Survival rates for Cassin's and Rhinoceros Auklets at Triangle Island, British Columbia.
| dc.contributor.author | Bertram, D.F. | |
| dc.contributor.author | Jones, I.L. | |
| dc.contributor.author | Cooch, E.G. | |
| dc.contributor.author | Knechtel, H.A. | |
| dc.contributor.author | Cooke, F. | |
| dc.date.accessioned | 2012-04-23T20:19:47Z | |
| dc.date.available | 2012-04-23T20:19:47Z | |
| dc.date.issued | 2000-02 | |
| dc.description.abstract | We estimated survival of Cassin's Auklet (Ptychoramphus aleuticus) and Rhinoceros Auklet (Cerorhincam onocerata) from recapture rates during 1994-1997. For both species, a two "age"-class model provided the best fit. Estimates of local adult survival were significantly lower for Cassin's Auklet (0.672 +/- 0.047) than for Rhinoceros Auklet (0.829 +/- 0.095). Our estimate of survival appears lower than that required for the maintenance of a stable population of Cassin's Auklets. The available information indicates that a low survival rate and a declining population at Triangle Island are plausible, particularly given the recent age scale oceanographic changes which have occurred in the North Pacific Ocean. Nevertheless, additional mark-recapture data and indexes of population size are required to rigorously demonstrate population declines at the world's largest Cassin's Auklet colony. | |
| dc.identifier.citation | The Condor 102(1):155-162. (2000) | |
| dc.identifier.uri | http://hdl.handle.net/10315/13795 | |
| dc.language.iso | en | en |
| dc.publisher | University of California Press | |
| dc.rights.article | http://www.jstor.org/stable/1370392 | |
| dc.rights.journal | http://ucpressjournals.com/journal.php?j=cond | en_US |
| dc.rights.publisher | http://ucpressjournals.com | |
| dc.subject | Alcidae | |
| dc.subject | Cassin's Auklet | |
| dc.subject | Cerorhinca monocerata | |
| dc.subject | demography | |
| dc.subject | Ptychoramphus aleuticus | |
| dc.subject | Rhinoceros Auklet | |
| dc.subject | seabird conservation and management | |
| dc.title | Survival rates for Cassin's and Rhinoceros Auklets at Triangle Island, British Columbia. | |
| dc.type | Article |