Abundance and density estimation of the American black bear population in central Georgia
| Autor: | Joshua T. Sylvest, Jared S. Laufenberg, Annaliese K. Ashley, Michael J. Hooker, Michael J. Chamberlain |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
education.field_of_study
biology Ecology Population Density estimation Management Monitoring Policy and Law biology.organism_classification Population density Abundance (ecology) biology.animal Microsatellite Animal Science and Zoology Ursus American black bear education Genotyping Nature and Landscape Conservation |
| Zdroj: | Ursus. 26:107-115 |
| ISSN: | 1938-5439 1537-6176 |
| Popis: | The Central Georgia Population (CGP) is the least abundant and most geographically isolated American black bear (Ursus americanus) population in Georgia, USA. We used DNA-based spatially explicit capture–recapture techniques to estimate density and abundance of bears in the CGP. We sampled bear hair over 2 8-week periods during the summers of 2012 and 2013 and recorded capture histories of individual bears identified via microsatellite genotyping. Population density for females was 0.123 bears/km2 (SE = 0.018) and 0.152 bears/km2 (SE = 0.024) in 2012 and 2013, respectively. Male bear density was 0.109 bears/km2 (SE = 0.015) to 0.088 bears/km2 (SE = 0.013) during the same years. Derived estimates of abundance of female bears was 125.4 (SE = 18.3) in 2012 and 154.9 (SE = 24.3) in 2013. Male bear abundance was 111.3 (SE = 15.2) and 89.8 (SE = 12.9) for 2012 and 2013, respectively. Based on these estimates and the isolated nature of the CGP, we recommend continued monitoring of demographic parameters... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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