Skip to main content
Citizen science reveals widespread negative effects of roads on amphibian distributions
Biological Conservation (2014)
  • Karen H. Beard, Utah State University
Landscape structure is important for shaping the abundance and distribution of amphibians, but prior studies of landscape effects have been species or ecosystem-specific. Using a large-scale, citizen science-generated database, we examined the effects of habitat composition, road disturbance, and habitat split (i.e. the isolation of wetland from forest by intervening land use) on the distribution and richness of frogs and toads in the eastern and central United States. Undergraduates from nine biology and environmental science courses collated occupancy data and characterized landscape structure at 1617 sampling locations from the North American Amphibian Monitoring Program. Our analysis revealed that anuran species richness and individual species distributions were consistently constrained by both road density and traffic volume. In contrast, developed land around wetlands had small, or even positive effects on anuran species richness and distributions after controlling for road effects...
Publication Date
Publisher Statement
Citation Information
Karen H. Beard. "Citizen science reveals widespread negative effects of roads on amphibian distributions" Biological Conservation Vol. 180 (2014)
Available at: