Freshwater Systems and Warmth: Response Dynamics in L. sicilis and Potential Future Insights
Capsey, Kaiden
Capsey, Kaiden
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Abstract
Copepods are aquatic crustaceans essential for converting algae into biomass and responding to temperature changes. They inhabit nearly all freshwater ecosystems and play a critical role in food webs by linking microscopic algae to larger organisms such as fish. The thermal tolerance dynamics of zooplankton in freshwater systems remain understudied, revealing a knowledge gap regarding their responses. Winter climate warming significantly affects interactions within these systems. Given their ecological importance, understanding copepods� responses to environmental changes is vital for assessing ecosystem stability in the context of climate change and cold-season warming. This study investigates whether exposure to elevated temperatures enhances copepods� heat tolerance. Specifically, it tests the hypothesis that short-term prior exposure enables copepods to adjust to higher temperatures. Wild-caught copepods were acclimated to 5�C above their collection temperature for five days and then returned to collection temperature one day before undergoing a Critical Thermal Maximum assay alongside control individuals to determine thermal limits. By analyzing changes in heat tolerance following exposure, this research aims to clarify how cold-adapted aquatic organisms might adapt to rising environmental temperatures and provide insight into their potential to buffer ecosystem responses.
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Date
1/1/2026
Student Status
Junior (Graduating in 2027)
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Poster
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Program/Major
Biology: Ecology and Evolution
College/School
College of Arts and Sciences
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Life Science