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Current research themes in the lab:
Current research themes in the lab:
Evolutionary ecology of alpine lakes: We study the effects of disturbance by trout introductions, nutrient deposition, and climate change on zooplankon and trout (Combrink et al. 2023) in naturally fishless alpine lakes in the Wind River Range, WY. This work is in collaboration with Katie Wagner, and Annika Walters and their students, Lucia Combrink, and Meredith Journey.
My lab just recived funding from the National Science Foundation to address the ecological and evolutionary consequences of intra and interspecific variation in zooplankton in response to trout introductions.
https://eos.org/articles/dna-in-lake-sediment-reveals-the-impact-of-introduced-fish
Carbon to phosphorus content in periphyton had a weak negative relationship with invertebrate richness at the local scale (g) but a strong negative relationship at the regional scale (h). Points represent average values and are colored based on site with line of best fit with grey shading of 95% confidence interval. From: Tumolo, B. B., Collins, S. M., Guan, Y., & Krist, A. C. (2023). Resource quantity and quality differentially control stream invertebrate biodiversity across spatial scales. Ecology Letters, 26(12), 2077-2086.
Ecological stoichiometry: We study ecological stoichiometry - the balance of chemical elements in organisms and their environments - to address diverse ecological and evolutionary questions. For example, our work has addressed topics ranging from how the elemental composition of hosts affects parasite stoichiometry and reproductive success (Narr and Krist 2015), how response to elemental limitation can affect invasion success (Tibbets et al. 2010, Neiman and Krist 2016), how phosphorus limitation differentially affects organisms with different ploidy levels (Neiman et a. 2013) and how the stoichiometry of resources controls invertebrate biodiversity in streams (Tumolo et al. 2023).
Invasion biology of the freshwater snail, Potamopyrgus antipodarum (the New Zealand mudsnail): We study factors that mitigate the invasion success of Potamopyrgus (Krist and Charles 2012, Levri et al. 2014, Hansen et al. 2016, Larson et al. 2020 Aquatic Ecology, Larson and Krist 2020, Larson et al. 2023 ) and the effects of Potamopyrgus on native organisms and ecosystems (Greenwood et al. 2020, Larson et al. 2020 PLoS ONE).
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