期刊
ECOLOGY LETTERS
卷 24, 期 12, 页码 2700-2712出版社
WILEY
DOI: 10.1111/ele.13892
关键词
calcareous grasslands; landscape ecology; mutualism; network theory; plant-pollinator interactions
类别
资金
- Deutsche Forschungsgemeinschaft [152112243]
The study found that interactions involving habitat specialist plants and large-bodied pollinators play a central role in plant-pollinator interaction networks. Large fragments in landscapes with high land cover diversity exhibit the highest centrality, while small fragments harbor unique interactions.
To understand how plant-pollinator interactions respond to habitat fragmentation, we need novel approaches that can capture properties that emerge at broad scales, where multiple communities engage in metanetworks. Here we studied plant-pollinator interactions over 2 years on 29 calcareous grassland fragments selected along independent gradients of habitat size and surrounding landscape diversity of cover types. We associated network centrality of plant-pollinator interactions and grassland fragments with their ecological and landscape traits, respectively. Interactions involving habitat specialist plants and large-bodied pollinators were the most central, implying that species with these traits form the metanetwork core. Large fragments embedded in landscapes with high land cover diversity exhibited the highest centrality; however, small fragments harboured many unique interactions not found on larger fragments. Intensively managed landscapes have reached a point in which all remaining fragments matter, meaning that losing any further areas may vanish unique interactions with unknown consequences for ecosystem functioning.
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