ARMI » Home

» State of the Amphibians


News & Stories
Northern Leopard frog (Lithobates pipiens) in a wetland in Worth County, Iowa. Scientists track 72 northern leopard frogs in two wetlands in an agricultural setting in Iowa for insights into where and when individual adult frogs are likely exposed to pesticides. Exploring the amphibian exposome in an agricultural landscape using telemetry and passive sampling

By: Swanson JE; Muths E; Pierce CL; Dinsmore SJ; Vandever MW; Hladik ML; Smalling KL; September 11, 2018

USGS and Iowa State University scientists quantified Northern Leopard frog exposure to pesticides in aquatic and terrestrial habitats using a novel combination of radio telemetry and passive sampling techniques to better understand factors affecting frog health and survival in agricultural landscapes. The results of this newly published research can inform conservation strategies by providing info(...more)
adult salamander in cave stream Collaborative ARMI work first step in status assessment for cave salamander

By: Grant E; Brand A; September 11, 2018

As part of a partnership with the USFWS, WV Division of Natural Resources, and The Nature Conservancy, Northeast ARMI staff and a USGS Water Resources hydrologist conducted a field survey in late August for the WV spring salamander, a rare amphibian with known range limited to a single cave in WV. This work is an important contribution of the status assessment for the species, which has been propo(...more)
Invasive crayfish in southern California Invasive crayfish wreck havoc on amphibians in southern California, and now its clear they also increase mosquito larvae.

By: Bucciarelli GM; Suh D; Davis A; Roberts D; Sharpton D; Shaffer HB; Fisher RN; Kats LB; August 20, 2018

Previous work by ARMI scientists have shown the important impact of invasive crayfish (Procambarus clarkii) on endangered and threatened amphibian species in southern California ( ). New published research has shown that these non-native predators may increase disease vectors (e.g. mosquitoes) through predation on native predators of(...more)

A view of ARMI
Through the eyes of ARMI

ARMI Mission Statement

In response to indications of worldwide declines in amphibian populations, the President and Congress directed Interior Department agencies to initiate a national program of amphibian monitoring, research, and conservation. There is an urgent need to determine the scope and severity of the problem and to investigate causes. The U.S. Geological Survey is uniquely qualified to coordinate and lead a cooperative national effort because its scientists have been in the forefront of studying amphibian populations and life history traits, measuring and monitoring environmental characteristics, and conducting research into potential causes of decline. As a result, the Agency formed the National Amphibian Research and Monitoring Initiative (ARMI).

ARMI Goals and Objectives

  • » Relate Status and trends of amphibians to management options at the scale of management units.
  • » Identify causes of declines.
  • » Provide essential scientific information to support effective management actions to arrest or reverse declines.