Status and Trends

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Amphibians+Frogs & Toads+Protocols
(Frogs, Toads, and Salamanders) - The continental United States is home to at least 230 amphibian species: 90 frog and toad species, and 140 species of salamanders. Amphibians appear in cities and in natural areas, as well as rainforests and in wetlands. Healthy amphibian populations that once thrived are now on the decline worldwide. In the U.S. alone, declines in amphibian populations are particularly serious in California, the Rocky Mountains, the Southwest, and Puerto Rico. This decline has been a result of amphibian malformations - extra limbs, malformed or missing limbs, and facial malformations. These malformations have been documented in 44 states, and involve nearly 60 species. In some local populations, up to 60% of the amphibians exhibit malformations.

Did You Know...?

USGS Frog Quiz
You can identify different amphibian species by their unique vocalizations or "frog calls." Not all amphibian species make vocalizations, but many frogs and toads do.

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North American Amphibian Monitoring Program (NAAMP)

Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL

www.pwrc.usgs.gov — This web resource is a collaborative effort among regional partners, such as state natural resource agencies and nonprofit organizations, and the U.S. Geological Survey (USGS) to monitor populations of vocal amphibians. Amphibian population data are collected using a calling survey technique, in which observers identify local amphibian species by More...

Patuxent Wildlife Research Center, North American Amphibian Monitoring Program

Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL

www.pwrc.usgs.gov — The NAAMP is a collaborative effort among regional partners, such as state natural resource agencies and nonprofit organizations, and the U.S. Geological Survey (USGS) to monitor populations of vocal amphibians. The USGS provides central coordination and database management. The regional partners recruit and train volunteer observers to collect More...