Greater Sage-grouse in the Bi-state Distinct Population Segment: an Evaluation of Genetic Structure, Connectivity, and Vital Rates in Mono County, California Thesis uri icon

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abstract

  • Thesis (M.S., Natural Resources)--University of Idaho, June 2014 | The Bi-State Distinct Population segment (DPS) of greater sage-grouse (Centrocercus urophasianus) is genetically and geographically isolated from populations in other portions of the species range. In 2013, the Bi-State DPS was proposed to receive threatened status under the Endangered Species Act. To aid in conservation of this DPS we evaluated population genetic substructure, dispersal, and vital rates, including female survival, nest success, and brood survival. From 2007-2012, we radio-marked and monitored 112 greater sage-grouse and collected genetic data at 17 microsatellite loci for 334 individuals. We found evidence for 5 genetic populations. With telemetry data we did not document movements between populations but found genetic evidence that 10 individuals were likely recent dispersers. Female seasonal survival was highest during the winter and lowest during the breeding season, ranging from 0.68-0.97. Daily survival rate of nests decreased over the nesting season, ranging from 0.986-0.918. Apparent brood survival ranged from 30-100%.

publication date

  • June 1, 2014

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