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Survival Rates of Cassin's and Rhinoceros Auklets at Triangle Island, British Columbia
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bertram, Douglas F. Jones, Ian L. Cooch, Evan G. Knechtel, Hugh A. Cooke, Fred |
| Copyright Year | 2000 |
| Abstract | Abstract We estimated survival of Cassin's Auklet (Ptychoramphus aleuticus) and Rhinoceros Auklet (Cerorhinca monocerata) 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 large 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. |
| Starting Page | 155 |
| Ending Page | 162 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| Volume Number | 102 |
| Alternate Webpage(s) | http://canuck.dnr.cornell.edu/research/pubs/pdf/triangle_surv.pdf |
| Alternate Webpage(s) | https://yorkspace.library.yorku.ca/xmlui/bitstream/handle/10315/13795/Article040.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://doi.org/10.1650/0010-5422%282000%29102%5B0155%3ASROCSA%5D2.0.CO%3B2 |
| DOI | 10.1650/0010-5422%282000%29102%5B0155%3ASROCSA%5D2.0.CO%3B2 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
