Research Interests: Macroinvertebrate taxonomy, study design and implementation, and bioassessment using fish and invertebrate communities.

Research Interests: Environmental Science

Research Interests: Systematic biology, limnology and phycology, ecology and biology of freshwater algae.

Research Interests: Ecology, vertebrate animal ecology.

Research Interests: Coastal oceanography, hydrogeology, aqueous environmental geochemistry, and GIS.

Research Interests: Appalachian debris fans, Virginia Barrier Islands, and the geomorphology of Mars.

Research Interests: Three-dimensional particle tracking velocimetry in homogeneous and heterogeneous porous material, groundwater and solute transport modeling, and bioremediation.

Research Interests: Rivers, fish and insect habitat use, Environmental Monitoring and Assessment, Environment-Industry Relations, and Exotic Species (introduction and control).

Research Interests: Stream ecosystem structure and function in response to landscape and watershed properties; Passive recovery, active restoration, and preservation of stream ecosystems; Land use trends of the eastern United States; Physicochemistry, macroinvertebrates, organic matter dynamics, and stream metabolism.

Research Interests: Natural Stream Channel Design; zoological interests include research on the giant hellbender salamander, an inhabitant of streams and rivers in Pennsylvania, behavior, population dynamics, reproduction, growth, food habits, and genetic diversity).

Research Interests: Environmental Health, Epidemiology, Behavioral Health, Outcomes, and Pharmacogentics.

Research Interests: nutrient cycles, soil water, and chemical movement. I am presently studying nutrient cycles and processes in heated soil above the Centralia mine fire, and water quality conditions in urban and created wetlands.

Research Interests: Stream ecology but mainly focus on the role that microorganisms such as algae, bacteria, and fungi play in regulating stream ecosystem function and how human impacts can alter these dynamics. My lab is currently investigating how impacts such as acid mine drainage from abandoned coal mines alters stream ecosystem functions such as the decomposition of organic matter and uptake and mineralization of nitrogen and phosphorus.

Research Interests: medieval literature, Celtic studies, and literature and the environment.

Research Interests: land-use planning and design, pre-construction site investigations, water-well and septic system siting, drainage-basin analyses and flooding hazards, sink-hole delineation and karst-terrain analysis, slope- and foundation-stability problems, surface and ground-water contamination, radon detection and remediation strategies, topographic-, geologic and soils-map interpretation, geotechnical report generation and review, and geological education

Research Interests: stream ecology and restoration, wetland ecology and wastewater biology.

SEDA-Council of Governments

Northcentral Pennsylvania Conservancy

The Forum for Pennsylvania's Heartland

WKOK/Sunbury Broadcasting Corporation

Chesapeake Bay Foundation

Pennsylvania Department of Environmental Protection

Geisinger Health System

Trout Unlimited

Geisinger Health System