North American Breeding Bird Survey (BBS) is a cooperative program that monitors the status and trends of North American bird populations. Includes files of results, analyses, route collection maps and raw data.
Homepage for the Northern Prairie Wildlife Research Center, Jamestown, ND, with links to announcements, science prgorams, biological resources finder, publications search option, contacts, and answers to common questions about the Center
Retrieval system to locate websites on publications and compilations on biological resources. Searches can be made by type, such as checklists, distribution, and regional overviews, by taxon, and by geography, including global, U.S., and Canada.
Information on the Gap Analysis Program in Ohio, a geographic approach to planning for biological diversity by mapping native aquatic and terrestrial animal species and natural communities on present-day conservation lands.
Biomonitoring projects studying the status and trends of the nation's environmental resources and programs studying amphibians and birds. Links to long-term programs, resources and references, and related links.
Links to ornithology programs at Patuxent Wildlife Research Center, Laurel, MD, including large scale survey analysis of bird populations, research tools, datasets and analyses, bird identification, and seasonal bird lists.
One of the greatest challenges for conserving grassland, prairie scrub, and shrub-steppe ecosystems is maintaining prairie dog populations across the landscape. Of the four species of prairie dogs found in the United States, the Utah prairie dog (Cynomys
Life history and identification of Salvinia species, a floating, rootless tree fern and a noxious aquatic weed. Site includes posters, instructions on submitting sightings, how to subscribe to a listserv on the weed, and a bibliography.
U.S. Department of the Interior |
U.S. Geological Survey