A Natural Areas Inventory of Berks County Pennsylvania, 1991
The inventory provides maps of the best known natural areas (natural communities) in the county and the locations of all known animal and plant species of special concern (endangered, threatened, or r...

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All Living Things
Discover Life is a field guide and a biological encyclopedia rolled into one. Sponsored by the Polistes Foundation, a team of biodiversity mavens, teachers, and other experts co-founded by ecologist J...

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Amphibia Web
AmphibiaWeb, a site inspired by global amphibian declines, is an online system that allows free access to information on amphibian biology and conservation.

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Animal Diversity Web
Animal Diversity Web (ADW) is an online database of animal natural history, distribution, classification, and conservation biology at the University of Michigan Animal Diversity Web has thousands o...

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Catalogue of Pennsylvania Biodiversity
The Catalog of Pennsylvania Biodiversity (CPB) is an initiative to produce a comprehensive, verifiable and authoritative checklist of species occurring within the state of Pennsylvania.

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Common Birds in Decline Summer 2007
Many of our most common and birds are experiencing precipitous population declines. Analyzing forty years of bird population data collected by citizen scientists for Audubon's Christmas Bird Count, co...

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County Natural Heritage Inventories
County Natural Heritage Inventories showcase WPC's conservation science efforts by combining and presenting information on unique plants, animals, natural ecological communities, and other important n...

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EPA Biological Indicators of Watershed Health
The primary uses of an indicator are to characterize current status and to track or predict significant change. With a foundation of diagnostic research, an ecological indicator may also be used to id...

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Georgia Wildlife Web
This web site provides information concerning the common species of mammals, birds, reptiles, and amphibians and aquatic invertebrates found in the State of Georgia. Each species has a home page which...

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Global Crayfish Resources
This Carnegie Museum of Natural History website provides links to global crayfish distribution, checklists, keys to North American species, and literature databases.

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