Habitat selection and habitat quality for wintering wood thrushes in a coffee growing region in Honduras
Habitat selection and habitat quality for wintering wood thrushes in a coffee growing region in Honduras
复制标题
洪都拉斯咖啡种植区越冬画眉的栖息地选择和栖息地质量
DOI：
10.1016/j.gecco.2019.e00728
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发表时间：
2019
影响因子：
4
通讯作者：
David I. King
中科院分区：
文献类型：
--
作者：
Brett A. Bailey;David I. King
大多数新热带候鸟在一年中的大部分时间都在热带度过，一些物种的数量持续下降至少部分归因于热带越冬地的栖息地退化和破坏。许多新热带候鸟被观察到在越冬地使用一系列受干扰的、农业的和主要的森林栖息地，这些栖息地利用信息有助于我们更好地了解热带土地利用对其种群的潜在影响，以及制定保护这些物种的计划和战略。虽然栖息地特定丰度的指数和估计可以提供信息，但据报道，由于专制的与同种生物的相互作用，一些越冬候鸟在边缘生境中发生的数量类似，甚至更多。因此，栖息地特定生存的调查和其他可能与生存相关的指标是一个有价值的补充，并提供了一个更精确的栖息地质量指标。林画眉是一种新热带候鸟，在过去的半个世纪或更长时间里，它的种群数量一直在广泛下降，尽管它们的数量似乎在越冬场地受干扰的栖息地中更多，但据报道，它们在原始林中的存活率更高。我们在中美洲洪都拉斯的一个咖啡种植区用无线电遥测技术捕获和跟踪了越冬的林画眉，以评估这种物种的栖息地选择，并确定与生存、运动指标和身体状况相关的栖息地类型和微生境特征。我们发现，与森林和开阔的农业栖息地相比，林中画眉更喜欢遮荫咖啡，尽管与森林相比，浓荫咖啡中的生存和静止行为的概率较低，特别是在海拔较高的地区。我们的发现表明，假设某一物种出现在给定的栖息地实际上反映了栖息地的质量，以及在咖啡生产景观中保护森林的重要性，这一点是危险的。
Most Neotropical migrant birds spend the majority of the annual cycle in the tropics, and the continued population declines of some species is attributed at least in part to habitat degradation and destruction on the tropical wintering grounds. Many Neotropical migrants have been observed to use a range of disturbed, agricultural, and primary forest habitats on the wintering grounds, and this habitat-use information helps us better understand the potential effects of land use in the tropics on their populations as well as to develop programs and strategies to conserve these species. Although indices and estimates of habitat-specific abundance can be informative, some wintering migrants are reported to occur in similar or even greater numbers in marginal habitats due to despotic interactions with conspecifics. Thus, investigations of habitat-specific survival and other metrics potentially related to survival are a valuable supplement, and provide a more refined indicator of habitat quality. The wood thrush is a Neotropical migrant bird that has been undergoing range-wide population declines for the past half century or more, and although their numbers appear to be greater in disturbed habitats on the wintering grounds, they are reported to experience higher survival in primary forest. We captured and tracked wintering wood thrushes with radio-telemetry in a coffee growing region in Honduras, Central America, to evaluate habitat selection in this species, as well as to determine the habitat types and microhabitat characteristics associated with survival, movement metrics, and body condition. We found that wood thrushes preferred heavily-shaded coffee over forest and open agricultural habitats, although the probability of survival and of exhibiting stationary behavior was lower in heavily-shaded coffee compared to forest, especially at higher elevations. Our findings illustrate the hazards in assuming the presence of a species in a given habitat actually reflects habitat quality, as well as the importance of conserving forest within coffee producing landscapes.
DOI：
10.1098/rspb.2015.2846
发表时间：
2016-01
期刊：
Proceedings of the Royal Society B: Biological Sciences
影响因子：
--
作者：
Clark S. Rushing;T. Ryder;P. Marra
通讯作者：
Clark S. Rushing;T. Ryder;P. Marra