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Life Sciences Commons

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Ecology and Evolutionary Biology

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University of South Dakota

2021

Selenium

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Impacts Of Environmental And Anthropogenic Stressors On Amphibian Welfare, Diversity, And Distribution In The Upper Missouri River Basin, Kaitlyn Campbell Dec 2021

Impacts Of Environmental And Anthropogenic Stressors On Amphibian Welfare, Diversity, And Distribution In The Upper Missouri River Basin, Kaitlyn Campbell

Dissertations and Theses

Climate change and anthropogenic stressors have contributed to rapid declines among various taxonomic groups; however, amphibian declines have been particularly intense and primarily stemmed from warming temperatures, habitat loss, exposure to contaminants, disease, and their subsequent interactions. Several climate mitigation strategies, like Bioenergy with Carbon Capture and Storage, have been proposed to alleviate the impact of rising temperatures; however, these proposals often fail to recognize and quantify the true impact on fauna, including changes in species distributions. To address this critical gap in knowledge, this research identified current amphibian distributions in the Upper Missouri River Basin and projected distribution changes …


Selenium Burdens In Painted Turtles (Chrysemys Picta), Holly A. Gerberding May 2021

Selenium Burdens In Painted Turtles (Chrysemys Picta), Holly A. Gerberding

Honors Thesis

Tile drain systems are a critical advancement in agriculture that move excess water from crop fields to streams, ditches, and wetlands. Selenium is a necessary mineral but is considered toxic at high levels. Previous research indicates that wetlands with tile drains are at a higher risk for elevated selenium concentrations. Selenium enters the aquatic ecosystem via these tile systems and us taken up by invertebrates and continues to bioaccumulate mainly via direct transfer in higher trophic level taxa such as fish, amphibians, reptiles, birds, and mammals. For this study, painted turtles (Chrysemys picta) served as a model organism to …