Wood frog embryos in a partly ice-covered Wisconsin wetland. Interconnected wetlands and uplands are critical elements of most North American landscapes and support our quality of life in profound ways. To provide much-needed information, the USGS is leading a growing network of U.S.
Mark Roth
Mark Roth
Primary Responsibilities/Activities:
As a member of the Amphibian and Reptile Team I provide assistance in the study of amphibian population statuses and threats to their persistence in the Midwest Region. My primary responsibilities are in support of the Amphibian Research and Monitoring Initiative (ARMI) and include operations in the field, laboratory, and office.
Research Interests
- Amphibian and reptile conservation
- Threatened, and endangered species
- Survey/monitoring design
- Life history and habitat characteristics of amphibians/reptiles
- Wildlife ecology
- Acoustics
Science and Products
Wood Frog Embryos in an Icy Wetland
Wood frog embryos in a partly ice-covered Wisconsin wetland. Interconnected wetlands and uplands are critical elements of most North American landscapes and support our quality of life in profound ways. To provide much-needed information, the USGS is leading a growing network of U.S.
Status and trends of Blanchard’s Cricket Frog near the northern extent of its range
Blanchard’s cricket frog ( Acris blanchardi ) is currently listed as an endangered species in Wisconsin and Minnesota, is threatened in Michigan, and has potentially declining populations in Iowa and Illinois as well as suspected declines across much of its northern range. Ware surveying frogs across four states to better understand potential distribution changes relative to surveys that occurred...
Science and Products
Wood Frog Embryos in an Icy Wetland
Wood frog embryos in a partly ice-covered Wisconsin wetland. Interconnected wetlands and uplands are critical elements of most North American landscapes and support our quality of life in profound ways. To provide much-needed information, the USGS is leading a growing network of U.S.
Wood frog embryos in a partly ice-covered Wisconsin wetland. Interconnected wetlands and uplands are critical elements of most North American landscapes and support our quality of life in profound ways. To provide much-needed information, the USGS is leading a growing network of U.S.
Status and trends of Blanchard’s Cricket Frog near the northern extent of its range
Blanchard’s cricket frog ( Acris blanchardi ) is currently listed as an endangered species in Wisconsin and Minnesota, is threatened in Michigan, and has potentially declining populations in Iowa and Illinois as well as suspected declines across much of its northern range. Ware surveying frogs across four states to better understand potential distribution changes relative to surveys that occurred...