Dalhousie University, BSc, Honours
Dalhousie University, MES
University of Toronto, 1987, PhD


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.


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,

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,



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,

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,

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,



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,

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,

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,



BJORKMAN, A. D., ELMENDORF, S. C., BEAMISH, A. L., VELLEND, M. and HENRY, G. H. R. 2015 ‘Contrasting effects of warming and increased snowfall on Arctic tundra plant phenology over the past two decades’ Global Change Biology 21(12), 4651-4661,

ELMENDORF, S. C., HENRY, G. H. R., HOLLISTER, R. D., FOSAA, A. M., GOULD, W. A., HERMANUTZ, L., HOFGAARD, A., JÓNSDÓTTIRI, I., JORGENSON, J. C., LÉVESQUE, E., MAGNUSSON, B., MOLAU, U., MYERS-SMITH, I. H., OBERBAUER, S. F., RIXEN, C., TWEEDIE, C. E. and WALKER, M. 2015 ‘Experiment, monitoring, and gradient methods used to infer climate change effects on plant communities yield consistent patterns’ Proceedings of the National Academy of Sciences of the United States of America 112(2), 448-452



BOULANGER-LAPOINTE, N., LÉVESQUE, E., BOUDREAU, S., HENRY, G. H. R. and SCHMIDT, N. M. 2014 ‘Population structure and dynamics of Arctic willow (Salix arctica) in the High Arctic’ Journal of Biogeography 41(10), 1967-1978,




Winter 2018

GEOB307 Biogeography and Global Change Sections

Biogeographic concepts in understanding responses in ecosystems to environmental change at global, regional, and local scales. Conservation issues such as the loss of biodiversity and endangered species.

Winter 2018

GEOB500 Contemporary Research Trends in Physical Geography Sections

Winter 2018

GEOB505 Permafrost Sections

Winter 2018

GEOG311 Urban Environments Sections

The impact of urban development on the natural environment and vice versa. Study of the ecology and metabolism of cities and green urban design, using global and local case studies.

Winter 2018

GEOG497 The Arctic Sections

Physical and biological characteristics of the circumpolar Arctic, emphasizing terrestrial environments and the impacts on and by humans, including: glacial history; climatology; biogeography/ecology of arctic tundra; human-environment interactions, settlement and exploration; and current environmental, social and economic problems.