My ongoing research includes vertebrate and invertebrate ecology in rivers. In particular, I am interested in the habitat use of fish, insects, and snails in the Susquehanna River. I am also involved in monitoring the river for invasive bivalves (Asiatic clams and zebra mussels).

Current studies include an investigation of the incidence of black spot disease in Susquehanna River fishes, a survey of the genetic variation of the spotfin shiner from the Susquehanna River, and the environmental implications of wind farms in Pennsylvania.

I received an $110,000 grant in 2002 from the Pennsylvania Department of Environmental Protection to perform a stream reclamation of the Little Wapwallopen Creek in Luzerne County. This project will be funded for three years and will involve the application of fluvial geomorphological methods. Students will be involved in many phases of this project including water quality monitoring, and fish and insect collection.

______. 1992. Oviposition of the dobsonfly (Corydalus cornutus Megaloptera) on a large river. Am. Midl. Nat. 127: 348-354.

______. 1994. Pupation ecology of the dobsonfly Corydalus cornutus (Corydalidae: Megaloptera) along a large river. J. Freshwater Ecology 9(1): 57-62.

______. 1997. Long-term retention of a radio transmitter by a muskellunge. J. Freshwater Ecology. 13(4): 485-487.

______. 2002. Range expansion of the Asiatic clam, Corbicula fluminea, into the North Branch of the Susquehanna River. J. Pa. Acad. Sci. 76(1): 40-42.

______. 2003. A field evaluation of the efficiency of rotenone-laced fish food for removing fish from a small artificial impoundment. J. Freshwater Ecology 18(2): 299-303.