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Thomas J Kwak

Abstract (from http://onlinelibrary.wiley.com/doi/10.1111/fwb.12290/abstract): Freshwater mussels (Unionidae) are a highly imperilled faunal group. One critical threat is thermal sensitivity, because global climate change and other anthropogenic activities contribute to increasing stream temperature and altered hydrologic flow that may be detrimental to freshwater mussels. We incorporated four benthic environmental components – temperature, sediment, water level (a surrogate for flow) and a vertical thermal gradient in the sediment column – in laboratory mesocosm experiments with juveniles of two species of freshwater mussels (Lampsilis abrupta and Lampsilis radiata) and tested their effects on survival, burrowing...
Climate change is an important factor affecting fish globally. This site provides a comprehensive database of peer-reviewed literature available on how climate change has impacted and will continue to impact inland fishes worldwide. These studies have been compiled through an extensive, systematic primary literature review to identify English-language, peer-reviewed journal publications with projected and documented examples of climate change impacts on inland fishes globally. From this standardized database of existing literature, we can examine global patterns in climate change impacts on inland fish. Following a decision path based on knowledge of how climate has been documented to affect fish biology in five...
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No report for this QR project is available at this time. This project initially set out to expose snakeheads and flathead catfish (2 invasive fishes) to electric fields in a controlled laboratory study. This turned out to be not feasible for two reasons. Permits to hold the right species of snakeheads on campus could not be obtained, and flathead catfish of appropriate sizes that had not been previously exposed to electric fields (i.e., not captured by electrofishing) could not be attained. The objectives (and timeline) were revised to focus on food web relations for snakeheads and flathead catfish, specifically: (a) Determine trophic level and sources of prey for northern snakeheads collected from the Potomac...
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