This site will look much better in a browser that supports more modern web standards, but it is accessible to any browser or Internet device.

Skip Navigation skip menu and banner
University of Wyoming

Amy Krist

Associate Professor
Evolutionary Ecology

Education

  • B.A. Biology, State University of New York at Potsdam
  • B.A. History, State University of New York at Potsdam
  • Ph.D. Ecology, Evolution, and Behavior, Indiana University

Current Courses

  • Invertebrate Zoology (Fall semesters)
  • Animal Biology (Spring Semesters)

Research Interests

  • I am an evolutionary ecologist focusing primarily on populations and communities. I seek to understand the biology of invasions by studying the causes of success of an invasive snail, Potamopyrgus, and the effects on trout introductions in alpine lakes. I also study ecological stoichiometry and have applied a stoichiometric perspective to understand the distribution of organismal ploidy level, parasite-host interactions, and biological invasions.

Current Graduate Students

  • Spencer Cruz, PhD student: ecological stoichiometry and functional trait diversity
  • Briante Najev (co-advised with Maurine Neiman), PhD student: the role of phosphorus limitation in the maintenance of ploidy polymorphism and sexual reproduction in a New Zealand freshwater snail
  • Jordan Von Eggers (co-advised with Bryan Shuman), PhD student: reconstructing the effects of fish introduction, nutrient levels, and climate change on organisms in alpine lakes with sediment cores
  • Casey Brucker (co-advised with Sarah Collins), MSc student: seasonal variation in nutrient content and stoichiometry of lakes

Past Graduate Students

  • Elle Balph, MSc 2022: phenotypic plasticity in novel environments
  • Lindsey Boyle, MSc 2020: Effects of fish and nutrients on zooplankton assemblages in alpine lakes in the Wind River Range, WY.
  • Michele Larson- Ph.D. 2018: Invasion biology of Potamopyrgus antipodarum.
  • Daniel Greenwood - MSc 2018: Causes and consequences of the boom and bust of an invasive snail.
  • Tonya Anderson - MSc 2013: Life histories of Daphnia after the introduction of lake trout into Yellowstone Lake.
  • Brenna Hansen - MSc 2013: Behavioral and physiological mechanisms for coping with phosphorus limitation in invasive snails.
  • Charlotte Narr - MSc 2011: Effects of the stoichiometry of host food on parasite virulence and transmission; freshwater gastropod survey of Wyoming
  • Heather Thon - MSc 2011: Invasive snail halt the growth of native snails

Publications

  • Tumolo, B, Collins, S., Guan, Y., Krist, A.C. In press. Resource quantity and quality differentially control stream invertebrate biodiversity across spatial scales. Ecology Letters.
  • Balph, A.W. and Krist A.C. . 2023. Novel environments induce variability in fitness-related traits. Ecology and Evolution 13:e10165
  • Combrink,L.L., W.C. Rosenthal, L.J. Boyle, J.A. Rick, E.G. Mandeville, Krist A.C., A.W. Walters, C.E. Wagner. 2023. Parallel shifts in trout feeding morphology suggest rapid adaptation to alpine lake environments. Evolution 77: 1522-1538.
  • Larson M.D.,D.Greenwood, K. Flanigan, Krist A.C. 2023. Field surveys reveal physicochemical conditions promoting occurrence and high abundance of an invasive freshwater snail (Potamopyrgus antipodarum). Aquatic Invasions 18: 83-102.
  • Larson M.D., Levri E.P., Huzurbazar S.V,. Greenwood D.J., Wise K.L., Krist A.C. 2020. No evidence for a dilution effect of the non-native snail, Potamopyrgus antipodarum, on native snails.PLoS ONE 15(10): e0239762. https://doi.org/10.1371/journal.pone.0239762
  • Larson, M.D. and Krist, A.C. 2020. Trematode prevalence and an invasive freshwater snail: fewer infections and parasites likely contribute to the success of an invasive snail. Biological Invasions22: 1279-1287, doi 10.1007/s10530-019-02179-3
  • Greenwood, D.J., R.O. Hall Jr., T.M. Tibbets, Krist, A.C 2020. A precipitous decline in an invasive snail population cannot be explained by a native predator. Biological Invasions 22: 363-378.
  • Narr C.F. Krist, A.C. 2020. Improving estimates of richness, habitat associations, and assemblage characteristics of freshwater gastropods. Aquatic Conservation: Marine and Freshwater Ecosystems 30: 131-143.
  • Larson, M.D., Dewey, J.C. Krist, A.C 2020. Invasive Potamopyrgus antipodarum (New Zealand mudsnails) and native snails differ in sensitivity to specific electrical conductivity and cations. Aquatic Ecology 54: 103-117.
  • Krist, A.C , L. Bankers, K. Larkin, M.D. Larson, D.J. Greenwood, M.A. Dyck, M. Neiman, 2017. Phosphorus availability in the source population influences response to dietary phosphorus quantity in a New Zealand freshwater snail. Oecologia 185: 595-605.
  • Neiman, M. and Krist, A.C . 2016. Sensitivity to dietary phosphorus limitation in native vs. invasive lineages of a New Zealand freshwater snail. Ecological Applications 26:2218-2224. DOI: 10.1002/eap.1372
  • Krist, A.C. , A.D.Kay, E. Scherber, K. Larkin, B.J. Brown, D. Lu, D.T. Warren, R. Riedl, M. Neiman. 2016. Evidence for extensive but variable nutrient limitation in New Zealand lakes. Evolutionary Ecology 30(5) 973-990. DOI 10.1007/s10682-016-9855-2
  • Hansen, B., T.M. Tibbets, Krist, A.C. 2016. Foraging differences between the native snail, Fossaria sp. and the invasive New Zealand mudsnail, (Potamopyrgus antipodarum) in response to phosphorus limitation. Aquatic Ecology 50:297. doi 10.1007/s10452-016-9578-z
  • Narr, C.F., Krist, A.C.. 2015. Host diet alters trematode replication and elemental composition. Freshwater Science 34(1): 81-91
  • Levri, E.P. Krist, A.C., R. Bilka, M.F. Dybdahl. 2014. Phenotypic plasticity of the introduced New Zealand mud snail, Potamopyrgus antipodarum compared to sympatric native snails. PLOS ONE 9(4): e93985
  • Krist, A.C., A.D. Kay, K. Larkin, M. Neiman. 2014. Response to phosphorus limitation varies among lake populations of the freshwater snail, Potamopyrgus antipodarum. PLOS ONE 9(1): e85845
  • Neiman, M., A.D. Kay, and A.C. Krist. 2013. Sensitivity to phosphorus limitation increases with ploidy level in a New Zealand snail. Evolution 67: 1511-1517.
  • Neiman, M., A.D. Kay, and A.C. Krist. 2013. Can resource costs of polyploidy provide an advantage to sex? Heredity 110: 152-159.
  • Krist, A.C. and Charles, C.C. 2012. The invasive New Zealand mudsnail, Potamopyrgus antipodarum, is an effective grazer of algae and altered the assemblage of diatoms more than native grazers. Hydrobiologia 694: 143-151.
  • Tibbets, T. M., Krist, A. C. , Hall, R.O. Jr., Riley, L. A. 2010. Phosphorus-mediated changes in life history traits of the invasive New Zealand mudsnail Potamopyrgus antipodarum. Oecologia 163:549-559.
  • Krist, A. C. . 2008. Phenotypic correlations reveal evidence for growth costs but not survival costs in a freshwater snail. Evolutionary Ecology Research 10: 1-9.
  • Krist, A. C. and Showsh, S.A. 2007. Experimental evolution of antibiotic resistance in bacteria. American Biology Teacher 69:218-221.
  • Krist, A. C. 2006. Prevalence of parasites does not predict age at first reproduction or reproductive output in the freshwater snail, Helisoma anceps . Evolutionary Ecology Research 8: 753-763.
  • Dybdahl, M.F., and , A. C. Krist . 2004. Genotypic versus condition effects on parasite-driven rare advantage. Journal of Evolutionary Biology 17: 967-973.
  • Krist, A. C ., J. Jokela, J. Wiehn, and C.M. Lively. 2004. Effects of host condition on susceptibility to infection, parasite development rate, and parasite transmission in a snail-trematode interaction. Journal of Evolutionary Biology 17: 33-40.
  • Krist, A. C. 2002. Crayfish induce a defensive shell shape in a freshwater snail. Invertebrate Biology 121:235--242.
  • Krist, A. C. 2001. Variation in fecundity among populations of snails is predicted by prevalence of castrating parasites. Evolutionary Ecology Research 3:191--197.
  • Krist, A. C., C. M. Lively, E. P. Levri, J.Jokela 2000. Spatial variation in susceptibility to infection in a snail-trematode interaction. Parasitology 121:395--401.
  • Krist, A. C. 2000. Effects of the digenean parasite Proterometra macrostoma on host morphology in the freshwater snail Elimia livescens. Journal of Parasitology 86: 262--267
  • Krist, A. C. and C. M. Lively. 1998. Experimental exposure of juvenile snails (Potamopyrgus antipodarum ) to infection by trematode larvae (Microphallus sp.): infectivity, fecundity compensation and growth. Oecologia 116: 575--582.
© 2004 University of Wyoming  ·  Disclaimer