Columbia River Fisheries Program Office
Pacific Region

Marci Koski

Marci releasing bull troutMarci currently supervises and administers the Recovery Assessment and Planning Program at CRFPO.  Her primary responsibilities include recovery planning and implementation for bull trout, providing technical assistance to other Service offices regarding aquatic trust resources, and managing CRFPO’s social media presence (i.e., Facebook).  Marci started her career with the U.S. Fish and Wildlife Service in 2006 in the Carlsbad Fish and Wildlife Office where she worked as a biologist on Section 7 consultations and Section 10 habitat conservation plans under the Endangered Species Act.  She worked with a variety of listed upland, riparian, and aquatic species including coastal California gnatcatcher, least Bell’s vireo, light-footed clapper rail, thread-leaved brodiaea, tidewater goby, southern California steelhead, arroyo toad, and the Laguna Mountains skipper.  Marci’s research background includes examining the interactive effects of changing environmental conditions (i.e., climate change and eutrophication) on the growth, behavior, and predation risk of kokanee salmon, as well as salmonid bioenergetics and foraging ecology.  Additionally, Marci worked on several projects involving the use of aquatic invertebrates to assess water quality and aquatic ecosystem health. 

Educational Background:  Ph.D., Fishery and Wildlife Biology, 2004, Colorado State University; M.S., Ecology, 2000, Colorado State University; B.S., Biology / Ecology, 1998, West Chester University of Pennsylvania

Selected Publications:

Saito, L., and Koski, M. L. 2006. Effects of spillway releases on reservoir thermal structure and kokanee growth. Journal of the American Water Resources Association 42(3):645-658. 

Johnson, B. M. and M. L. Koski. 2005. Reservoir and food web dynamics at Blue Mesa Reservoir, Colorado, 1993-2002. Final report, U.S. Bureau of Reclamation, Grand Junction, Colorado, 186 pages.

Koski, M. L. 2004. Predicting the effects of environmental change on the behavior, growth, and predation risk of juvenile kokanee salmon. Ph.D. Dissertation. Colorado State University, Fort Collins.

Koski, Marci L., Johnson, Brett M., and Stecklein, Tori.  2003. Size selectivity exhibited by kokanee (Oncorhynchus nerka) feeding on Daphnia under two light intensities.  Journal of Fish Biology 62(6): 1456-1461.

Koski, Marci L., and Johnson, Brett M. 2002. Functional response of kokanee salmon (Oncorhynchus nerka) to Daphnia at different light levels. Canadian Journal of Fisheries and Aquatic Sciences 59(4): 707-716. 

To contact Marci, please call 360.604.2500 or email

Last updated: February 14, 2013
Columbia River Fisheries Program Office
Pacific Region Fisheries Resources Home
Pacific Region Home

U.S. Fish and Wildlife Service Home Page | Department of the Interior  |  | About the U.S. Fish and Wildlife Service  | Accessibility  | Privacy  | Notices  | Disclaimer  | FOIA