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首页> 外文期刊>Marine Ornithology >PERSISTENCE RATES AND DETECTION PROBABILITIES OF BIRD CARCASSES ON BEACHES OF UNALASKA ISLAND, ALASKA, FOLLOWING THE WRECK OF THE M/V SELENDANG AYU
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PERSISTENCE RATES AND DETECTION PROBABILITIES OF BIRD CARCASSES ON BEACHES OF UNALASKA ISLAND, ALASKA, FOLLOWING THE WRECK OF THE M/V SELENDANG AYU

机译：赛伦登·阿尤M / V飞机残骸袭击后，阿拉斯加岛阿拉斯加岛沙滩上的鸟尸体的存留率和检测概率

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Mark recapture techniques were used to estimate persistence rates and detection probabilities of bird carcasses associated with the oil spill following the wreck of the M/V Selendang Ayu at Unalaska Island, Alaska. Only 14.6% of carcasses placed on beaches remained after 24 hours, and all carcasses that remained had been scavenged to some degree. Daily persistence rates for scavenged carcasses on subsequent days were substantially higher at 79.1%. Most carcasses (>98%) were removed by scavengers at night. When they made a single pass, observers searching beaches for carcasses that had washed ashore found only about 40% of carcasses known to be present. This detection probability did not vary between pairs of search teams or between beaches. Detection probability increased to about 70% when teams searched the same beach segment twice. Our data indicate that only a small fraction of beached carcasses would likely be found using standard beach survey protocols and search frequencies. These data emphasize the importance of measuring persistence and detection rates for each mortality event.
机译：在阿拉斯加Unalaska岛的Selendang Ayu M / V残骸遇难后，使用标记回收技术来估计与漏油有关的鸟类尸体的持久率和检测概率。放置在海滩上的尸体在24小时后仅剩下14.6％，并且所有残留的尸体都已进行了一定程度的清除。随后几天的尸体每日坚持率显着提高，达到79.1％。大部分尸体（> 98％）在夜间被清除剂清除。当他们一次通过时，观察者在海滩上搜寻已经冲上岸的尸体时，发现只有大约40％的尸体存在。在几对搜索团队之间或在海滩之间，这种检测概率没有变化。当团队两次搜索同一海滩段时，检测概率增加到大约70％。我们的数据表明，使用标准的海滩调查协议和搜索频率，可能只会发现一小部分搁浅的尸体。这些数据强调了测量每个死亡事件的持久性和检出率的重要性。

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