| large-scale recovery of an endangered amphibian despite ongoing exposure to multiple stressors. | amphibians are one of the most threatened animal groups, with 32% of species at risk for extinction. given this imperiled status, is the disappearance of a large fraction of the earth's amphibians inevitable, or are some declining species more resilient than is generally assumed? we address this question in a species that is emblematic of many declining amphibians, the endangered sierra nevada yellow-legged frog (rana sierrae). based on >7,000 frog surveys conducted across yosemite national park ... | 2016 | 27698128 |
| pesticide distributions and population declines of california, usa, alpine frogs, rana muscosa and rana sierrae. | atmospherically deposited pesticides from the intensively cultivated central valley of california, usa, have been implicated as a cause for population declines of several amphibian species, with the strongest evidence for the frogs rana muscosa and rana sierrae at high elevation in the sierra nevada mountains. previous studies on these species have relied on correlations between frog population status and either a metric for amount of upwind pesticide use or limited measurements of pesticide con ... | 2011 | 21298712 |