Aquatics
www.fish.state.pa.us PFBC Gallery of Fishes
www.anstaskforce.gov Aquatic Nuisance Species Task Force
www.pserie.psu.edu/seagrant/extension/aquatic.html PA's Sea Grant Program
www.sg.ohio-state.edu/index.html Ohio Sea Grant Program, Lake Erie
www.chesapeakebay.net Chesapeake Bay Program
www.epa.gov/surf/ EPA's Surf Your Watershed
http://nas.er.usgs.gov USGS Nonindigenous Aquatic Species
http://nas.er.usgs.gov/zebra.mussel/ USGS Zebra Mussel Information
http://grove.cs.jmu.edu/parih/ PA Herp Atlas Identification Helper
http://aquat1.ifas.ufl.edu UFL's Aquatic invasive plants
Forestry
http://www.dcnr.state.pa.us/forestry/commontr/common.htm Common Trees of PA
http://www.dcnr.state.pa.us/forestry/pests/intro.htm Common Insect and Disease Pests of PA Forests
Soils and Land Use
http://www.statlab.iastate.edu/survey/SQI/sqiinfo.html Soil Quality Information Sheets
Wildlife
http://www.pgc.state.pa.us PA Game Commission Website
http://www.ENature.com Bird Calls-Click on the dropdown menu next to site index, scroll down to bird audio.