Eric Regehr

Eric Regehr is a quantitative biologist that has spent 15 years studying the demography of terrestrial and marine wildlife populations.  He develops and applies state-of-the-art methods to estimate animal abundance and vital rates (e.g., survival and reproduction), and to understand relationships between these parameters and environmental conditions. Eric’s recent work has focused on modeling and management approaches to address the interactive effects of climate change and direct human activities (e.g., harvest) on wildlife. He is interested in primary research, and—recognizing humans as a key part of many ecosystems—in applied methods to improve conservation and find management solutions that work for both animals and people. Eric joined the Polar Science Center as a Principal Quantitative Ecologist in 2017.

You can follow Eric on Twitter @EVRegehr.

In The News

Selected Publications

  • Ware, J.V., K.D. Rode, J.F. Bromaghin, D. Douglas, R.W. Wilson, E.V. Regehr, S.C. Amstrup, G. Durner, A. Pagano, J.Olson, C.T. Robbins, and H.T. Jansen. 2017. The behavioral response of polar bears to habitat degradation in the Chukchi and Beaufort Seas. Oecologia. doi: 10.1007/s00442-017-3839-y

  • Regehr, E., R. Wilson, K. Rode, M. Runge, and H. Stern. 2017. Harvesting wildlife affected by climate change: a modeling and management framework for polar bears. Journal of Applied Ecology. doi: 10.1111/1365-2664.12864

  • Rode, K. D., S. C. Amstrup, and E. V. Regehr. 2010. Reduced body size and cub recruitment in polar bears associated with sea ice decline. Ecological Applications 20:768-782.

  • Hunter, C. M., H. Caswell, M. C. Runge, E. V. Regehr, S. C. Amstrup, and I. Stirling. 2010. Climate change threatens polar bear populations: a stochastic demographic analysis. Ecology 91:2883-2897.

  • Laidre, K.L., and E.V. Regehr. 2017. Arctic marine mammals and sea ice. Pages 516-533 in D. Thomas (Ed.), Sea Ice 3rd Edition. West Sussex, United Kingdom: John Wiley & Sons Ltd.  ISBN: 978-1-118-77838-8

  • Regehr, E.V., Laidre, K.L., Akçakaya, H.R., Amstrup, S.C., Atwood, T.C., Lunn, N.J., Obbard, M., Stern, H., Thiemann, G.W., Wiig, Ø. (2016), Conservation status of polar bears (Ursus maritimus) in relation to projected sea-ice declines. Biol. Lett. DOI: 10.1098/rsbl.2016.0556.

  • Wilson, R.R., E.V. Regehr, K.D. Rode, and M. St. Martin. 2016. Invariant polar bear habitat selection during a period of sea ice loss. Proceedings of the Royal Society B 283:20160380. DOI: 10.1098/rspb.2016.0380

  • Schliebe, S.L., B. Benter, E.V. Regehr, L. Quakenbush, J. Omelak, M. Nelson, and K. Nesvacil. 2016. Co-management of the Alaskan harvest of the Alaska-Chukotka polar bear subpopulation: How to implement a harvest quota. Wildlife Technical Bulletin ADF&G/DWC/WTB-2016-15. Alaska Department of Fish and Game, Juneau.

  • Lunn, N.J., S. Servanty, E.V. Regehr, S.J. Converse, E. Richardson, and I. Stirling. 2016. Population dynamics of an apex predator at the edge of its range – impacts of changing sea ice on polar bears in western Hudson Bay, Canada. Ecological Applications 26(5):1302-1320. DOI: 10.1890/15-1256

  • Conn, P.B., E. E. Moreland, E. V. Regehr, E. L. Richmond, F. Cameron, and P.L. Boveng. 2016. Using simulation to evaluate wildlife survey designs: polar bears and seals in the Chukchi Sea. Royal Society Open Science. doi:  10.1098/rsos.150561

  • Patyk, K.A., C. Duncan, P. Nol, C. Sonne, K. Laidre, M. Obbard, Ø. Wiig, J. Aars, E. Regehr, L.L. Gustafson, and T. Atwood. 2015. Establishing a definition of polar bear (Ursus maritimus) health: A guide to research and management activities. Science of the Total Environment 514:371-378.

  • Whiteman, J. P., H. J. Harlow, G. M. Durner, R. Anderson-Sprecher, S. E. Albeke, E. V. Regehr, S. C. Amstrup, and M. Ben-David. 2015. Summer declines in activity and body temperature offer polar bears limited energy savings. Science 349:295-298.                     DOI: 10.1126/science.aaa8623

  • Rode KD, Wilson RR, Regehr EV, St. Martin M, Douglas DC, Olson J (2015) Increased Land Use by Chukchi Sea Polar Bears in Relation to Changing Sea Ice Conditions. PLoS ONE 10(11): e0142213. doi:10.1371/journal.pone.0142213

  • Regehr, E. V., R. R. Wilson, K. D. Rode, and M. C. Runge. 2015. Resilience and risk—A demographic model to inform conservation planning for polar bears. U.S. Geological Survey Open-File Report 2015-1029, 56 p.,

  • Peacock, E., S. A. Sonsthagen, M. E. Obbard, A. Boltunov, E. V. Regehr, N. Ovsyanikov, J. Aars, S. N. Atkinson, G. K. Sage, A. G. Hope, E. Zeyl, L. Bachmann, D. Ehrich, K. T. Scribner, S. C. Amstrup, S. Belikov, E. W. Born, A. E. Derocher, I. Stirling, M. K. Taylor, O. Wiig, D. Paetkau, and S. L. Talbot. 2015. Implications of the Circumpolar Genetic Structure of Polar Bears for Their Conservation in a Rapidly Warming Arctic. Plos One 10(1): e112021. doi:10.1371/journal.pone.0112021

  • Crait, J.C., E.V. Regehr, and M. Ben-David. 2015. Indirect effects of bioinvasions in Yellowstone Lake: The response of river otters to declines in native cutthroat trout. Biological Conservation 191:596-605. doi:10.1016/j.biocon.2015.07.042

  • Bromaghin, J. F., T. L. McDonald, I. Stirling, A. E. Derocher, E. S. Richardson, E. V. Regehr, D. C. Douglas, G. M. Durner, T. Atwood, and S. C. Amstrup. 2015. Polar bear population dynamics in the southern Beaufort Sea during a period of sea ice decline. Ecological Applications 25:634-651. DOI: 10.1890/14-1129.1

  • Laidre, K. L., Stern, H., Kovacs, K. M., Lowry, L., Moore, S. E., Regehr, E. V., Ferguson, S. H., Wiig, Ø., Boveng, P., Angliss, R. P., Born, E. W., Litovka, D., Quakenbush, L., Lydersen, C., Vongraven, D. and Ugarte, F. (2015), Arctic marine mammal population status, sea ice habitat loss, and conservation recommendations for the 21st century. Conservation Biology. doi: 10.1111/cobi.12474

  • Wilson, R. R., J. S. Horne, K. D. Rode, E. V. Regehr, and G. M. Durner. 2014. Identifying polar bear resource selection patterns to inform offshore development in a dynamic and changing Arctic. Ecosphere 5(10):136.

  • Rode, K. D., Regehr, E. V., Douglas, D. C., Durner, G., Derocher, A. E., Thiemann, G. W. and Budge, S. M. (2014), Variation in the response of an Arctic top predator experiencing habitat loss: feeding and reproductive ecology of two polar bear populations. Glob Change Biol, 20: 76–88. doi:10.1111/gcb.12339

  • Stirling, I., T. L. McDonald, E. S. Richardson, E. V. Regehr, and S. C. Amstrup. 2011. Polar bear population status in the northern Beaufort Sea, Canada, 1971-2006. Ecological Applications 21:859-876.

  • Regehr, E. V., C. M. Hunter, H. Caswell, S. C. Amstrup, and I. Stirling. 2010. Survival and breeding of polar bears in the southern Beaufort Sea in relation to sea ice. Journal of Animal Ecology 79:117-127.

  • Regehr, E. V., N. J. Lunn, S. C. Amstrup, and L. Stirling. 2007. Effects of earlier sea ice breakup on survival and population size of polar bears in western Hudson Bay. Journal of Wildlife Management 71:2673-2683.