Survival rates for Cassin's and Rhinoceros Auklets at Triangle Island, British Columbia.

dc.contributor.authorBertram, D.F.
dc.contributor.authorJones, I.L.
dc.contributor.authorCooch, E.G.
dc.contributor.authorKnechtel, H.A.
dc.contributor.authorCooke, F.
dc.date.accessioned2012-04-23T20:19:47Z
dc.date.available2012-04-23T20:19:47Z
dc.date.issued2000-02
dc.description.abstractWe 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.citationThe Condor 102(1):155-162. (2000)
dc.identifier.urihttp://hdl.handle.net/10315/13795
dc.language.isoenen
dc.publisherUniversity of California Press
dc.rights.articlehttp://www.jstor.org/stable/1370392
dc.rights.journalhttp://ucpressjournals.com/journal.php?j=conden_US
dc.rights.publisherhttp://ucpressjournals.com
dc.subjectAlcidae
dc.subjectCassin's Auklet
dc.subjectCerorhinca monocerata
dc.subjectdemography
dc.subjectPtychoramphus aleuticus
dc.subjectRhinoceros Auklet
dc.subjectseabird conservation and management
dc.titleSurvival rates for Cassin's and Rhinoceros Auklets at Triangle Island, British Columbia.
dc.typeArticle

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