Demographic rates of two southeastern populations of Painted Bunting, 2007–2015
| Autor: | David T. Cobb, Jaime A. Collazo, Liani M. Yirka, James A. Rotenberg, John A. Gerwin, Brian J. O'Shea |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | The Condor. 120:319-329 |
| ISSN: | 1938-5129 0010-5422 |
| Popis: | Painted Buntings (Passerina ciris) have been declining in the southeastern United States since the 1970s. A recent demographic assessment highlighted the importance of estimating demographic parameters, which have received little attention to date. The dearth of information is troublesome because attempts to reverse declining trends require a better understanding of the relationship between habitat quality and age- and sex-specific survival and recruitment rates. We used capture–mark–recapture data collected from 2007 to 2015 on Bald Head Island (BHI) and at Hammocks Beach State Park (HBSP) in North Carolina, USA, to estimate local age- and sex-specific annual survival rates and local population size and recruitment rates using programs MARK and LOLASURVIV. Juveniles had lower local survival rates than adults (HBSP: 0.28 ± 0.14 vs. 0.67 ± 0.06; BHI: 0.28 ± 0.04 vs. 0.57 ± 0.02). Local annual survival rates for males on BHI (0.50 ± 0.03) were lower than those for females (0.57 ± 0.02). Age-specifi... |
| Databáze: | OpenAIRE |
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