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首页> 外文期刊>Acta oecologica >Bat-fruit networks structure resist habitat modification but species roles change in the most transformed habitats
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Bat-fruit networks structure resist habitat modification but species roles change in the most transformed habitats

机译：蝙蝠水果网络结构抵抗栖息地修饰，但物种角色在最改变的栖息地中变化

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摘要

Species do not function as isolated entities, rather they are organized in complex networks of interactions. These networks develop the ecological processes that provide ecosystem services for human societies. Understanding the causes and consequences of changes in ecological networks due to landscape modification would allow us to understand the consequences of ecological processes. However, there is still few empirical data on the effects of network characteristics on the loss of natural environments. We investigated how bat-fruit networks respond to three landscapes representing the gradient of modification from pre-montane forest to a heterogeneous agricultural landscape in the Colombian Andes (continuous forests, forest fragments, and crops). We found that forest contained smaller bat-fruit networks than forest fragments and crops. Modified landscapes had similar ecological network structures to forest (nestedness and modularity), but crops contained less specialized networks compared to forests and fragments and the species role in these habitats were changed. The networks in the rural coffee landscape maintain their structure in the different transformation scenarios, indicating that seed dispersal services are maintained even in the most transformed scenarios. Although the number of species does not decrease due to transformations, species change their roles in the most transformed habitats. This result sheds light on the way that bat-fruit networks respond to anthropogenic transformations, showing higher stability than theoretically predicted.
机译：物种不像孤立的实体一样运行，而是在复杂的交互网络中组织。这些网络制定了为人类社会提供生态系统服务的生态过程。了解由于景观修改导致生态网络变化的原因和后果将使我们了解生态过程的后果。但是，关于网络特性对自然环境丢失的影响仍有一些实证数据。我们调查了蝙蝠水果网络如何应对三种景观，代表从哥伦比亚和哥伦比亚人（连续森林，森林碎片和作物）中的非均匀农业景观到异端农业景观。我们发现森林包含较小的蝙蝠水果网络，而不是森林碎片和庄稼。改进的景观与森林（嵌套和模块化）具有类似的生态网络结构，但与森林和碎片相比，作物包含较少的专业网络，这些栖息地的物种作用发生了变化。农村咖啡景观中的网络在不同的转变情景中保持其结构，表明即使在最转换的情况下也保持种子分散服务。虽然由于转化而没有减少物种的数量，但物种在最转型的栖息地中改变了其作用。该结果揭示了蝙蝠水果网络响应人为转化的方式，表现出比理论上预测的更高的稳定性。

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