Direct evidence of the impact of longline fishery on mortality in the Black-footed Albatross Phoebastria nigripes
Direct evidence of the impact of longline fishery on mortality in the Black-footed Albatross Phoebastria nigripes
复制标题
延绳钓渔业对黑脚信天翁 Phoebastria nigripes 死亡率影响的直接证据
DOI：
10.1017/s0959270912000299
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发表时间：
2012
影响因子：
1.6
通讯作者：
S. Véran
中科院分区：
文献类型：
--
作者：
J. Lebreton;S. Véran
延绳钓渔业附带附带捕获海鸟是人类活动对脊椎动物物种的扩散性和附带性影响的最突出例子之一。虽然有各种证据表明延绳钓渔业对海鸟，特别是信天翁产生了强烈影响，但附带的副渔获物死亡率从未与船上调查得出的副渔获物估计数直接联系起来。我们开发了一个捕获-再捕获分析，它涉及到黑脚信天翁的生存概率估计绝对兼捕。通过将绝对兼捕转换为相对于种群大小的估计，并使用理论的开发种群，我们表明，生存概率与兼捕线性下降，兼捕被低估了至少50%，确认怀疑的基础上审查的兼捕调查程序，并提出进一步关注延绳钓渔业对海鸟的影响。
Summary The incidental bycatch of seabirds in longline fisheries is one of the most striking examples of diffuse and incidental impact of human activities on vertebrate species. While there are various types of evidence of a strong impact of longline fisheries on seabirds, in particular albatrosses, the incidental bycatch mortality has never been directly linked to estimates of bycatch derived from on-board surveys. We develop a capture-recapture analysis which relates the annual probability of survival in the Black-Footed Albatross to the estimated absolute bycatch. By converting the absolute bycatch into an estimate relative to population size and using the theory of exploited populations, we show that survival probability decreases linearly with bycatch, and that the bycatch is underestimated by at least 50%, confirming suspicions based on reviews of the bycatch survey procedures, and raising further concerns about the impact of longline fisheries on seabirds.