Brent M. Tweedy
PhD Student, GAAN Fellow, Wethington Fellow
Stream Ecology Lab
B.S. Oklahoma Baptist University
M.S. Texas Christian University
Freshwater ecosystems are especially vulnerable to the buildup of toxic chemicals. Toxins deposited in low levels across a watershed become concentrated in the streams, lakes, and rivers they wash into, adversely affecting the health of aquatic organisms. Freshwater mussels stand out among these organism due to their pivotal role in many important ecosystem functions and because many North American species are threatened or endangered. While at OU, I plan to investigate how sublethal concentrations of toxins affect mussels and how these effects might cascade throughout the ecosystem.