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Forest and connectivity loss drive changes in movement behavior of bird species
Ecography ( IF 5.9 ) Pub Date : 2020-05-08 , DOI: 10.1111/ecog.04888
Danielle Leal Ramos 1 , Marco Aurélio Pizo 2 , Milton Cezar Ribeiro 1 , Rafael Souza Cruz 1 , Juan Manuel Morales 3 , Otso Ovaskainen 4, 5
Affiliation  

In a rapidly changing world, it is important to understand how environmental modifications by humans affect species behavior. This is not a simple task, since we need to deal with a multitude of species and the different external contexts that affect their behavior. Here, we investigate how interpatch short‐distance movements of 73 common forest bird species can be predicted by forest cover and forest isolation. We modeled bird movement as a function of environmental covariates, species traits – body mass and feeding habit – and phylogenetic relationships using Joint Species Movement Models. We used field data collected in forest edges and open pastures of six 600 × 600 m plots in the Atlantic Forest biodiversity hotspot. We found that birds fly larger distances and visit more forest patches and remnant trees with decreasing forest cover. Increasing landscape isolation results in larger flight distances, and it increases the use of trees as stepping‐stones for most species. Our results show that birds can adjust their behavior as a response to spatial modification in resource distribution and landscape connectivity. These adjusted behaviors can potentially contribute to ecosystem responses to habitat modification.

中文翻译:

森林和连通性丧失驱动鸟类运动行为的变化

在瞬息万变的世界中,重要的是要了解人类的环境改变如何影响物种行为。这不是一项简单的任务,因为我们需要处理众多物种以及影响其行为的不同外部环境。在这里,我们研究了如何通过森林覆盖率和森林隔离度来预测73种常见森林鸟类的斑块近距离运动。我们使用联合物种运动模型将鸟类运动建模为环境协变量,物种特征(体重和进食习惯)以及系统发育关系的函数。我们使用了在大西洋森林生物多样性热点的6个600×600 m地块的森林边缘和开放牧场中收集的野外数据。我们发现鸟类会飞越远距离,并在森林覆盖率降低的情况下探访更多的森林斑块和残余树木。越来越多的景观隔离导致更大的飞行距离,并且增加了树木作为大多数物种的垫脚石的使用。我们的结果表明,鸟类可以根据资源分布和景观连通性的空间变化来调整其行为。这些经过调整的行为可能有助于生态系统对生境的改变做出反应。
更新日期:2020-05-08
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