Annika Walters


me.JPGAnnika has been the Assistant Unit Leader for Fisheries at the WY coop unit since summer 2011. She is an applied aquatic ecologist with broad research interests in population and community ecology, fisheries, and conservation biology. Much of her research explores the resistance and resilience of aquatic communities to disturbance. For her PhD research she explored the impact of low flow disturbance on fish, crayfish, and aquatic insect communities in Connecticut. Her postdoctoral work at the Northwest Fisheries Science Center focused on water diversion and climate change impacts for juvenile Chinook salmon. Other research projects have explored nutrient loading by anadromous alewife, phytoplankton phenology, and how to incorporate climate change into Endangered Species Act consultations. 




Ph.D., Ecology and Evolutionary Biology, Yale University, New Haven, CT
Thesis: Community and ecosystem level impacts of disturbance in streams


M.S., Yale University, New Haven, CT

2002 B.A., Princeton University, Princeton, NJ

Professional appointments

2011 - present Assistant Professor, Department of Zoology and Physiology, University of Wyoming
2011 - present Assistant Unit Leader - Fisheries, USGS Wyoming Cooperative Fish and Wildlife Unit
2011 NSF Bioinformatics Postdoctoral Fellow, School of Aquatic and Fishery Sciences, Univeristy of Washington, Seattle

2009-2010 NRC Postdoctoral Research Associate, NOAA Northwest Fisheries Science Center, Seattle, Washington


Walters, A.W., K.K. Bartz, and M.M. McClure. 2013. Interactive effects of water diversion and climate change for juvenile Chinook salmon in the Lemhi River. Conservation Biology 27:1179-1189.

Walters, A.W., M.A.G. Sagrario, and D.E. Schindler. 2013. Species and community level responses combine to drive phenology of lake phytoplankton. Ecology 94:2188-2194.

Walters, A.W., T. Copeland, and D.A. Venditti. 2013. The density dilemma: limitations on juvenile production in threatened salmon populations. Ecology of Freshwater Fish 22:508-519.

Walters, A.W., D. M. Holzer, J. R. Faulkner, C. D. Warren, P. D. Murphy, and M.M. McClure. 2012. Quantifying cumulative entrainment effects for Chinook salmon in a heavily irrigated watershed. Transactions of the American Fisheries Society 141:1180-1190.

Walters, A.W. 2011. Resistance of aquatic insects to a low flow disturbance: exploring a trait-based approach. Journal of the North American Benthological Society 30: 346-356.

Walters, A.W. and D.M. Post. 2011. How low can you go? Response of aquatic insect communities to low flow disturbance. Ecological Applications 21:163-174.

West, D., A.W. Walters, S. Gephart, D.M. Post. 2010. Nutrient loading by anadromous alewives: contemporary patterns and predictions for restoration efforts. Canadian Journal of Fisheries and Aquatic Sciences 67: 1211-1220.

Walters, A.W., R.T. Barnes, and D.M. Post. 2009. Anadromous alewife contribute marine-derived nutrients to coastal stream food webs. Canadian Journal of Fisheries and Aquatic Sciences 66:439-448.

Post D.M. and A.W. Walters. 2009. Nutrient excretion rates of anadromous alewives during their spawning migration. Transactions of the American Fisheries Society 138: 264-268

Walters, A.W. and D.M. Post. 2008. An experimental disturbance alters fish size structure, but not food chain length in streams. Ecology 89: 3261-3267