ABOUT THE ALASKA
SCIENCE CENTER

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SCIENCE OFFICES

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CONFERENCES

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OTHER ALASKA AREA
SCIENCE OFFICES

• • U.S. Volcanoes and Current Activity Alerts
  • Alaska Volcano Observatory

Education and/or Training

M.S.	1993	University of Montana, Missoula, MT	Zoology
B.S.	1985	University of Montana, Missoula, MT	Wildlife Biology

Areas of Specialization and/or Research Interests

Conservation genetics of North American salmon and trout.

Professional Experience

1996 - Present	Research Geneticist, USGS, Alaska Science Center, Anchorage, Alaska
1989 -1995	Research Assistant, University of Montana, Missoula, Montana
1986 - 1988	Fisheries Field Worker, Montana Department of Fish, Wildlife, and Parks, Kalispell, Montana

Professional Activities and/or Memberships

Present:
American Fisheries Society
Alaska Chapter American Fisheries Society
Past:
Montana Chapter American Fisheries Society

Significant Recent Publications

White, C. M., S. A. Sonsthagen, S. L. Talbot, G. K. Sage, C. M. Anderson, T. Maechtle, and J. Longmire. 2013. Genetic relationships among some subspecies of Peregrine Falcon (Falco peregrinus L.), inferred from mitochondrial DNA control region sequences. Auk. 130:1-10.

Sonsthagen, S. A., G. K. Sage, M. Fowler, A. G. Hope, J. A. Cook, and S. L.Talbot. 2012. Development and characterization of 21 polymorphic microsatellite markers for the barren-ground shrew, Sorex ugyunak (Mammalia: Sorcidae), through next-generation sequencing, and cross-species amplification in the masked shrew, S. cinereus. Conservation Genetics Resources, doi: 10.1007/s12686-012-9792-5.

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

Dial C. R. S. L. Talbot, G. K. Sage, M. T. Seidensticke and D. W. Holt. 2012. Cross-species amplification of microsatellite markers in the Great Horned Owl Bubo virginianus, Short-eared Owl Asio flammeus and Snowy Owl B. scandiacus for use in population genetics, individual identification and parentage studies. Yamashina Institute for Ornithology 44:1–12.

Miller, W., S. C. Schuster, A. J. Welch, A. Ratan, O. C. Bedoya-Reina, F. Zhao, H. Lim Kim, R. C. Burhans, D. I. Drautz, N. E. Wittekindt, L. P. Tomsho, E. Ibarra-Laclette, L. Herrera-Estrella, E. Peacock, S. Farley, G. K. Sage, K. Rode, M. Obbard, R. Montiel, L. Bachmann, Ó. Ingólfsson, J. Aars, T. Mailund, Ø. Wiig, S. L. Talbot, and C. Lindqvist. 2012. Polar and brown bear genomes reveal ancient admixture and demographic footprints of past climate change. Proceedings of the National Academy of Sciences of the United States of America. doi: 10.1073/pnas.1210506109

Roffler, G. H., L. G. Adams, S. L. Talbot, G. K. Sage, and B. W. Dale. 2012. Range overlap and individual movements during breeding season influence genetic relationships of caribou herds in southcentral Alaska. Journal of Mammology, In Press.

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

Gangoso, L., M. Alcaide, J. M. Grande, J. Munoz, S. L. Talbot, S. A. Sonsthagen, G. K. Sage, and J. Figuerola. 2012. Colonizing the world in spite of reduced MHC variation. Journal of Evolutionary Biology, 25(7):1438-1447. doi: 10.1111/j.1420-9101.2012.02529.x

Sonsthagen, S. A., T. J. Coonan, B. C. Latta, G. K. Sage, and S. L. Talbot. 2012. Effect of a recent colonization on genetic diversity of a territorial raptor the Golden Eagle. Biological Conservation 146:116-122.doi: 10.1016/j.biocon.2011.11.031

Sonsthagen, S. A., E. L. McClaren, F. I. Doyle, K. Titus, G. K. Sage, R. E. Wilson, J. R. Gust, and S. L. Talbot. 2012. Identification of metapopulation dynamics in Northern Goshawk of the Alexander Archipelago and coastal British Columbia. Conservation Genetics, 13:1045-1057. doi: 10.1007/s10592-012-0352-z

Williams, I., B. M. Guzzetti, J. R. Gust, G. K. Sage, R. E. Gill Jr., T. L. Tibbitts, S. A. Sonsthagen, and S.L. Talbot. 2012. Polymorphic microsatellite loci identified through development and cross-species amplification within shorebirds. Journal of Ornithology. 153:593-601. doi: 10.1007/s10336-011-0811-1

Booms, T. L., S. L. Talbot, G. K. Sage, B. J. McCaffery, K. G. McCracken, and P. L. Schempf. 2011. Nest-site fidelity and dispersal of gyrfalcons estimated by noninvasive genetic sampling. Condor 113:768-778.

Scribner, K. Y., G. K. Sage, C. Soiseth, L. Thorsteinson, E. Knudsen and J. L. Nielsen. submitted. Coho salmon colonization in recently deglaciated streams in Glacier Bay, Alaska. Journal of Fish Biology.

K. M. Ramstad, C. A. Woody, G. K. Sage, and F. W. Allendorf. 2004. Founding events influence genetic population structure of sockeye salmon (Oncorhynchus nerka) in Lake Clark, Alaska. Molecular Ecology 13:277-290.

Nielsen, J. L., I. Williams, G. K. Sage, and C. E. Zimmerman. 2003. The importance of genetic verification for determination of Atlantic salmon in north Pacific waters. Journal of Fish Biology. 62:871-878.

Nielsen, J. L., G. K. Sage, S. Pavey, R. Valenzuela and T. Wiacek. 2003. Hatchery and wild steelhead genetics in Idaho: Report #1: Dworshak Hatchery stocks in the Clearwater drainage. Technical Report submitted to Idaho Fish and Game April, 2003.

Nielsen, J. L. and G. K. Sage. 2002. Microsatellite analyses of San Mateo Creek trout, 2001. Technical Report submitted to US Department of Defense, Camp Pendleton, CA. January 14, 2002.

Nielsen, J. L. and G. K. Sage. 2002. Population genetic structure in Lahontan cutthroat trout. Transactions of the American Fisheries Society 131:376-388.

Nielsen, J. L. and G. K. Sage. 2002. Genetic analysis of temporal spawning populations of Lahontan cutthroat (Oncorhynchus clarki henshawi) from Pyramid Lake. Bailey Environmental Consulting 11pp..

Nielsen, J. L. and G. K. Sage. 2002. Microsatellite sequence reveals significant haplotype diversity in Central Valley chinook stocks. Final technical report submiitted to California Department of Fish and Game June 2002.

Nielsen, J. L. and K. Sage. 2001. Microsatellite analyses of the trout of Northwest Mexico. Genetica 111(1-3):269-278.