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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

Websites of Interest

Walrus Research Program


Total pubs: 37

Noren, S. R., M. S. Udevitz, and C. V. Jay. 2016. Sex-specific energetics of Pacific walruses (Odobenus rosmarus divergens) during the nursing interval. Physiological and Biochemical Zoology 89(2). doi:10.1086/685454 [Details] [Full Publication]

Fischbach, A. S., A. A. Kochnev, J. L. Garlich-Miller, and C. V. Jay. 2016. Pacific walrus coastal haulout database, 1852-2016 - Background report. USGS Open-File Report 2016-1108, 27 p. doi:10.3133/ofr20161108 [Details] [Full Publication]

Beatty, W. S., C. V. Jay, and A. S. Fischbach. 2016. An evaluation of behavior inferences from Bayesian state-space models: A case study with the Pacific walrus. Marine Mammal Science 32(4):1299-1318. doi:10.1111/mms.12332 [Details] [Full Publication]

Beatty, W. S., C. V. Jay, A. S. Fischbach, J. M. Grebmeier, R. L. Taylor, A. L. Blanchard, and S. C. Jewett. 2016. Space use of a dominant Arctic vertebrate: Effects of prey, sea ice, and land on Pacific walrus resource selection. Biological Conservation 203:25-32. doi:10.1016/j.biocon.2016.08.035 [Details] [Full Publication]

Fischbach, A. S. and C. V. Jay. 2016. A strategy for recovering continuous behavioral telemetry data from Pacific walruses. Wildlife Society Bulletin. doi:10.1002/wsb.685 [Details] [Full Publication]

Noren, S. R., M. S. Udevitz, L. Triggs, J. Paschke, L. Oland, and C. V. Jay. 2015. Identifying a reliable blubber measurement site to assess body condition in a marine mammal with topographically variable blubber, the Pacific walrus. Marine Mammal Science 31(2):658-676. doi:10.1111/mms.12186 [Details] [Full Publication]

Noren, S. R., C. V. Jay, J. M. Burns, and A. S. Fischbach. 2015. Rapid maturation of the muscle biochemistry that supports diving in Pacific walruses (Odobenus rosmarus divergens). Journal of Experimental Biology 218:3319-3329. doi:10.1242/jeb.125757 [Details] [Full Publication]

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 [Details] [Full Publication]

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 [Details] [Full Publication]

Noren, S. R., M. S. Udevitz, and C. V. Jay. 2014. Energy demands for maintenance, growth, pregnancy, and lactation of female Pacific walruses (Odobenus rosmarus divergens). Physiological and Biochemical Zoology 87(6). doi:10.1086/678237 [Details] [Full Publication]

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 [Details] [Full Publication]

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. [Details] [Full Publication]

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 [Details] [Full Publication]

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 [Details] [Full Publication]

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. doi:10.3354/meps09706 [Details] [Full Publication]

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. 2011. Results and evaluation of a survey to estimate Pacific walrus population size, 2006. Marine Mammal Science 27(3):514-553. doi:10.1111/j.1748-7692.2010.00419.x [Details] [Full Publication]

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. doi:10.1007/s00300-011-0967-4 [Details] [Full Publication]

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. doi:10.3354/meps08575 [Details] [Full Publication]

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(12):1111-1128. doi:10.1139/Z09-098 [Details] [Full Publication]

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. USGS Open-File Report 2009-1291, 10 p. [Details] [Full Publication]

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. doi:10.1007/s00300-008-0432-1 [Details] [Full Publication]

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(8):1808-1812. doi:10.2193/2007-413 [Details] [Full Publication]

Jay, C. V. and A. S. Fischbach. 2008. Pacific walrus response to Arctic sea ice losses. USGS Fact Sheet 2008-3041. [Details] [Full Publication]

Udevitz, M. S., C. V. Jay, A. S. Fischbach, and J. L. Garlich-Miller. 2007. Adjusting for telemetry bias in behavior data. Annual Meeting of the Alaska Chapter of the American Statistical Association, 24-26 July. Anchorage, AK, USA. [Details]

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. doi:10.1111/j.1748-7692.2006.00018.x [Details] [Full Publication]

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. doi:10.1111/j.1748-7692.2005.tb01211.x [Details] [Full Publication]

Bornhold, B. D., C. V. Jay, R. McConnaughey, G. Rathwell, K. Rhyna, and W. B. Collins. 2005. Walrus foraging marks on the seafloor in Bristol Bay, Alaska: a reconnaissance survey. Geo-Marine Letters 25:293-299. doi:10.1007/s00367-004-0205-y [Details] [Full Publication]

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

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. doi:10.1111/j.1748-7692.2003.tb01135.x [Details] [Full Publication]

Jay, C. V. 2002. Report of workshop on the chemical restraint of walruses held 20-22 February 2002, San Diego, California. Unpublished internal workshop report, Hosted by U.S. Geological Survey, Alaska Science Center and Hubbs - Sea World Research Institute, San Diego., 40 p. [Details]

Jay, C. V. and G. W. Garner. 2002. Performance of a satellite-linked GPS on Pacific walruses (Odobenus rosmarus divergens). Polar Biology 25(3):235-237. doi:10.1007/s00300-001-0338-7 [Details] [Full Publication]

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. doi:10.1111/j.1748-7692.2001.tb01008.x [Details] [Full Publication]

Garlich-Miller, J. L. and C. V. Jay. 2000. Proceedings of a workshop concerning walrus survey methods, Anchorage, Alaska, March 27-28, 2000. Technical Report submitted to U.S. Fish and Wildlife Service, Marine Mammals Management (MMM), Anchorage, Alaska, 92 p. [Details] [Full Publication]

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. doi:10.1111/j.1748-7692.1998.tb00765.x [Details] [Full Publication]

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(6):1203-1225. doi:10.1139/f96-055 [Details] [Full Publication]

Jay, C. V. 1993. Structure and volume of the hoki, Macruronus novaezelandiae (Merlucciidae), swimbladder. Journal of Fish Biology 43(4):633-642. doi:10.1111/j.1095-8649.1993.tb00446.x [Details] [Full Publication]

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. [Details]

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