Libby Mohr is a Ph.D. student in the department of Land, Resources, and Environmental Sciences at Montana State University. She uses modeling and experimental approaches to study biogeochemical cycling in streams and rivers.
Ph.D. Candidate in Ecology and Environmental Sciences, 2017-Present
Montana State University
B.S. in Applied Science, 2015
Washington University in St. Louis
Water quality in streams, rivers, and lakes depends on the biotic cycling of carbon and nutrients. Yet scientists and managers lack a robust theory to predict rates of carbon and nutrient transformation to inform water quality management decisions.
Net-spinning caddisfly (Hydropsychidae) larvae are ecosystem engineers whose nets can both alter streambed hydrologic properties and create a novel habitat for microbial communities (MacDonald et al., 2020). Streambed hydrologic exchange and microbial biofilms both influence processing of organic matter and nutrients, so might the net-spinning activities of caddisflies provide an indirect control on water quality?
Hyporheic zones (areas along and below the streambed that exchange water with the stream channel) provide habitats for microorganisms and host chemical gradients that together spur a variety of chemical reactions.