Wetland Occupancy of Pond-Breeding Amphibians in Yosemite National Park, USA

A five-year study (2007–2011) on pond-breeding amphibians in Yosemite National Park found contrasting trends for three species: Rana sierrae showed stable occupancy, defying recent decline concerns, while Pseudacris regilla exhibited a modest downward trend despite its widespread distribution. Anaxyrus canorus remained consistent across elevations and fish presence. The research used double-survey techniques to estimate detectability (73.7–86.7%), revealing high variability for A. canorus. Occupancy patterns were influenced by wetland size, elevation, and fish presence, with R. sierrae and P. regilla less likely in fish-inhabited sites.

Fellers, G. M., Kleeman, P. M., & Miller, D. A. W. (2015). WETLAND OCCUPANCY OF POND-BREEDING AMPHIBIANS IN YOSEMITE NATIONAL PARK, USA. Journal of North American Herpetology, 22–33. https://doi.org/10.17161/jnah.vi1.11903