Population estimates for the Toiyabe population of Columbia Spotted Frog (Rana luteiventris), 2004-10

Abstract/Summary

The Toiyable subpopulation of the Columbia spotted frog (Rana luteiventris) is located in central Nevada and is part of the Great Basin Distinct Population Segment (DPS). Columbia spotted frogs are of special concern as range-wide population declines have been documented and the species is a candidate for listing under the Endangered Species Act. Multiple state and federal agencies have cooperatively monitored this subpopulation over the last seven years, and will continue to do so in the near future. We restructured the database and estimated population parmeters using a Huggins Colosed Captures Robust Design Model. Derived estimates of population size did not show evidence of decline over the study years.