Apparent Survival Estimates for Five Species of Tropical Birds in an Endangered Forest Habitat in Western Ecuador 1
Apparent Survival Estimates for Five Species of Tropical Birds in an Endangered Forest Habitat in Western Ecuador 1
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厄瓜多尔西部濒危森林栖息地中五种热带鸟类的表观生存率估计 1
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Ágreda
中科院分区：
文献类型：
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作者：
T. Parker;C. D. Becker;B. Sandercock;A. Ágreda
估计每年的生存是必不可少的，以解决在进化和保护生态学的主题。然而，大多数陆地鸟类的人口统计学研究都是基于北温带物种，很少有可靠的估计生存的基础上标记重捕统计数据可用于南美洲大陆鸟类。我们使用自标记以来的时间模型来估计科隆什山7年雾网数据中成年鸟类的表观存活率。这是厄瓜多尔西南部仅存的大片山地森林之一，也是鸟类保护的优先地区。有足够数据进行分析的物种包括三种蜂鸟（Adelomyia melanogenys、Heliodoxa jacula、Phaethornis baroni）、一种杜父丁鸟（Schiffornis turdinus）和一种鹪鹩（Henicorhina leucophrys）。我们的参数估计精度降低，因为重新捕获的数量很少。三个鱼种的重捕概率较低，另外两个鱼种的重捕概率中等。Adelomyia和Phaethornis有中度明显的生存（概率，一只鸟既没有死亡，也没有从我们的调查区域在给定的一年）。Adelomyia的成年人季节性移动，这是可能的，从我们的调查区域的永久性移民造成的低估计明显的生存。其他三个物种对成虫表观存活率的估计相对较高，从Heliodoxa和Schiffornis到Henicorhina的估计较高。
Estimates of annual survival are essential for addressing topics in evolutionary and conservation ecology. However, most demographic studies of land birds are based on north temperate species, and few robust estimates of survival based on mark–recapture statistics are available for continental South American birds. We used time‐since‐marking models to estimate apparent survival of adult birds from 7 yr of mist netting data in the Colonche Hills. This site is one of few remaining large tracts of premontane forest in southwestern Ecuador, and an area of high priority for avian conservation. Species with sufficient data for analysis included three hummingbirds (Adelomyia melanogenys, Heliodoxa jacula, Phaethornis baroni), a cotinga (Schiffornis turdinus), and a wren (Henicorhina leucophrys). Our parameter estimates had reduced precision because the number of recaptures was small. Probability of recapture was low in three species , and moderate in two others . Adelomyia and Phaethornis had moderate apparent survival (; probability that a bird neither died nor emigrated from our survey area in a given year). Adults of Adelomyia moved seasonally, and it is possible that permanent emigration from our survey area contributed to low estimates of apparent survival. The other three species had relatively high estimates of adult apparent survival ranging from in Heliodoxa and Schiffornis to a high of in Henicorhina.