Sierra Nevada yellow-legged frog Monitoring Project
As part of our long-running partnership with the Plumas National Forest, we have been conducting frog surveys within the footprint of the 2007 Moonlight fire. We are currently monitoring the last extant genetic lineage of Diamond Mountain Sierra Nevada yellow-legged frogs (SYLF). Although trends are not great within the current population, there is hope for restoration through Plumas National Forest’s partnership with the San Francisco Zoo.
Our mission is to 1) monitor the frog population via extensive snorkeling and visual encounter surveys, and 2) locate any egg masses and/or tadpoles for immediate translocation to the San Francisco Zoo rearing facility. The goal of this project is to preserve the genetic integrity of the Diamond Mountain SYLF population by rearing the eggs/tadpoles in the zoo environment, which is free from introduced and historically stocked predatory fish populations.
Since April, PAS staff have located several new frogs and breeding pools. When we encounter SYLF, we record bio-metric data including, length, weight, sex, and tag number. This data allows us to track the growth and dispersal of frogs throughout the upper Indian creek watershed. So far, no egg masses have been detected, but our team found a singular tadpole.
PAS staff are trained and permitted to handle these endangered amphibian species. Surveys for these species should not be conducted without supervision from a qualified biologist.
Sierra Nevada yellow-legged frog (Rana sierrae)
The mission of Plumas Audubon is to promote understanding, appreciation, and protection of the biodiversity of the Feather River Region, especially birds, through education, research, and the restoration and conservation of natural ecosystems.