Cooperative Fish and Wildlife Research Units Program: Wyoming
Education, Research and Technical Assistance for Managing Our Natural Resources

Wyoming Staff Member


Annika Walters

Dr. Annika Walters

Assistant Unit Leader
Phone: (307) 766 - 5473
Email: awalters@usgs.gov
Alt. Email: annika.walters@uwyo.edu
Personal website

Education

  • Ph D Yale University 2009
  • MS Yale University 2006
  • BA Princeton University 2002

Biography

Annika joined the Wyoming unit in 2011. Prior to that Annika was a post-doctoral researcher at the Northwest Fisheries Science Center and at the University of Washington in Seattle. She has a BA in ecology and evolutionary biology from Princeton University and a MS and PhD in ecology and evolutionary biology from Yale University. Annika's research has focused on aquatic ecosystems and how these ecosystems are altered by natural and anthropogenic disturbance.

Teaching Interest

Annika currently teaches advanced fisheries management and seminars on topics of interest at University of Wyoming.

Research Interest

Annika is interested in the resistance and resilience of aquatic communities to disturbance. Her research addresses disturbances that are relevant to the conservation and management of aquatic ecosystems through a combination of field observation, experimentation, and modeling. Disturbances of interest include flow alteration, climate change, nutrient loading, invasive species, and energy development. Most of her research involves fish that are of conservation concern and is set in a management context.

Research Publications Publication Date
Zachary Hooley-Underwood, Elizabeth G. Mandeville, Paul Gerrity, Joe Deromedi, Kevin Johnson, and Annika W. Walters. 2018. Combining genetic, isotopic, and field data to better describe the influence of dams and diversions on Burbot movement in the Wind River Drainage, Wyoming. Transactions of the American Fisheries Society 147 (3): 606-620. doi.org/10.1002/tafs.10062 May 2018
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. September 2010
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. March 2013
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. September 2009
Walters, A.W., M.A.G. Sagrario, and D.E. Schindler. 2013. Species and community level responses interact to drive phenology of lake phytoplankton. Ecology 94:2188-2194. October 2013
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. December 2013
Walters, A.W., E. Mandeville, W.C. Saunders, P. Gerrity, J. Skorupski, Z. Underwood*, E. Gardunio. 2017. Comparison of burbot population dynamics across adjacent native and invaded ranges. Aquatic Invasions 12: 251-262 doi.org/10.3391/ai.2017.12.2.12 June 2017
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. December 2012
Walters, A.W., C.E. Girard, R.H. Walker, A.M. Farag, and D.A. Alvarez. 2019. Multiple approaches to surface water quality assessment provide insight for small streams experiencing oil and natural gas development. Integrated Environmental Assessment and Management 9999:1-13. doi.org/10.1002/ieam.4118. January 2019
Walters, A.W., C. Peterson, F. Rahel. 2018. The interaction of exposure and sensitivity determines fish species vulnerability to warming stream temperatures. Biology Letters 14:20180342. doi.org/10.1098/rsbl.2018.0342. September 2018
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. September 2011
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 September 2008
Walters, A.W. 2016. The importance of context dependency for understanding the effects of low flow events on fish. Freshwater Science 35(1), 216-228. doi:10.1086/683831. March 2016
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. September 2011
Walker, R.H., G.D. Smith, S.B. Hudson, S.S. French, and A.W. Walters. 2020. Warmer temperatures interact with salinity to weaken physiological facilitation to stress in freshwater fishes. Conservation Physiology https://doi.org/10.1093/conphys/coaa107 December 2020
Walker, R.H., C.E. Girard, S.L. Alford, and A.W. Walters. 2020. Individual and interactive effects of hydrology and surface disturbance on fish populations. Journal of Applied Ecology 57: 149-159. doi:10.1111/1365-2664.13517 January 2020
Walker, R.H.* and A.W. Walters. 2019. A mechanistic understanding of ecological responses to anthropogenic surface disturbance in headwater streams. Ecosphere 10(10):e02907. 10.1002/ecs2.2907. October 2019
Underwood, Z., E. Mandeville, and A.W. Walters. 2016. Population connectivity and genetic clustering of burbot populations in the Wind River Basin, Wyoming. Hydrobiologia 765:329-342 doi: 10.1007/s10750-015-2422-y. January 2016
Stewart, D.R., Z.E. Underwood, F.J. Rahel, and A.W. Walters. 2018. The effectiveness of surrogate taxa to conserve freshwater biodiversity. Conservation Biology 32: 183-194. doi/10.1111/cobi.12967. January 2018
Stewart, D.R., A.W. Walters, and F. Rahel. 2016. Factors influencing native and nonnative Great Plains fishes in Wyoming. Diversity and Distributions 22:225-238 doi: 10.1111/ddi.12383. January 2016
Senecal, A. C., A. W. Walters, and W. A. Hubert. 2015. Historical data reveal fish assemblage shifts in an unregulated prairie river. Ecosphere 6(12):287. http://dx.doi.org/10.1890/ES14-00361.1 December 2015
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 September 2009
Pantel, J., D. Pendleton, A. Walters, and L. Rogers. 2014. Linking environmental variability to population and community dynamics. p. 119-131. In P.F. Kemp [ed.], Eco-DAS IX Symposium Proceedings. ASLO. [doi: 10.4319/ecodas.2014.978-0-9845591-3-8.119] December 2014
Mandeville, E.G.*, A.W. Walters, B.J. Nordberg, K.Higgins, J.C. Burkhardt, and C.E. Wagner. 2019. Genomic outcomes of trout hybridization vary with stocking history. Molecular Ecology 28: 3738-3755 doi.org/10.1111/mec.15175 July 2019
Mandeville, C.P.*, F. Rahel, L.S. Patterson, and A.W. Walters. 2019. Applying threshold analysis to identify stream fish thermal guilds for water temperature regulation. Transactions of the American Fisheries Society 148(4): 739-754. doi.org/10.1002/tafs.10169 July 2019
LeCheminant A.G., G.M. Barrile, S.E. Albeke, A.W. Walters. 2021. Movement dynamics and survival of stocked Colorado River cutthroat trout Oncohynchus clarkii pleuriticus. Transactions of the American Fisheries Society 10.1002/tafs.10322 September 2021
Hickerson, B.T., Maitland, .M., and Walters, A.W. 2019. Effects of multiple nonnative predatory fish on an imperiled cyprinid, Hornyhead Chub (Nocomis biguttatus). Transactions of the American Fisheries Society 148: 1132-1145 doi.org/10.1002/tafs.10203 October 2019
Hickerson, B.T. and Walters, A.W. 2019. Evaluation of potential translocation sites for an imperiled cyprinid, Hornyhead Chub Nocomis biguttatus. North American Journal of Fisheries Management. 39:205-218. doi.org/10.1002/nafm.10261. January 2019
Gsell, A.S., Scharfenberger, U., D. Özkundakci, A.W. Walters, L. Hansson, P. Nõges, P.C. Reid, D.E. Schindler, E. van Donk, V. Dakos, R. Adrian. 2016. Early-warning signals foreshadow regime shifts in natural aquatic ecosystems. PNAS 113 (50) E8089-E8095doi: 10.1073/pnas.1608242113 November 2016
Godwin, B.L., S.E. Albeke, H.L. Bergman, A.W. Walters, and M. Ben-David. 2015. Density of river otters (Lontra canadensis) in relation to energy development in the Green River Basin, Wyoming. Science of the Total Environment 532: 780-790. July 2015
Girard, C.E. and A.W. Walters. 2018. Evaluating relationships between fishes and habitat in streams affected by oil and natural gas development. Fisheries Management and Ecology 25: 366-379. doi.org/10.1111/fme.12303 September 2018
Entrekin, S., K.O. Maloney, K. Kapo, A.W. Walters, M. Evans-White, K. Klemov. 2015. Stream vulnerability to widespread and emergent stressors: a focus on unconventional oil and gas. PLoS ONE 10(9): e0137416. doi:10.1371/journal.pone.0137416 September 2015
Ciepiela, L.R., and A.W. Walters. 2019. Quantifying ⁸⁷Sr/⁸⁶Sr temporal stability and spatial heterogeneity for use in tracking fish movement. Canadian Journal of Fisheries and Aquatic Sciences 76(6): 928-936. doi.org/10.1139/cjfas-2018-0124 April 2019
Ciepiela, L.R. and A.W. Walters. 2019. Life-history variation of two inland salmonids revealed through otolith microchemistry analysis. Canadian Journal of Fisheries and Aquatic Sciences 76(11):1971-1981 doi.org/10.1139/cjfas-2018-0087. October 2019
Brittany J. Nordberg, Elizabeth G. Mandeville, Annika W. Walters, Jason C. Burckhardt, and Catherine E. Wagner. 2021. Historical data illustrate the complex effects of stocking in Cutthroat Trout populations. North American Journal of Fisheries Management 10.1002/nafm.10593 February 2021
Booher, E. and A.W. Walters. 2021 Biotic and abiotic determinants of finescale dace distribution at the southern edge of their range. Diversity and Distributions 10.1111/ddi.13227 January 2021
Barrile, G.M., A.D. Chalfoun, A.W. Walters. 2021. Infection status as the basis for habitat choices in a wild amphibian. American Naturalist 197: 128-137. https://doi.org/10.1086/711927 | Abstract January 2021
Barrile, G.M., A. D. Chalfoun, and A.W. Walters. 2021 Livestock grazing, climatic variation, and breeding phenology jointly shape disease dynamics and survival in a wild amphibian. Biological Conservation 261: 109247. https://doi.org/10.1016/j.biocon.2021.109247 July 2021
Alford, S.L. and A.W. Walters. 2021. Rapid colonisation post-displacement contributes to native fish resilience. Ecology of Freshwater Fish. DOI: 10.1111/eff.12634 September 2021
Project Completion Date
Determining stream of origin and spawning site fidelity of salmonids in the Upper North Platte River drainage using otolith microchemistry December 2017
Identification of priority conservation areas for native aquatic species September 2016
Updating Temperature Criteria for Wyoming Surface Waters - DEQ August 2017
Wyoming Basin Rapid Ecoregional Assessment: Aquatic Ecosystems September 2014
Wyoming Range Native Fish and Energy Development June 2021
Burbot migration and movement: the impact of a managed flow regime December 2015
North Platte Reservoirs Stocked Salmonids Fate June 2024
Quantifying age and growth dynamics of key sport fishes December 2022
Evaluation of factors impacting Kokanee Salmon in New Forks Lakes June 2022
Genetic assessment of Yellowstone cutthroat trout across the Bighorn GMU June 2023
Evaluating the role of spring-fed streams to Snake River cutthroat trout June 2024
A survey of current distributions for Wyoming crayfishes December 2021
Drought, water availability, and the implications for fish July 2021
Seasonal Movement of Roundtail Chub in the Blacks Fork Drainage June 2022
Sediment and fisheries: An assessment to inform sediment management practices at Wyoming dams June 2022
Evaluating the effects of Brook Stickleback on native nongame fishes June 2022
Exploring mechanisms underlying the persistence of Yellowstone cutthroat trout despite hybridization in the North Fork Shoshone River drainage June 2021
Evaluating the use of redd counts in monitoring Snake River Cutthroat in Snake River tributaries June 2022
Distribution, habitat use, and evaluation of potential reintroduction sites for Finescale Dace in Wyoming June 2021
Spatiotemporal pattern of hybridization with walleye and genetic divergence in sauger life histories in the Bighorn River sauger population December 2019
Research and Monitoring of Wyoming Toad Reintroductions: Linking Survival, Behavior and Genetics to Inform Species Recovery June 2023
Survival of boreal toads across multiple life stages in relation to habitat, grazing, disease, and climate December 2021
Yellowstone cutthroat trout hybridization in the North Fork Shoshone River June 2018
Boreal Toad Habitat Selection and Survival in Relation to Grazing Intensity and Disease Prevalence December 2017
LaBarge Creek Cutthroat Trout Investigations December 2018
Conservation and Recovery of Hornyhead Chub June 2018
Baldock, Jeff
PhD
jbaldock@uwyo.edu

Clancy, Niall
PhD
nclancy1@uwyo.edu

Pilkerton, Ashleigh
PhD
apilkert@uwyo.edu

Ruthven, Jake
Master's
jruthven@uwyo.edu

Tiemann, Alissa
Master's
atiemann@uwyo.edu

Presentations Presentation Date
z. Underwood, A. Walters, E. Gardunio, P. Gerrity, E. Mandeville, C. Saudners, and J. Skorupski. 2015. Comparison of Burbot Population Dynamics Across Adjacent Native and Invaded Ranges. AFS annual meeting, Portland, OR. August 2015
Zachary Underwood, Elizabeth Mandeville, Annika Walters, Joe Deromedi, Paul Gerrity, Mike Mazur, and Kevin Johnson. 2015. The effects of water development on the genetic structure of burbot in the upper Wind River Basin, Wyoming. CO/WY American Fisheries Society Annual Meeting. Fort Collins, CO. February 2015
Z. Underwood, E. Mandevills, A. Walters, J. Deromedi, P. Gerrity, and K. Johnson. The Effects of Water Development on the Population Connectivity of Burbot in the Upper Wind River Basin, Wyoming. AFS Annual Meeting, Portland, OR. August 2015
William Rosenthal, Ashleigh Pilkerton, Elizabeth Mandeville, Joe Skorupski, Paul Gerrity, Annika Walters and Catherine Wagner. 2020. Sauger Population Structure and Hybridization with Introduced Walleye. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2020
William Rosenthal W., J. Fennell, A. Walters, and C. Wagner. 2020. Evaluating Causes of Reproductive Isolation in Hybridizing Trout. American Fisheries Society virtual annual meeting. September 2020
Webster, M., G. Barrile, A. Walters, and A. Chalfoun. 2020. ‘Dude! Where’s my pond?!' Evaluating the role of beaver activity in pond persistence over time. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2020
Walters, A.W., and C. Girard. 2013. The effects of energy development on habitat quality and fish communities in southwestern Wyoming. Society for Freshwater Science annual meeting. May 2013
Walters, A.W., Z. Hooley-Underwood, and E.G. Mandeville. 2018. Evaluating the influence of dams and diversions on Burbot movement in the Wind River Drainage, Wyoming using genetic, isotopic, and field data. Western Division of American Fisheries Society, Anchorage, Alaska. May 2018
Walters, A.W., T. Copeland, and D.A. Venditti. The density dilemma: limitations on juvenile production in threatened salmon populations. Western Division American Fisheries Society Meeting. Boise, Idaho. April 2013
Walters, A.W. and C. Girard. 2014. Differential vulnerability of fish to energy development. Joint Aquatic Sciences Meeting, Portland, OR. May 2014
Walters, A.W. and C. Girard. 2013. Energy development, habitat quality, and native fish communities in southwestern Wyoming. American Fisheries Society annual meeting, Little Rock, AR, September 2013. September 2013
Walters, A.W. 2016. The role of context dependency in understanding the effects of low flow events on fish. SFS annual meeting, Sacramento, CA. May 2016
Walters, A.W. 2016. The role of context dependency in understanding the effects of low flow events on fish. AFS annual meeting, Kansas City, MO. August 2016
Walters, A., R. Walker, and S. Alford. 2018. Evaluating the resiliency of fish populations to stochastic disturbances. WY-TWS and WLCI Joint Meeting, Laramie, WY. November 2018
Walters, A., N. Carr, K. Sherrill, and J. Wesner. What insight can the Wyoming Basin Rapid Ecoregional Assessment provide for fisheries and aquatic habitat management in Wyoming? CO/WY American Fisheries Society Meeting, Laramie, WY. March 2014
Walters, A. and Ciepiela, L. R. 2019. Fitness consequences of life-history variation in spawning migrations of two inland salmonids. Society for Freshwater Science Annual Meeting, Salt Lake City, Utah. May 2019
Walters, A. and Ciepiela, L. R. 2019. Fitness consequences of life-history variation in spawning migrations of two inland salmonids. Joint American Fisheries Society and Wildlife Society Meeting. October 2019
Walters, A. and C. Girard. 2015. The effects if oil and gas development for aquatic habitats. Wyoming Landscape Conservation Initiative/ The Wildlife Society Meeting, Lander WY. December 2015
Walker, R.H., C.E. Girard, S.A. Alford, and A.W. Walters. 2019. Surface disturbance intensifies the effect of low flows on stream fishes. Society for Freshwater Science annual meeting. May 2019
Walker, R.H. and Walters, A.W. 2018. It takes two to tango: interactive effects of hydrology and energy development on fish abundance. Colorado-Wyoming American Fisheries Society, Laramie, Wyoming. February 2018
Walker, R., and A. Walters. 2018. Mechanisms Underlying Ecological Responses to Surface Disturbance in Headwater Streams. WY-TWS and WLCI Joint Meeting, Laramie, WY. November 2018
Walker, R., C. Girard, and A. Walters. 2016. Does oil and natural gas development and hydrology interact to affect fish populations. SFS meeting, Sacramento, CA. May 2016
Walker, R., C. Girard, and A. Walters. 2016. Does oil and natural gas development and hydrology interact to affect fish populations. CO/WY AFS meeting, Laramie, WY. March 2016
Walker, R., C. Girard, and A. Walters. 2015. Does oil and natural gas development and hydrology interact to affect fish population dynamics? Wyoming Landscape Conservation Initiative/ The Wildlife Society Meeting, Lander WY. December 2015
Walker, R. and A. Walters. 2015. Population dynamics of three fishes in relation to energy development in headwater streams of the Wyoming Range. Society for Freshwater Science annual meeting, Milwaukee, WI. May 2015
W. Rosenthal, J. Fennell, A. Walters, and C. Wagner. 2021 Fitness effects in hybridizing trout. American Fisheries Society Annual Meeting 2021. November 2021
Underwood, Z.E., E.G. Mandeville, and A.W. Walters. The effects of water development on the genetic structure of North American bubot populations. International Congress on the Biology of Fish. Edinburgh, Scotland. August 2014
Underwood, Z, and A. Walters. 2014. Burbot movement and entrainment pathways in the upper Wind River drainage CO/WY American Fisheries Society Meeting, Laramie, WY. March 2014
Tiemann, A. and Walters, A. 2021. Evaluating movement patterns of Roundtail Chub and Flannelmouth Sucker in the Blacks Fork Subdrainage. Colorado/Wyoming Chapter of the American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2021
Tiemann, A. and Walters, A. 2021. Evaluating movement patterns of Roundtail Chub and Flannelmouth Sucker in the Blacks Fork Subbasin. Western Division of the American Fisheries Society Annual Meeting, Utah. May 2021
Tiemann, A. and Walters, A. 2020. Evaluating movement patterns of Roundtail Chub and Flannelmouth Sucker in the Blacks Fork Subdrainage. Colorado/Wyoming Chapter of the American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2020
Stewart, D., Z. Underwood, A. Walters, and F. Rahel. 2016. Are native fish management areas efficient conservation surrogates for amphibians, mussels, and reptiles? CO/WY AFS meeting, Laramie, WY. March 2016
Senecal, A., A. Walters, and W. Hubert. 2016. Reconciling the temporal scales of data collection and population-level change: the Powder River’s “native invaders”. CO/WY AFS meeting, Laramie, WY. March 2016
Sam Sillen, William Fetzer, Annika Walters, Matt Ross, Lindsay Patterson, Michael Thomas, Sarah Collins. 2021. Harmful cyanobacterial bloom (HCB) dynamics in Wyoming reservoirs. Society of Freshwater Sciences Annual Meeting 2021. May 2021
Ruthven, J. and A. Walters. 2021. Looking at the big picture:<b> </b>evaluating the landscape-level distributional drivers of Brook Stickleback in the North Platte River Drainage, Wyoming. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2021. February 2021
Ruthven, J. and A. Walters. 2020. Evaluating the effects of Brook Stickleback on native nongame fishes in the Bighorn and North Platte Drainages, Wyoming. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2020
Rosenthal W., Fennell, J., Walters, A., Wagner, C., Mandeville, E., and Burckhardt, J. 2019. Effects of hybridization on fitness in Oncorhynchus of the North Fork Shoshone River drainage. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting, Fort Collins, Colorado February 2019
Richard Walker, Geoff D. Smith and Annika Walters. 2017. Physiological responses of fishes to stressors associated with oil and natural gas development. Western Division American Fisheries Society May 2017
Richard Walker, Geoff D. Smith and Annika Walters. 2017. Physiological responses of fishes to stressors associated with oil and natural gas development. CO/WY AFS meeting. June 2017
Richard Walker, Geoff D. Smith and Annika Walters. 2017. Physiological responses of fishes to stressors associated with oil and natural gas development. CO/WY AFS meeting. February 2017
R. Walker and A.W. Walters. 2015. Population dynamics of three fishes in relation to energy development in headwater streams of the Wyoming Range. CO/WY American Fisheries Society Meeting. Fort Collins, CO. February 2015
Pilkerton, A., A. Walters, F.Rahel, and L. Patterson. 2020. Sediment and Fisheries: Quantify Impacts of Sediment Releases from Willwood Dam. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2020
Pilkerton, A., A. Walters, F. Rahel, and L. Patterson. 2021. Modeling Surrogate Metrics for Fine Sediment Deposition Impacts in Suitable Salmonid Spawning Habitat. Society of Freshwater Sciences Annual Meeting 2021. May 2021
Pilkerton, A., A. Walters, F. Rahel, and L. Patterson. 2021. Modeling Surrogate Metrics for Fine Sediment Deposition Impacts in Suitable Salmonid Spawning Habitat, Willwood Dam, WY. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2021. February 2021
Peterson, C., F. Rahel, and A. Walters. 2016. Division of thermal communities in Wyoming streams into management clusters. CO/WY AFS meeting, Laramie, WY. March 2016
Peterson, C., F. Rahel, and A. Walters. 2016. Division of Wyoming stream thermal communities into management clusters. ALSO annual meeting, Santa Fe, NM. June 2016
Peterson, C., F. Rahel, and A. Walters. 2015. An evaluation of thermal criteria in Wyoming surface water quality standards. Society for Freshwater Science annual meeting, Milwaukee, WI. May 2015
Peterson, C., F. Rahel, and A. Walters. 2015. An evaluation of thermal criteria in Wyoming surface water quality standards. CO/WY AFS meeting, Fort Collins, CO. February 2015
Newkirk, B., Walters A., and E. Larson. 2021. A survey of current distributions for Wyoming crayfishes. Colorado-Wyoming Chapter of The American Fisheries Society Annual Meeting 2021. February 2021
Mandeville, EG, AW Walters, and CE Wagner, 2019. Fine-scale genetic patterns in Yellowstone cutthroat x rainbow trout hybrids in the North Fork Shoshone River, Wyoming. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2019
Mandeville, E.G., C.E. Wagner, J.C. Burckhardt, and A.W. Walters. 2018. Variable hybridization outcomes in Yellowstone cutthroat x rainbow trout: genomic consequences and ecological correlates of hybridization. Colorado/Wyoming Meeting of the American Fisheries Society, Laramie, WY. February 2018
Mandeville, E.G., A.W. Walters, J.C. Burckhardt, and C.E. Wagner. 2018. Genomic consequences and ecological correlates of variable hybridization outcomes in Yellowstone cutthroat x rainbow trout. Annual Evolution Meeting, Montepelier, France. August 2018
Mandeville, E.G., A.W. Walters, B.J. Nordberg, J.C. Burckhardt, and C.E. Wagner. 2018. History of fish stocking drives variable hybridization outcomes in Yellowstone cutthroat x rainbow trout. Ecological Society of America. New Orleans, Lousiana. August 2018
Mandeville, E., A. Walters, and C. Wagner. 2020. Locus-specific Introgression Reveals Hybridization Dynamics of Yellowstone Cutthroat Trout and Rainbow Trout. American Fisheries Society virtual annual meeting. September 2020
Liz Mandeville, Catherine E. Wagner, and Annika Walters. 2017. Hybridization between Yellowstone cutthroat trout and rainbow trout in the North Fork Shoshone river. CO/WY AFS meeting February 2017
Lindsy Ciepiela and Annika Walters. 2017. Estimating salmonid movement dynamics in the Upper North Platte River using otolith microchemistry. Western AFS meeting. May 2017
Lindsy Ciepiela and Annika Walters. 2017. Estimating salmonid movement dynamics in the Upper North Platte River using otolith microchemistry. CO/WY AFS meeting. February 2017
LeCheminant, A. and A. Walters. 2016. Movement dynamics and survival of hatchery-reared Colorado River cutthroat trout post-stocking. CO/WY AFS meeting, Laramie, WY. March 2016
Krist, A., K. Wagner, and A. Walters. 2018. Using ecological stoichiometry and fish presence to predict the zooplankton community structure in Wyoming alpine lakes. Society for Freshwater Science, Detroit, MI. May 2018
Jordan Von Eggers, Amy Krist, Catherine Wagner, Annika Walters, Bryan Shuman. 2020. Using eDNA in lake sediment cores to study fish introduction and environmental stressors on alpine lakes in Wyoming. AGU Fall Meeting (virtual) December 2020
Hickerson, B., T. Robinson, and A. Walters. 2019. Evaluation of potential translocation sites for native fish: a case study. Arizona/New Mexico AFS meeting. February 2019
Hickerson, B. and Walters, A. 2017. Effects of non-native predatory fish on hornyhead chub in the Laramie River. Western Division of the American Fisheries Society Student Colloquium, McCall, Idaho. November 2017
Hickerson, B. and A. Walters. 2018. Effects of non-native predatory fish on hornyhead chub in the Laramie River. Colorado Wyoming Chapter of the American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2018
Hickerson, B. and A. Walters. 2016. Locating Potential Reintroduction and Refugia Sites for Hornyhead Chub using GIS. CO/WY AFS meeting, Laramie, WY. March 2016
Girard, C., and A.Walters. 2014. The Dry Piney Study: Energy development effects to native fish communities along the Wyoming Range. CO/WY American Fisheries Society Meeting, Laramie, WY. March 2014
Girard, C., A. Walters. 2014. The Dry Piney study: Energy development effects to native fish communities along the Wyoming Range. Western American Fisheries Society meeting, Mazatlan, Mexico. April 2014
Girard, C. and A.W. Walters. 2013. The Wyoming Range Fish Project: the impacts of energy development on native fish. CO/WY AFS annual meeting, Fort Collins, CO, February 25-27, 2013. February 2013
Gabe Barrile, Anna D. Chalfoun, Annika Walters. 2015. Boreal toad habitat selection and survival in relation to grazing intensity and disease prevalence. Joint WLCI and Wyoming TWS meeting, Lander, WY, 1-3 December, 2015. December 2015
Gabe Barrile, Anna Chalfoun, Annika Walters. 2016. Boreal toad habitat selection and survival in relation to grazing intensity and disease prevalence. . Annual Meeting of the Wyoming Chapter of The Wildlife Society. Cody, Wyoming. November 2016
Fennell, J., Walters, A., and Wagner, C. 2021. Exploring mechanisms underlying the persistence of Yellowstone cutthroat trout despite hybridization in the North Fork Shoshone River drainage. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2021. February 2021
Fennell, J., Walters, A., and Wagner, C. 2019. Exploring mechanisms underlying the persistence of Yellowstone cutthroat trout despite hybridization in the North Fork Shoshone River drainage. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2020
Fennel, J, E. Mandeville, W. Rosenthal, C. Wagner and A. Walters. 2019. Exploring mechanisms underlying the persistence of Yellowstone Cutthroat Trout despite hybridization in the North Fork Shoshone River drainage. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2019
D.R. Stewart, A.W. Walters, and F.J. Rahel. 2015. Conservation of native Wyoming fishes through identification and implementation of native fish management areas. CO/WY American Fisheries Society Annual Meeting. Fort Collins, CO. February 2015
Ciepiela, L. and A. Walters. 2016. Estimating spatial heterogeneity and temporal stability of strontium isotope signatures for use in tracking fish movements. National AFS meeting.Kansas City. August 2016
Ciepiela, L. and A. Walters. 2016. Estimating spatial heterogeneity and temporal stability of strontium isotope signatures for use in tracking fish movements. CO/WY AFS meeting. Laramie, WY. March 2016
Ciepiela, L. R. and Walters, A. 2019. Quantifying ⁸⁷Sr/⁸⁶Sr temporal stability and spatial heterogeneity for use in tracking fish movement. 2019 Oregon Chapter of the American Fisheries Society 55th Annual Meeting, Bend, Oregon. March 2019
Ciepiela, L. R. and Walters, A. 2018. Quantifying ⁸⁷Sr/⁸⁶Sr temporal stability and spatial heterogeneity for use in tracking fish movement. Colorado/Wyoming Chapter of the American Fisheries Society, Laramie, Wyoming. February 2018
C. Webb, L.<b> </b>Combrink, A. Pilkerton, L. Schultz, D. Rhea, and A. Walters. Modeling Influence of Temperature on Colorado River Cutthroat Trout Distribution in the Upper Green River Drainage. 151st American Fisheries Society Annual Meeting, 2021. November 2021
Brian Hickerson and Annika Walters. 2017. Evaluation of Potential Reintroduction Sites for Hornyhead Chub. Western AFS meeting May 2017
Brian Hickerson and Annika Walters. 2017. Evaluation of Potential Reintroduction Sites for Hornyhead Chub. CO/WY AFS meeting February 2017
Booher, E.,A. Walters. 2020. Distribution, habitat use, and evaluation of potential managed translocation sites for Finescale Dace in the Great Plains. Western Division American Fisheries Society Meeting 2020. (cancelled due to covid) April 2020
Booher, E.,A. Walters. 2020. Distribution, habitat use, and evaluation of potential managed translocation sites for Finescale Dace in the Great Plains. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2020
Booher, E. and Walters, A. 2018. Classification of habitat suitability for finescale dace in the Belle Fourche - Cheyenne and Niobrara Drainages. Western Division of the American Fisheries Society Annual Meeting, Anchorage, Alaska. May 2018
Booher, E. and Walters, A. 2018. A landscape model for distribution and habitat suitability of finescale dace in the Belle Fourche - Cheyenne and Niobrara Drainages. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2018
Booher, E and A. Walters. 2019. Islanders of the High Plains: finescale dace conservation and management in Wyoming. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2019
Booher, E and A. Walters. 2019. Islanders of the High Plains: finescale dace conservation and management in Wyoming. American Fisheries Society and the Wildlife Society joint annual conference, Reno, NV. October 2019
Barrile, G., A.D. Chalfoun, and A. Walters. 2016. Boreal toad habitat selection and survival in relation to grazing intensity and disease prevalence. CO/WY AFS meeting, Laramie, WY. March 2016
Barrile, G., A. Walters, and A. Chalfoun. 2020. Buy high, sell low: an ecological investment strategy for population stability in a wild amphibian. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2020
Barrile, G., A. Chalfoun, and A. Walters. 2018. Integrating count and capture-recapture data across multiple life-stages to model population dynamics of boreal toads in western Wyoming. WY-TWS and WLCI Joint Meeting, Laramie, WY. November 2018
Barrile, G., A. Chalfoun, and A. Walters. 2018. Habitat use and body temperature influence Boreal Toad disease risk in Western Wyoming. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2018
Barrile, G., A. Chalfoun and A. Walters. 2017. Boreal toad habitat selection in relation to livestock grazing and disease prevalence. Joint Meeting of the CO/WY/UT Chapters of the American Fisheries Society, Grand Junction, CO. February 2017
Barrile, G., A. Chalfoun,, and A. Walters. 2017. Habitat use and body temperature influence boreal toad disease risk in western Wyoming. Wyoming Chapter of The Wildlife Society Annual Meeting, Jackson, WY, 5-7 December 2017. December 2017
Baldock, J., A. Walters, and R. Al-Chokhachy. 2019. Evaluating the use of redd counts in monitoring Snake River Cutthroat in spring-fed tributaries of the upper Snake River watershed. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2019
Baldock, J., A. Walters, T. Walsworth, & R. Al-Chokhachy. 2020. Effects of redd superimposition on observer error structure in redd counts: Implications for long-term monitoring of Snake River cutthroat trout in Wyoming. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020 February 2020
Baldock, J., A. Walters, R. Al-Chokhachy, & M. Campbell. 2020. Effects of conspecific redd superimposition on the spawning success of Yellowstone cutthroat trout in Wyoming. Western Division of the American Fisheries Society Annual Meeting 2020. (cancelled due to covid) April 2020
Baldock, J., A. Walters, & R. Al-Chokhachy. 2021. Redd superimposition mediates observer error structure in redd counts for Yellowstone Cutthroat trout. Western Division of the American Fisheries Society Annual Meeting 2021. May 2021
Baldock JR, Walters A, Al-Chokhachy R, & Campbell MR. 2021. Spawning behavior mediates reproductive success and population productivity of Snake River Cutthroat Trout. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2020. February 2021
Ashleigh Pilkerton, Elizabeth Mandeville, Joe Skorupski, Paul Gerrity, William Rosenthal, Annika Walters, and Catherine Wagner. 2019. Spatiotemporal patterns of hybridization of Walleye and Sauger in the Bighorn and Wind River Sauger Populations. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2019
Annika Walters, Frank Rahel, and Caitlin Peterson. 2017. Which fish species are most vulnerable to warming stream temperatures associated with climate change? Western AFS meeting. May 2017
Annika Walters, Frank Rahel, and Caitlin Peterson. 2017. Which fish species are most vulnerable to warming stream temperatures associated with climate change? CO/WY AFS meeting. February 2017
Alford, S. and Walters, A. Evaluating movement and colonization of fish in the Wyoming Range. American Fisheries Society and the Wildlife Society joint annual conference, Reno, NV. October 2019
Alford, S. and Walters, A. 2020. Little Fish Insist to Persist: How colonization and movement dynamics enhance native fish resilience. Colorado and Wyoming American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2020
Alford, S. and Walters, A. 2019. Evaluating colonization of fish in the Wyoming Range. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting 2019. February 2019
Alford, S. and Walters, A. 2018. Evaluating factors influencing movement rates of mottled sculpin and mountain sucker in the Wyoming Range. Colorado-Wyoming Subdivision of the American Fisheries Society Student Colloquium, Laramie, Wyoming. February 2018
Alex LeCheminant and Annika Walters. 2017. Movement dynamics and survival of hatchery-reared Colorado River cutthroat trout post-stocking. CO/WY AFS meeting. February 2017
A. Walters, E. Booher, B. Hickerson, and Mark Kirk. 2021. Non-native species as an emerging threat to northern prairie fishes. American Fisheries Society Annual Meeting 2021. November 2021
A. Walters and R. Walker. 2017. Context dependent effects of flow on fish. Society for Freshwater Science annual meeting. June 2017
A. LeCheminant and A. Walters. 2018. Movement dynamics and survival of hatchery-reared Colorado River cutthroat trout post-stocking. Colorado-Wyoming Chapter of the American Fisheries Society Annual Meeting, Laramie, Wyoming. February 2018
Technical Publications Publication Date
Zeigenfuss, L.C., Aikens, E., Aldridge, C.L., Anderson, P.J., Assal, T.J., Bowen, Z.H., Chalfoun, A.D., Chong, G.W., Eddy-Miller, C.A., Germaine, S.S., Graves, T., Homer, C.G., Huber, C.C., Johnston, A., Kauffman, M.J., Manier, D.J., McShane, R.R., Miller, K.A., Monroe, A.P., Ortega, A., Walters, A.W., and Wyckoff, T.B., 2019, U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2017 annual report: U.S. Geological Survey Open-File Report 2018–1188, 57 p., https://doi.org/10.3133/ofr20181188 December 2019
Carr, N.B., and Melcher, C.P., eds., 2015, Wyoming Basin Rapid Ecoregional Assessment: U.S. Geological Survey Open-File Report 2015–1155, 896p., http://dx.doi.org/10.3133/ofr20151155. August 2015
Carr, N.B., Garman, S.L., Walters, Annika, Ray, Andrea, Melcher, C.P., Wesner, J.S., O’Donnell, M.S., Sherrill, K.R., Babel, N.C., and Bowen, Z.H., 2013 Wyoming Basin Rapid Ecoregional Assessment work plan: U.S. Geological Survey Open-File Report 2013–1223, 58 p., http://dx.doi.org/10.3133/ofr20131223. December 2013
Bowen, Z.H., Aldridge, C.L., Anderson, P.J., Assal, T.J., Bern, C.R., Biewick, L.R.H., Boughton, G.K., Chalfoun, A.D., Chong, G.W., Dematatis, Marie, Fedy, B.C., Garman, S.L., Germaine, Stephen, Hethcoat, M.G., Homer, Collin, Huber, Collin, Kauffman, M.J., Latysh, Natalie, Manier, Daniel, Melcher, C.P., Miller, K.A., Potter, C.J., Schell, S.L., Sweat, M.J., Walters, Annika, and Wilson, A.B., 2014, U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2013 annual report: U.S. Geological Survey Open-File Report 2014–1213, 60 p., http://dx.doi.org/10.3133/ofr20141213. October 2014
Bowen, Z.H., Aldridge, C.L., Anderson, P.J., Assal, T.J., Bartos, T.T., Chalfoun, A.D., Chong, G.W., Dematatis, M.K., Eddy-Miller, C.A., Garman, S.L., Germaine, S.S., Homer, C.G., Huber, C.C., Kauffman, M.J., Manier, D.J., Melcher, C.P., Miller, K.A., Norkin, Tamar, Sanders, L.E., Walters, A.W., Wilson, A.B., and Wyckoff, T.B., 2016, U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2015 annual report: U.S. Geological Survey Open-File Report 2016–1141, 59 p., http://dx.doi.org/10.3133/ofr20161141. September 2016
Bowen, Z.H., Aldridge, C.L., Anderson, P.J., Assal, T.J., Bartos, T.T., Biewick, L.R.H., Boughton, G.K., Chalfoun, A.D., Chong, G.W., Dematatis, M.K., Eddy-Miller, C.A., Garman, S.L., Germaine, S.S., Homer, C.G., Huber, Christopher, Kauffman, M.J., Latysh, Natalie, Manier, D.J., Melcher, C.P., Miller, A.R., Miller, K.A., Olexa, E.M., Schell, S.L., Walters, A.W., Wilson, A.B., and Wyckoff, T.B., 2015, U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2014 annual report: U.S. Geological Survey Open-File Report 2015–1091, 61 p., http://dx.doi.org/10.3133/ofr20151091. July 2015
Anderson, P.J., Aldridge, C.L., Alexander, J.S., Assal, T.J., Aulenbach, S., Bowen, Z.H., Chalfoun, A.D., Chong, G.W., Copeland, H., Edmunds, D.R., Germaine, S., Graves, T., Heinrichs, J.A., Homer, C.G., Huber, C.C., Johnston, A., Kauffman, M.J., Manier, D.J., McShan, R.R., Eddy-Miller, C.A., Miller, K.A., Monroe, A.P., O’Donnell, M.S., Ortega, A., Walters, A.W., Wieferich, D., Wyckoff, T.B., and Zeigenfuss, L., 2021, U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2018 annual report: U.S. Geological Survey Open-File Report 2021–1067, 33 p., https://doi.org/10.3133/ofr20211067. July 2021
1. Bowen, Z.H., Aikens, E., Aldridge, C.L., Anderson, P.J., Assal, T.J., Chalfoun, A.D., Chong, G.W., Eddy-Miller, C.A., Garman, S.L., Germaine, S.S., Homer, C.G., Johnston, A., Kauffman, M.J., Manier, D.J., Melcher, C.P., Miller, K.A., Walters, A.W., Wheeler, J.D., Wieferich, D., Wilson, A.B., Wyckoff, T.B., and Zeigenfuss, L.C., 2018, U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report: U.S. Geological Survey Open-File Report 2018–1048, 49 p., https://doi.org/10.3133/ofr20181048. April 2018