The work I conduct together with my students at the University of Wisconsin-Milwaukee is focused on the habitat requirements, ecology and reproduction of fishes and aquatic macroinvertebrates of north temperate lakes and streams.  My laboratory is equipped for fish and invertebrate population assessments, physical and hydrological habitat analyses, and water nutrient chemistry.

We are actively involved in the conservation and reestablishment of native fishes in Wisconsin.  Projects include the design and implementation of stream restoration and rehabilitation plans, the ecology of rare and threatened species, genetic differentiation of exploited fishes, and the effects of exotic species invasions on native fauna.

My research examines the habitat, physiological, feeding, and reproductive factors necessary for self-sustaining fish populations, and I have special expertise with sunfishes, darters, and salmonids