Bear Creek is a tributary of the Tennessee River in northwestern Alabama and northeastern Mississippi. The watershed supports diverse freshwater mussel assemblage including several species conservation concern. We conducted survey at 55 sites Mississippi portions its largest tributary, Cedar Creek, during September October 2020. found total 30 species, which 25 were represented by live individu...

The shells of freshwater molluscs are highly plastic in response to environmental and ecological conditions, which can affect interactions ecosystem functioning. We tested for changes relative shell thickness the unionid bivalve Elliptio complanata tidal Hudson River over 1991–2017, a period changing water chemistry predation pressure. Shells both juveniles (shells <20 mm long) larger animals b...

The zebra mussel, Dreissena polymorpha, a nonindigenous invasive species, is now widespread throughout the eastern half of North America. Because zebra mussels are ubiquitous and because they effectively filter particulate matter out of suspension, the cycling and residence times of particle-reactive metals will likely be affected in waters with zebra mussels. This study describes experiments d...

Lake Mendota, which is plagued by periodic cyanobacterial blooms, is typical of many lakes in the Laurentian Great Lakes region that are vulnerable to zebra mussels (Dreissena polymorpha) but have yet to be invaded. We coupled removal estimates with chlorophyll production estimates in a dynamic model to predict the likely impact of mussel-mediated removal of phytoplankton on water clarity acros...

We investigated the role of a macrograzer (the filter feeding mussel Dreissena polymorpha) in mediating effects of high summer temperatures on the dominant components of natural river plankton (i.e., bacteria, algae, and heterotrophic flagellates) in flow channel experiments. Effects of adaptation (by comparing mussels from a southern and a northern population) and thermal acclimation of the mu...