| Abstract: | Populations of Pacific common eiders (Somateria mollissima v-nigrum) breeding in Alaska, USA, have declined markedly over the past 40 years. We studied survival of adult female Pacific common eiders using capture-recapture of nesting hens at 3 sites on the Yukon-Kuskokwim Delta (YKD), Alaska from 1994 to 2004. We used data consisting of 268 recapture events from 361 uniquely marked individuals to investigate temporal, geographic, and environmental variation in adult female survival. Our results suggest apparent annual survival of adult eiders from the YKD was high (0.892, SE = 0.022) and spatially and temporally invariant (??2 = 0.005), a pattern consistent with other longlived marine birds. Moreover, our results suggest adult survival may be functionally fixed for Pacific common eiders, and at the present, adult survival may be relatively unresponsive to environmental or management perturbations. Our data did not support hypothesized variation in survival relative to mortality factors such as predation on breeding grounds, physiologic costs of reproduction, and wintering conditions. Although changes in adult survival likely have a large potential effect on prospective population growth, our results suggest viable management actions aimed at increasing survival may be extremely limited. |
| Genre: | Article |
| ProdID: | 70030618 |
| Citation Author: | Wilson, H. M.; Flint, P. L.; Moran, C. L.; Powell, A. N. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 410 |
| Citation Issue: | 2 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Journal of Wildlife Management |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 8 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Survival of breeding Pacific common eiders on the Yukon-Kuskokwim Delta, Alaska; 2007; Article; Journal; Journal of Wildlife Management; Wilson, H. M.; Flint, P. L.; Moran, C. L.; Powell, A. N. |
| Citation Start Page: | 403 |
| Citation Volume: | 71 |
| Citation Year: | 2007 |
| Type: | citation/reference |
| Text: | Survival of breeding Pacific common eiders on the Yukon-Kuskokwim Delta, Alaska; 2007; Article; Journal; Journal of Wildlife Management; Wilson, H. M.; Flint, P. L.; Moran, C. L.; Powell, A. N. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.2193/2005?776 |
| Date Other: | Mon, 1 Jan 2007 00:00 -0600 |
| Publisher: | |
