nakagawa, S., Nilsson, J.-Å., Nisbet, I.C.T., van Noordwijk, A.J., Oro, D., Pärt, T., Pelletier, F., Potti, J., Pujol, B., Réale, D., Rockwell, R.F., Ropert-Coudert, Y., Roulin, A., Sedinger, J.S., Swenson, J.E., Thébaud, C., Visser, M.E., Wanless, S., Westneat, D.F., Wilson, A.J., Zedrosser, A.
, 2015. Archiving primary data: Solutions for long-term studies. Trends in Ecology and Evolution, 30(10): 581-589. DOI: 10.1016/j.tree.2015.07.006.
Soininen, E.M., Gauthier, G., Bilodeau, F., Berteaux, D., Gielly, L., Taberlet, P., Gussarova, G., Bellemain, E., Hassel, K., Stenøien, H.K., Epp, L., Schrøder-Nielsen, A., Brochmann, C., Yoccoz, N.G.
, 2015. Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding. PLoS one, 10(1): e0115335. DOI: 10.1371/journal.pone.0115335.
Souchay, G., Gauthier, G., Lefebvre, J., Pradel, R.
, 2015. Absence of difference in survival between two distant breeding sites of greater snow geese. Journal of Wildlife Management, 79(4): 570-578. DOI: 10.1002/jwmg.879.
Therrien, J.-F., Gauthier, G., Robillard, A., Lecomte, N., Bêty, J.
, 2015. Écologie de la reproduction du harfang des neiges dans l'Arctique canadien. Le Naturaliste Canadien, 139(1): 17-23. DOI: 10.7202/1027666ar.
Therrien, J.-F., Pinaud, D., Gauthier, G., Lecomte, N., Bildstein, K.L., Bêty, J.
, 2015. Is pre-breeding prospecting behaviour affected by snow cover in the irruptive snowy owl? A test using state-space modelling and environmental data annotated via Movebank. Movement Ecology, 3: 1. DOI: 10.1186/s40462-015-0028-7.
Bêty, J., Graham-Sauvé, M., Legagneux, P., Cadieux, M.-C., Gauthier, G.
, 2014. Fading indirect effects in a warming arctic tundra. Current Zoology, 60(2): 189-202.
Bilodeau, F., Gauthier, G., Fauteux, D., Berteaux, D.
, 2014. Does lemming winter grazing impact vegetation in the Canadian Arctic? Polar Biology, 37(6): 845-857. DOI: 10.1007/s00300-014-1486-x.
Doiron, M., Gauthier, G., Lévesque, E.
, 2014. Effects of experimental warming on nitrogen concentration and biomass of forage plants for an arctic herbivore. Journal of Ecology, 102(2): 508-517. DOI: 10.1111/1365-2745.12213.
Julien, J.-R., Legagneux, P., Gauthier, G., Morrison, R.I.G., Therrien, J.-F., Bêty, J.
, 2014. Contribution of allochthonous resources to breeding in a high-arctic avian predator. Polar Biology, 37(2): 193-203. DOI: 10.1007/s00300-013-1423-4.
Julien, J.-R., Legagneux, P., Gauthier, G., Morrison, R.I.G., Therrien, J.-F., Bêty, J.
, 2014. Erratum to: Contribution of allochthonous resources to breeding in a high-arctic avian predator. Polar Biology, 37(8): 1219-1220. DOI: 10.1007/s00300-014-1530-x.
Legagneux, P., Gauthier, G., Lecomte, N., Schmidt, N.M., Reid, D.G., Cadieux, M.-C., Berteaux, D., Bêty, J., Krebs, C.J., Ims, R.A., Yoccoz, N.G., Morrison, R.I.G., Leroux, S.J., Loreau, M., Gravel, D.
, 2014. Arctic ecosystem structure and functioning shaped by climate and herbivore body size. Nature Climate Change, 4: 379-383. DOI: 10.1038/NCLIMATE2168.
Legagneux, P., Gauthier, G., Lecomte, N., Schmidt, N.M., Reid, D.G., Cadieux, M.-C., Berteaux, D., Bêty, J., Krebs, C.J., Ims, R.A., Yoccoz, N.G., Morrison, R.I.G., Leroux, S.J., Loreau, M., Gravel, D.
, 2014. Climate and herbivore body size determine how arctic terrestrial ecosystems work. Pages 67-69 dans Jeffries, M.O., Richter-Menge, J., Overland, J.E. (Éditeurs). Arctic Report Card 2014.
Soininen, E.M., Ehrich, D., Lecomte, N., Yoccoz, N.G., Tarroux, A., Berteaux, D., Gauthier, G., Gielly, L., Brochmann, C., Gussarova, G., Ims, R.A.
, 2014. Sources of variation in small rodent trophic niche: new insights from DNA metabarcoding and stable isotope analysis. Isotopes in Environmental and Health Studies, 50(3): 361-381. DOI: 10.1080/10256016.2014.915824.
Souchay, G., Gauthier, G., Pradel, R.
, 2014. To breed or not: a novel approach to estimate breeding propensity and potential trade-offs in an Arctic-nesting species. Ecology, 95(10): 2745–2756. DOI: 10.1890/13-1277.1.
Souchay, G., Gimenez, O., Gauthier, G., Pradel, R.
, 2014. Variations in band reporting rate and implications for kill rate in Greater Snow Geese. Avian Conservation and Ecology, 9(1): Article 1. DOI: 10.5751/ace-00628-090101.
Therrien, J.-F., Gauthier, G., Korpimäki, E., Bêty, J.
, 2014. Predation pressure by avian predators suggests summer limitation of small-mammal populations in the Canadian Arctic. Ecology, 95(1): 56-67. DOI: 10.1890/13-0458.1.
Therrien, J.-F., Gauthier, G., Pinaud, D., Bêty, J.
, 2014. Irruptive movements and breeding dispersal of snowy owls: a specialized predator exploiting a pulsed resource. Journal of Avian Biology, 45(6): 536-544. DOI: 10.1111/jav.00426.
van Oudenhove, L., Gauthier, G., Lebreton, J.-D.
, 2014. Year-round effects of climate on demographic parameters of an arctic-nesting goose species. Journal of Applied Ecology, 83(6): 1322-1333. DOI: 10.1111/1365-2656.12230.
Bilodeau, F., Gauthier, G., Berteaux, D.
, 2013. Effect of snow cover on the vulnerability of lemmings to mammalian predators in the Canadian Arctic. Journal of Mammalogy, 94(4): 813-819. DOI: 10.1644/12-MAMM-A-260.1.
Bilodeau, F., Gauthier, G., Berteaux, D.
, 2013. The effect of snow cover on lemming population cycles in the Canadian High Arctic. Oecologia, 172(4): 1007-1016. DOI: 10.1007/s00442-012-2549-8.
Bilodeau, F., Kenney, A.J., Gilbert, S.B., Hofer, E., Gauthier, G., Reid, D.G., Berteaux, D., Krebs, C.J.
, 2013. Evaluation of a technique to trap lemmings under the snow. Arctic, 66(1): 32-36.
Bilodeau, F., Reid, D.G., Gauthier, G., Krebs, C.J., Berteaux, D., Kenney, A.J.
, 2013. Demographic response of tundra small mammals to a snow fencing experiment. Oikos, 122(8): 1167–1176. DOI: 10.1111/j.1600-0706.2012.00220.x.
Doiron, M., Legagneux, P., Gauthier, G., Lévesque, E.
, 2013. Broad-scale satellite Normalized Difference Vegetation Index data predict plant biomass and peak date of nitrogen concentration in Arctic tundra vegetation. Applied Vegetation Science, 16(2): 343-351. DOI: 10.1111/j.1654-109X.2012.01219.x.
Gauthier, G., Bêty, J., Cadieux, M.-C., Legagneux, P., Doiron, M., Chevallier, C., Lai, S., Tarroux, A., Berteaux, D.
, 2013. Long-term monitoring at multiple trophic levels suggests heterogeneity in responses to climate change in the Canadian Arctic tundra. Philosophical Transactions of the Royal Society Series B, 368(1624): 20120482. DOI: 10.1098/rstb.2012.0482.
Julien, J.-R., Gauthier, G., Morrison, R.I.G., Bêty, J.
, 2013. Survival rate of the long-tailed jaeger at Alert, Ellesmere Island, Nunavut. Condor, 115(3): 543-550.
Legagneux, P., Harms, N.J., Gauthier, G., Chastel, O., Gilchrist, G., Bortolotti, G., Bêty, J., Soos, C.
, 2013. Does feather corticosterone reflect individual quality or external stress in arctic-nesting migratory birds? PLoS one, 8(12): e82644. DOI: 10.1371/journal.pone.0082644.
Legagneux, P., Simard, A.-A., Gauthier, G., Bêty, J.
, 2013. Effect of neck collars on the body condition of migrating Greater Snow Geese. Journal of Field Ornithology, 84(2): 201-209. DOI: 10.1111/jofo.12019.
McKinnon, L., Berteaux, D., Gauthier, G., Bêty, J.
, 2013. Predator-mediated interactions between preferred, alternative and incidental prey in the arctic tundra. Oikos, 122(7): 1042–1048. DOI: 10.1111/j.1600-0706.2012.20708.x.
Souchay, G., Gauthier, G., Pradel, R.
, 2013. Temporal variation of juvenile survival in a long-lived species: the role of parasites and body condition. Oecologia, 173(1): 151-160. DOI: 10.1007/s00442-013-2613-z.
Therrien, J.-F., Gauthier, G., Korpimäki, E., Bêty, J.
, 2013. Long-tailed jaegers in the canadian Arctic. Bulletin of the Ecological Society of America, 94(4): 388-388. DOI: 10.1890/0012-9623-94.4.388.

Metadata links
•  Long-term automated monitoring of year-round climatic parameters on Bylot Island, Nunavut
•  Long-term monitoring of breeding activity of avian predators on Bylot Island, Nunavut
•  Long-term monitoring of lemming abundance and reproductive activity on Bylot Island, Nunavut
•  Long-term monitoring of graminoid primary production and goose grazing impact on plant communities on Bylot Island, Nunavut
•  Long-term monitoring of breeding activity of Greater Snow Geese on Bylot Island, Nunavut
•  Long-term monitoring of breeding activity of Lapland longspur on Bylot Island, Nunavut
•  Monitoring of the relative abundance of tundra bird and mammal species encountered daily on Bylot Island, Nunavut
•  Weasel population monitoring on Bylot Island, Nunavut

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