- Senior Scientist
- Director, Central Plains Center for BioAssessment
Don’s major research interests are in ecotoxicology and community and ecosystem assessment of anthropogenic perturbations. His current research efforts are being directed toward assessment of the effects of watershed-level influences on stream ecosystems. He is investigating potential threshold responses in stream ecosystems from sediment and nutrient enrichment. One of his new areas of interests is impacts of road networks to the hydrology and ecology of headwater streams, and he continues to be interested in and use Structural Equation Modeling (SEM) and piecewise regression is ecosystem studies. He continues to work in playa and floodplain wetlands, and his new efforts focus on applicability of farm pond conversions to wetland functions for water quality benefits within agricultural landscapes.
- Aquatic ecology