I have been working to understand the consequences of environmental change, driven by the changing climate, on Arctic tundra ecosystems through long-term observations and field experiments. Studies of plant growth, phenology and reproduction, biodiversity responses, biotic interactions, evolutionary and migration potential of plant species, carbon and nutrient fluxes, and effects of permafrost disturbance form the basis of investigations by my group. We also work in Arctic communities to help northern students understand and interpret observations of environmental change by elders through shared field and class experiences and participation in science-based projects on berry producing shrub species.

2022

Skeeter, J., Christen, A., and Henry, G.H.R. 2022. Controls on carbon dioxide and methane fluxes from a low-center polygonal peatland in the Mackenzie River Delta, Northwest Territories. Arctic Science 8 (2). doi: https://doi.org/10.1139/as-2021-0034

Frei, E.R. and Henry, G.H.R. 2022. Long-term effects of snowmelt timing and climate warming on phenology, growth and reproductive effort of Arctic tundra plant species. Arctic Science. doi: https://doi.org/10.1139/as-2021-0028

Rixen, C., Høye, T.T., Macek, P., Aerts, R., Alatalo, J., Anderson, J.T., Arnold, P.A., Barrio, I.C., Bjerke, J.W., Björkman, M.P., Blok, D., Blume-Werry, G., Boike, J., Bokhorst, S., Carbognani, M., Christiansen, C.T., Convey, P., Cooper, E.J., Cornelissen, H.C., Coulson, S.J., Dorrepaal, E., Eberling, B., Elmendort, S.C., Elphinstone, C., Whittington Forte, T’.G., Frei, E.R., Geange, S.R., Gehrmann, F., Gibson, C., Grogan, P., Halbritter, A.H., Harte, J., Henry, G.H.R., Inouye, D.W., Irwin, R.E., Jspersen, G., Jónsdóttir, I.S., Jung, J.Y., Klinges, D.H., Kudo, G., Lämsä, J., Lee, H., Lembrechts, J.J., Lett, S., Lynn, J.S., Mann, H.M.R., Mastepanov, M., Morse, J., Myers-Smith, I.H., Olofsson, J., Paavola, R., Petraglia, A., Phoenix, G.K., Semenchuk, P., Siewert, M.B., Slatyer, R., Spasojevic, M., Suding, K., Sullivan, P., Thompson, K.L., Väisänen, M., Vandvik, V., Venn, S., Walz, J., Way, R., Welker, J.M., Wipf, S., Zong, S.  2022. Winters are changing: snow effects on Arctic and alpine tundra ecosystems. Arctic Science. doi: https://doi.org/10.1139/as-2020-0058

Lett, S., Jónsdóttir, I.S., Becker-Scarpitta, A., Christiansen, C.T., During, H., Flemming, E., Henry, G.H.R., Lang, S.I., Michelsen, A., Rousk, K., Alatalo, J.M., Betway, K.R., Busca, S., Callaghan, T., Carbongnani, M., Cooper, E.J., Cornelissen, H.C., Dorrepaal, E. Egelkraut, D., Elumeeva, T.G., Haugnum, S.V., Hollister, R.D., Jägerbrand, A.K., Keuper, F., Klanderud, K., Lévesque, E., Liu, X., May, J., Michel, P., Mörsdorf, M., Petraglia, A., Rixen, C., Robroek, B.J.M., Rzepczynska, A.M., Soudzilonskaia, N.A., Tolvanen, A., Vandvik, V., Volkov, I., Volkova, I., van Zuijlen, K.  2022. Can bryophyte groups increase functional resolution in tundra ecosystems? Arctic Science. doi: https://doi.org/10.1139/as-2020-0057

Prevéy, J.S., Elmendorf, S.C., Bjorkman, A.D. Alatalo, J.M., Ashton, I., Assmann, J.J., Björk, R.G., Björkman, M.P., Cannone, N., Carboganani, M., Chisholm, C., Clark, K., Collins, C.G., Cooper, E.J., Elberling, B., Frei, E.R., Henry, G.H.R., Hollister, R.D., Høye, T.T., Jónsdóttir, I.S., Kerby, J.T., Klanderud, K., Kopp, C., Lévesque, E., Mauritz, M., Molau, U., Myers-Smith, I.H., Natali, S.M., Oberbauer, S.F., Panchen, Z., Petraglia, A., Post, E., Rixen, C., Rodenhizer, H., Rumpf, S.B., Schmidt, N.M., Schurr, E., Semenchuk, P., Smith, J.G., Suding, K., Totland, Ø., Troxler, T., Wahren, H., Welker, J.M., Wipf, S., Yang, Y. 2022. The tundra phenology database: More than two decades of tundra phenology responses to climate change. Arctic Science. doi: https://doi.org/10.1139/as-2020-0041

Jeanbille, M., Clemmensen, K., Juhanson, J., Michelsen, A., Cooper, E., Henry, G., Hofgaard, A., Hollister, R.D., Jónsdóttir, I.S., Klanderud, K., Tolvanen, A., Hallin, S. 2022. Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across arctic and alpine tundra. Arctic Science. doi: https://doi.org/10.1139/as-2020-0053

2021

Panchen, Z., Frei, E.R., Henry, G.H.R. 2021. Increased Arctic climate extremes constrain expected higher plant reproductive success in a warmer climate. Arctic Science. doi: http://dx.doi.org/10.1139/as-2020-0045

Collins, C.G., Elmendorf, S.C., Hollister, R.D., Henry, G.H.R., Clark, K., Bjorkman, A.D., Myers-Smith, I.H., Prevéy, J.S., Ashton, I.W., Assmann, J.J., Alatalo, J.M., Carbongnani, M., Chisholm, C., Cooper, E.J., Forrester, C., Jónsdóttir, I.S., Klanderud, K., Kopp, C.W., Livenperger, C., Mauritz, M., May, J.L., Molau, U., Oberbauer, S.F., Ogburn, E., Panchen, Z.A., Petraglia, A., Post, E., Rixen, C., Rodenhizer, H., Schuur, E.A.G., Semenchuk, P., Smith, J.G., Steltzer, H., Totland, Ø., Walker, M.D., Welker, J.M., Suding, K.N. 2021. Experimental warming differentially affects vegetative and reproductive phenology of tundra plants. Nature Communications (2021) 12:3442.  doi: https://doi.org/10.1038/s41467-021-23841-2

Gryba, R., Huntington, H.P., Von Duyke, A.L., Adams, B., Frantz, B., Gatten, J., Harcharek, Q., Olemaun, H., Sarren, R., Skin, J., Henry, G., Auger-Méthé, M. 2021. Indigenous Knowledge of bearded seal (Erignathus barbatus), ringed seal (Pusa hipida), and spotted seal (Phoca largha) behaviour and habitat use near Utqiagvik, Alaska, USA. Arctic Science 7: 832–858. doi: https://doi.org/10.1139/as-2020-0052

2020

ELPHINSTONE, C. and HENRY, G. H. R. 2020 ‘Equitable transform applied to phenology and temperature in a changing climate: Scaling to maintain individuality’ Ecosphere 11(2) https://doi.org/10.1002/ecs2.3036

Thomas HJD, Bjorkman AD, Myers-Smith IH, Elmendorf SC, Kattge J, Vellend M, Blok D, Cornelissen JHC, Forbes BC, Henry GHR, Hollister RD, Normand S, Prévey JS, Rixen C, Schaepman-Strub G, Wilmking M, Wipf, S, Cornwell WK, Beck PSA, Georges D, Goetz SJ, Guay KC, Rüger N, Soudzilovskaia NA, Spasojevic MJ, Alatalo JM, Alexander HD, Anadon-Rosell A, Angers-Blondin S, te Beest M, Berner LT, Bjork RG, Buchwal A, Buras A, Carbonganani M, Christie KS, Collier LS, Cooper EJ, Eberling B, Eskelinen A, Frei ER, Grau O, Grogan P, Hallinger M, Heijmans MMPD, Hermanutz L, Hudson JMG, Johnstone JF, Hülber K, Iturrate-Garcia M, Iversen CM, Jaroszynska F, Kaarlejarvi E, Kulonen A, Lamarque LJ, Lantz T, Lévesque E, Little CJ, Michelsen A, Milbau A, Nabe-Nielsen J, Nielsen SS, Ninot JM, Oberbauer SF, Olofsson J, Onipchenko VG, Petraglia A, Rumpf SB, Shetti R, Speed JDM, Sudig KN, Tape KD, Tomaselli M, Trant AJ, Treier UA, Tremblay M, Venn SE, Vowles T, Weijer S, Wookey PA, Zamin TJ, Bahn M, Blonder B, van Bodegom PM, Bond-Lamberty B, Campetella G, Cerabolini BEL, Chapin FS III, Craine JM, Dainese M, Green WA, Jansen S, Kleyer M, Manning P, Niinemets Ü, Onoda Y, Ozinga WA, Peñuelas J, Poschlod P, Reich PB, Sandel B, Schamp BS, Sheremetiev SN, de Vries FT. 2020. Global plant trait relationships extend to the climatic extremes of the tundra biome. Nature Communications 11, 1351. https://doi.org/10.1038/s41467-020-150.

BOULANGER-LAPOINTE, N., HENRY, G. H. R., LÉVESQUE, E., CUERRIER, A., DESROSIERS, S., GÉRIN-LAJOIE, J., HERMANUTZ, L. and SIEGWART COLLIER, L. 2020  ‘Climate and environmental drivers of berry productivity from the forest–tundra ecotone to the high Arctic in Canada’ Arctic Science 6(4), 529 – 544  https://cdnsciencepub.com/doi/10.1139/as-2019-0018

SKEETER, J., CHRISTEN, A., LAFORCE, A-A., HUMPHREYS, E. and HENRY, G. 2020. ‘Vegetation influence and environmental controls on greenhousegas fluxes from a drained thermokarst lake in thewestern Canadian Arctic’ Biogeosciences 17, 4421–4441  https://doi.org/10.5194/bg-17-4421-2020

2019

ASSMANN, J. J., MYERS-SMITH, I. H., PHILLIMORE, A. B., BJORKMAN, A. D., ENNOS, R. E., PREVÉY, J. S., HENRY, G. H. R., SCHMIDT, N. M. and HOLLISTER, R. D. 2019 ‘Local snow melt and temperature—but not regional sea ice—explain variation in spring phenology in coastal Arctic tundra’ Global Change Biology 25(7), 2258-2274 https://doi.org/10.1111/gcb.14639

BOULANGER-LAPOINTE, N., GÉRIN-LAJOIE, J., SIEGWART COLLIER, L., DESROSIERS, S., SPIECH, C., HENRY, G. H. R., HERMANUTZ, L., LÉVESQUE, E. and CUERRIER, A. 2019 ‘Berry Plants and Berry Picking in Inuit Nunangat: Traditions in a Changing Socio-Ecological Landscape’ Human Ecology 47(1), 81-93  https://doi.org/10.1007/s10745-018-0044-5

PREVÉY, J. S., RIXEN, C., RÜGER, N., HØYE, T. T., BJORKMAN, A. D., MYERS-SMITH, I. H., ELMENDORF, S. C., ASHTON, I. W., CANNONE, N., CHISHOLM, C. L., CLARK, K., COOPER, E. J., ELBERLING, B., FOSAA, A. M., HENRY, G. H. R., HOLLISTER, R. D., JÓNSDÓTTIR, I. S., KLANDERUD, K., KOPP, C. W., LÉVESQUE, E., MAURITZ, M., MOLAU, U., NATALI, S. M., OBERBAUER, S. F., PANCHEN, Z. A., POST, E., RUMPF, S. B., SCHMIDT, N. M., SCHUUR, E., SEMENCHUK, P. P., SMITH, J. G., SUDING, K. N., TOTLAND, Ø., TROXLER, T., VENN, S., WAHREN,  C-H, WELKER, J. M. and WIPF, S. 2019 ‘Warming shortens flowering seasons of tundra plant communities’ Nature Ecology & Evolution 3, 45-52

BROWN, C. D., DUFOUR-TREMBLAY, G., JAMESON, R. G., MAMET, S. D., TRANT, A. J., WALKER, X. J., BOUDREAU, S., HARPER, K. A., HENRY, G. H. R., HERMANUTZ, L., HOFGAARD, A., ISAEVA, L., KERSHAW, G. P. and JOHNSTONE, J. F. 2019 ‘Reproduction as a bottleneck to treeline advance across the circumarctic forest tundra ecotone’ Ecography 42(1), 137-147   https://doi.org/10.1111/ecog.03733

2018

CHRISTIANSEN, C. T., LAFRENIÉRE, M. J., HENRY, G. H. R. and GROGAN, P. 2018 ‘Long term deepened snow promotes tundra evergreen shrub growth and summertime ecosystem net CO2 gain but reduces soil carbon and nutrient pools’ Global Change Biology 24(8), 3508-3525, https://doi.org/10.1111/gcb.14084

ROBINSON, S. V. J. and HENRY, G. H. R. 2018 ‘High Arctic plants show independent responses to pollination and experimental warming’ Botany 96(6), 385-396, https://doi.org/10.1139/cjb-2017-0200

BJORKMAN, A. D., MYERS-SMITH, I., ELMENDORF, S. C. et al (125 authors, including HENRY, G. H. R.) 2018 ‘Plant functional trait change across a warming tundra biome’ Nature 562, 57-62

BJORKMAN, A. D., MYERS-SMITH, I. H., ELMENDORF, S. C., NORMAND, S., THOMAS, H. J. D.,  ALATALO, J. M., ALEXANDER, H., ANADON-ROSELL, A., ANGERS-BLONDIN, S., BAI, Y., BARUAH, G., BEEST, M. T., BERNER, L., BJÖRK, R. G., BLOK, D., BUCHWAL, A., BURAS, A. CARBOGNANI, M. CHRISTIE, K., COLLIER, L. S., COOPER, E. J., CORNELISSEN, J. H. C., DICKINSON, K., DULLINGER, S., ELBERLING, B., ESKELINEN, A., FORBES, B. C., FREI, E. R., GARCIA, M. I., GOOD, M., GRAU, O., GREEN, P., GREVE, M., GROGAN, P., HÁJEK, T., HALLINGER, M., HARPER, K. A., HEIJMANS, M. M. P. D., HENRY, G. H. R., et al. 2018 ‘Tundra Trait Team: A database of plant traits spanning the tundra biome’ Global Ecology and Biogeography 27(12), 1402-1411   https://doi.org/10.1111/geb.12821

BRUELHEIDE, H., DENGLER, J., PURSCHKE, O., LENOIR, J., JIMÉNEZ-ALFARO, B., HENNEKENS, S. M., BOTTA-DUKÁT, Z., CHYTRÝ, M., FIELD, R., JANSEN, F., KATTGE, J., PILLAR, V. D., SCHRODT, F., MAHECHA, M. D., PEET, R. K., SANDEL, B., VAN BODEGOM, B., ALTMAN, J., ALVAREZ DAVILA, E., ARFIN KHAN, M. A. S., ATTORRE, F., AUBIN, I., BARALOTO, C., BARROSO, J. C., BAUTERS, M., BERGMEIER, E., BIURRUN, I., BJORKMAN, A. D., BLONDER, B., CARNI, A., CAYUELA, L., CERŃY, T., CORNELISSEN, J. H. C., CRAVEN, D., DAINESE, M., DERROIRE, G., DE SANCTIS, M., DIAZ, S., DOLEŽAL, I., FARFAN-RIOS, W., FELDPAUSCH, T. R., FENTON, N. J., GARNIER, E., GUERIN, G. R., GUTIÉRREZ, A. G., HAIDER, S., HATTAB, T., HENRY, G. H. R., et al. 2018 ‘Global trait–environment relationships of plant communities’ Nature Ecology & Evolution 2, 1906–1917

ROBINSON, S. V. J., LOSAPIO, G. and HENRY, G. H. R. 2018 ‘Flower-power: Flower diversity is a stronger predictor of network structure than insect diversity in an Arctic plant–pollinator network’ Ecological Complexity 36, 1-6  https://doi.org/10.1016/j.ecocom.2018.04.005

WALKER, D. A., DANIËLS, F. J. A., MATVEYEVA, N. V., ŠIBÍK, J., WALKER, M. D., BREEN, A. L., DRUCKENMILLER, L. A., RAYNOLDS, M. K., BÜLTMANN, H., HENNEKENS, S., BUCHHORN, M., EPSTEIN, H. E., ERMOKHINA, K., FOSAA, A. M., HEI∂MARSSON, S., HEIM, B., JÓNSDÓTTIR, I. S., KOROLEVA, N., LÉVESQUE, E., MACKENZIE, W. H., HENRY, G. H. R., NILSEN, L., PEET, R., RAZZHIVIN, V., TALBOT, S. S., TELYATNIKOV, M. THANNHEISER, D., WEBBER, P. J. and WIRTH, L. M. 2018 ‘Circumpolar Arctic Vegetation Classification’ Phytocoenologia 48(2), 181-201   DOI: 10.1127/phyto/2017/0192

2017

CASSIDY, A. E., CHRISTEN, A. and HENRY, G. H. R. 2017 ‘Impacts of retrogressive thaw slumps on vegetation, soil and net ecosystem exchange of carbon dioxide in the Canadian High Arctic’ Arctic Science 3(2), 179-202, https://doi.org/10.1139/as-2016-0034

PRÉVEY, J., VELLEND, M., RÜGER, N., HOLLISTER, R. D., BJORKMAN, A. D., MEYERS-SMITH, I. H., ELMENDORF, S. C., CLARK, K., COOPER, E. J., ELBERLING, B., FOSAA, A. M., HENRY, G. H. R., HØYE, T., JONSDÓTTIR, I. S., KLANDERUD, K., LÉVESQUE, E., MAURITZ, M., MOLAU, U., NATALI, S. M., OBERBAUER, S. F., PANCHEN, Z., POST, E., RUMPF, S. B., SCHMIDT, N. M., SCHUUR, E. A. G., SEMENCHUK, P. R., TROXLER, T., WELKER, J. M. and RIXEN, C. 2017 ‘Greater temperature sensitivity of plant phenology at colder sites: implications for convergence across northern latitudes’ Global Change Biology 23(7), 2660-2671, https://doi.org/10.1111/gcb.13619

BJORKMAN, A. D., VELLEND, M., FREI, E. and HENRY, G. H. R. 2017 ‘Climate adaptation is not enough: warming does not facilitate success of southern tundra plant populations in the high Arctic’ Global Change Biology 23(4), 1540-1551, https://doi.org/10.1111/gcb.13417

2016

BEAMISH, A., NIJLAND, W., EDWARDS, M., COOPS, N. C. and HENRY, G. H. R. 2016 ‘Phenology and vegetation change measurements from true colour digital photography in high Arctic tundra’ Arctic Science 2(2), 33-49, https://doi.org/10.1139/as-2014-0003

CASSIDY, A. E., CHRISTEN, A. and HENRY, G. H. R. 2016 ‘The effect of permafrost disturbance on growing-season carbon-dioxide fluxes in a high Arctic tundra ecosystem’ Biogeosciences 13, 2291-2303

EDWARDS, M. E. and HENRY, G. H. R. 2016 ‘The effects of long-term experimental warming on the structure of three High Arctic plant communities’ Journal of Vegetation Science 27(5), 904-913, https://doi.org/10.1111/jvs.12417

GREYSON-GAITO, C. J., BARBOUR, M. A., RODRIQUES-CABAL, M. A., CRUTSINGER, G. M. and HENRY, G. H. R. 2016 ‘Freedom to move: Arctic caterpillar growth rate increases with access to new willows’ The Canadian Entomologist 148(6), 673-682, https://doi.org/10.4039/tce.2016.22