Reshaping our understanding of species' roles in landscape-scale networks
Reshaping our understanding of species' roles in landscape-scale networks
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DOI：
10.1111/ele.13292
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发表时间：
2019-09-01
期刊：
影响因子：
8.8
通讯作者：
Memmott, Jane
中科院分区：
文献类型：
--
作者：
Hackett, Talya D.;Sauve, Alix M. C.;Memmott, Jane
在网络生态学中，栖息地尺度过程往往被忽视，但越来越多的证据表明，物种和相互作用溢出栖息地之间，需要进一步研究栖息地间的依赖关系。在这里，我们调查物种如何连接马赛克的栖息地的基础上，他们的互利和拮抗作用的空间变化，使用两个多层网络，结合授粉，植食性和寄生在英国和新西兰。开发新的网络分析方法的规模生态网络，我们发现，很少有植物和传粉物种作为连接器或枢纽，无论是在栖息地内和栖息地之间，而食草动物和寄生虫通常有更多的外围网络的作用。昆虫物种的作用取决于除低营养级类群丰富度以外的其他因素，例如较大的Hytera连接不同栖息地的网络和昆虫依赖不同栖息地的不同资源。我们的研究结果为景观规模管理和生态社区保护提供了更广阔的视角。
In network ecology, landscape-scale processes are often overlooked, yet there is increasing evidence that species and interactions spill over between habitats, calling for further study of interhabitat dependencies. Here, we investigate how species connect a mosaic of habitats based on the spatial variation of their mutualistic and antagonistic interactions using two multilayer networks, combining pollination, herbivory and parasitism in the UK and New Zealand. Developing novel methods of network analysis for landscape-scale ecological networks, we discovered that few plant and pollinator species acted as connectors or hubs, both within and among habitats, whereas herbivores and parasitoids typically have more peripheral network roles. Insect species' roles depend on factors other than just the abundance of taxa in the lower trophic level, exemplified by larger Hymenoptera connecting networks of different habitats and insects relying on different resources across different habitats. Our findings provide a broader perspective for landscape-scale management and ecological community conservation.