期刊
SCIENCE
卷 357, 期 6347, 页码 199-201出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aal4122
关键词
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资金
- European Research Council
- Spanish Ministry of Education through a Formacion Personal Universitario Ph.D. fellowship
- Natural Sciences and Engineering and Research Council (NSERC) of Canada
- NSERC
- Quebec Centre for Biodiversity Science
- Canada Research Chair program
- Liber Ero Chair in Conservation Biology
- Killam Fellowship
Networks with a modular structure are expected to have a lower risk of global failure. However, this theoretical result has remained untested until now. We used an experimental microarthropod metapopulation to test the effect of modularity on the response to perturbation. We perturbed one local population and measured the spread of the impact of this perturbation, both within and between modules. Our results show the buffering capacity of modular networks. To assess the generality of our findings, we then analyzed a dynamical model of our system. We show that in the absence of perturbations, modularity is negatively correlated with metapopulation size. However, even when a small local perturbation occurs, this negative effect is offset by a buffering effect that protects the majority of the nodes from the perturbation.
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