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Chadwick V. Jay

Title: Research Ecologist
Address: 4210 University Dr., Anchorage, AK 99508-4626
Phone: (907) 786-7414
Fax: (907) 786-7150

Image of Chadwick V. Jay

Education and/or Training

Ph.D.1996Oregon State University, Corvallis, ORFisheries Science
M.A.1985Humboldt State University, Arcata, CABiology
B.S.1981Utah State University, Logan, UTFisheries Science

Areas of Specialization and/or Research Interests

Spatial and temporal patterns of animal distributions, ecology of marine mammals, benthic ecology, anthropogenic impacts to marine resources.

Professional Experience

1994 - PresentResearch Marine Ecologist, USGS, Alaska Science Center, Anchorage, Alaska
1991 - 1994Research Assistant, Oregon State University, Corvallis, Oregon
1987 - 1990Fisheries Biologist, New Zealand Ministry of Agriculture and Fisheries, Wellington, New Zealand
1982 - 1985Principal Investigator, Humboldt State University, Arcata, California

Professional Activities and/or Memberships

Arctic Institute of North America
Society for Marine Mammalogy

Significant Recent Publications

Jay, C. V., J. M. Grebmeier, A. S. Fischbach, T. L. McDonald, L. W. Cooper, and F. Hornsby. 2014. Pacific walrus (Odobenus rosmarus divergens) resource selection in the northern Bering Sea. PLoS One 9(4):e93035. doi: 10.1371/journal.pone.0093035

Sonsthagen, S. A., K. Fales, C. V. Jay, G. K. Sage, and S. L. Talbot. 2014. Spatial variation and low diversity in the major histocompatibility complex in walrus (Odobenus rosmarus). Polar Biology 37(4):497-506. doi:10.1007/s00300-014-1450-9

Monson, D. H., M. S. Udevitz, and C. V. Jay. 2013. Estimating age ratios and size of Pacific walrus herds on coastal haulouts using video imaging. PLoS One 8(7):e69806. doi:10.1371/journal.pone.0069806

Jay, C. V., A. S. Fischbach, and A. A. Kochnev. 2012. Walrus areas of use in the Chukchi Sea during sparse sea ice cover. Marine Ecology Progress Series 468:1-13. doi: 10.3354/meps10057

Noren, S.R., M.S. Udevitz, and C.V. Jay. 2012. Bioenergetics model for estimating food requirements of female Pacific walruses (Odobenus rosmarus divergens). Marine Ecology Progress Series 460:261-275

Oakley, K. L., M. E. Whalen, D. C. Douglas, M. S. Udevitz, T. C. Atwood, and C. V. Jay. 2012. Changing Arctic Ecosystems: Polar bear and walrus response to the rapid decline in Arctic sea ice. USGS Fact Sheet 2012-3131, 4 p.

Sonsthagen, S. A., C. V. Jay, A. S. Fischbach, G. K. Sage, and S. L. Talbot. 2012. Spatial genetic structure and asymmetrical gene flow within the Pacific walrus. Journal of Mammalogy 93(6):1512-1524. doi: 10.1644/11-MAMM-A-344.1

Jay, C. V, B. G. Marcot, and D. C. Douglas. 2011. Projected status of the Pacific walrus (Odobenus rosmarus divergens) in the twenty-first century.Polar Biology 34(7):1065-1084. (Supplemental Material - 240 kb pdf)

Jay, C.V., M.S. Udevitz, R. Kwok, A.S. Fischbach, and D.C. Douglas. 2010. Divergent movements of walrus and sea ice in the northern Bering Sea. Marine Ecology Progress Series 407:293-302.

Speckman, S.G., V.I. Chernook, D.M. Burn, M.S. Udevitz, A.A. Kochnev, A.Vasilev, C.V. Jay, A. Lisovsky, A.S. Fischbach, and R.B. Benter. 2010. Results and evaluation of a survey to estimate Pacific walrus population size, 2006. Marine Mammal Science DOI: 10.1111/j.1748-7692.2010.00419.x (Russian version - 2.3 mb pdf)

Fischbach, A.S., D.H. Monson, and C.V. Jay. 2009. Enumeration of Pacific walrus carcasses on beaches of the Chukchi Sea in Alaska following a mortality event, September 2009. U.S. Geological Survey Open-File Report 2009-1291:10.

Udevitz M. S., C. V. Jay, A. S. Fischbach, and J. L. Garlich-Miller. 2009. Modeling haul-out behavior of walruses in Bering Sea ice. Canadian Journal of Zoology 87:1111-1128.

Fischbach, A. S., C. V. Jay, J. V. Jackson, L. W. Andersen, G. K. Sage, and S. L. Talbot. 2008. Molecular method for determining sex of walruses. Journal of Wildlife Management 72:1808-1812.

Jay, C. V., P. M. Outridge, and J. L. Garlich-Miller. 2008. Indication of two Pacific walrus stocks from whole tooth elemental analysis. Polar Biology 31:933-943.

Jay, C. V., M. P. Heide-Jørgensen, A. S. Fischbach, M. V. Jensen, D. F. Tessler, and A. V. Jensen. 2006. Comparison of remotely deployed satellite radio transmitters on walruses. Marine Mammal Science 22(1):226-236.

Bornhold, B. D., C. V. Jay, R. McConnaughey, G. Rathwell, K. Rhyna, and W. Collins. 2005. Walrus foraging marks on the seafloor in Bristol Bay, Alaska – a reconnaissance survey. Geo-Marine Letters 25:293-299.

Jay, C. V., and S. Hills. 2005. Movements of walruses radio-tagged in Bristol Bay, Alaska. Arctic 58(2):192-202.

Udevitz, M. S., C. V. Jay, and M. B. Cody. 2005. Observer variability in pinniped counts: Ground-based enumeration of walruses at haul-out sites. Marine Mammal Science 21(1):108-120.

Mulcahy, D. M., P. A. Tuomi, G. W. Garner, and C. V. Jay. 2003. Immobilization of free–ranging male Pacific walruses (Odobenus rosmarus divergens) with carfentanil citrate and naltrexone hydrochloride. Marine Mammal Science 19(4):846-850.

Jay, C. V., and G. W. Garner. 2002. Performance of a satellite-linked GPS on Pacific walruses (Odobenus rosmarus divergens). Polar Biology 25:235-237.

Jay, C. V., S. D. Farley, and G. W. Garner. 2001. Summer diving behavior of male walruses in Bristol Bay, Alaska. Marine Mammal Science 17(3):617-631.

Jay, C. V., T. L. Olson, G. W. Garner, and B. E. Ballachey. 1998. Response of Pacific walruses to disturbances from capture and handling activities at a haul-out in Bristol Bay, Alaska. Marine Mammal Science 14(4):819-828.

Jay, C.V. 1996. Distribution of bottom-trawl fish assemblages over the continental shelf and upper slope of the U.S. west coast, 1977-1992. Canadian Journal of Fisheries and Aquatic Sciences 53:1203-1225. doi: 10.1139/f96-055

Jay, C.V. 1993. Structure and volume of the hoki, Macruronus novaezelandiae (Merlucciidae), swimbladder. Journal of Fish Biology 43:633-642. doi:1 0.1111/j.1095-8649.1993.tb00446.x

Jay, C.V. 1989. Prevalence, size and fecundity of the parasitic isopod Argeia pugettensis on its host shrimp Crangon franciscorum. American Midland Naturalist 121(1):68-77.

Websites of Interest

Walrus Research Program

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