Survival Rates of Cassin's and Rhinoceros Auklets at Triangle Island, British Columbia
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چکیده
منابع مشابه
Survival Rates of Cassin’s and Rhinoceros Auklets at Triangle Island, British Columbia1
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 6 0.047) than for Rhinoceros Auklet (0.829 6 0.095). Our estimate of survival appears lower ...
متن کاملEnvironmental control of the breeding success of rhinoceros auklets at Triangle Island, British Columbia
There are few studies of the mechanistic links between physical environmental processes and biotic responses in marine ecosystems that have strong predictive power. At Triangle Island, the largest seabird colony along Canada’s Pacific coast, annual breeding success of rhinoceros auklets Cerorhinca monocerata varies dramatically. Previous studies have correlated this variability with ocean tempe...
متن کاملGenetic structure of rhinoceros auklets, Cerorhinca monocerata, breeding in British Columbia, Alaska, and Japan
The rhinoceros auklet (Cerorhinca monocerata) breeds on islands in the North Pacific from California to Japan. Breeding colonies are not evenly distributed along the coastline nor are population numbers similar throughout the range with approximately 50 % of the birds breeding in British Columbia, Canada (Rodway 1991). Like other puffins (tribe Fraterculini), rhinoceros auklets lay a single-egg...
متن کاملBiology of Black Oystercatchers Breeding on Triangle Island , British Columbia , 2003 – 2011
The breeding biology of the Black Oystercatcher (Haemotopus bachmani) was studied on Triangle Island, British Columbia, Canada in 2003–2011. Breeding density at this remote site was relatively high, ranging from 2.23 to 3.72 pairs/km of shoreline in the 9 y. Most clutches were initiated in the last 2 wk of May, and the annual mean 1st clutch size ranged from 2.1 to 2.8 eggs/ nest, values simila...
متن کاملSurvival and dialysis initiation: comparing British Columbia and Scotland registries.
BACKGROUND Outcomes are a major metric for evaluating effectiveness of dialysis. Comparisons between different populations reveal significant variation. In addition, the question of optimal timing of dialysis start lacks robust data from which to generate conclusions. METHODS This study compares dialysis survival in two geographically similar areas, Scotland and British Columbia, Canada (BC)....
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ژورنال
عنوان ژورنال: The Condor
سال: 2000
ISSN: 0010-5422,1938-5129
DOI: 10.1093/condor/102.1.155