期刊论文详细信息
Endangered Species Research
Population status of the Critically Endangered waved albatross Phoebastria irrorata, 1999 to 2007
Sebastian Cruz1  W. Bryan Milstead1  Carolina B. Proaño1  Jill A. Awkerman1  Gustavo Jiménez-Uzcátegui1  Kathryn P. Huyvaert1  David J. Anderson1  Jacquelyn K. Grace1 
关键词: Annual adult survival;    Fecundity;    Galápagos;    Stochastic matrix model;    Plastic pollution;    Waved albatross;   
DOI  :  10.3354/esr00089
学科分类:动物科学
来源: Inter-Research
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【 摘 要 】

ABSTRACT: Understanding the demography of the Critically Endangered waved albatross Phoebastria irrorata is crucial for effective policy responses to recent threats, most notably fishery mortality. Using current vital rates data and a stochastic matrix model, we confirm the conclusion of Awkerman et al. (2006) that the population growth rate (λ) was less than 1 in recent years, indicating a shrinking population. Earlier comparisons of recent population size suggested that the breeding population shrunk between 1994 and 2001, but these were based on only 2 counts. A new count in 2007 indicated continued reduction in breeding population size, and the magnitude of the recent reduction was consistent with that projected by our model. New information suggests that plastic ingestion appears to pose a minor threat, if any, to this species, in contrast to the serious problems that it causes in some other albatrosses. Reduction of adult mortality in the coastal fishery appears to be the most effective means to stabilize this threatened species.

【 授权许可】

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