期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 108, 期 9, 页码 3648-3652出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1014353108
关键词
complex networks; modularity; species dynamics
资金
- Consejo Superior de Investigaciones Cientificas-Junta para la Ampliacion de Estudios
- European Heads of Research Councils
- European Science Foundation
- European Community
It has recently been noted that empirical food webs are significantly compartmentalized; that is, subsets of species exist that interact more frequently among themselves than with other species in the community. Although the dynamic implications of compartmentalization have been debated for at least four decades, a general answer has remained elusive. Here, we unambiguously demonstrate that compartmentalization acts to increase the persistence of multitrophic food webs. We then identify the mechanisms behind this result. Compartments in food webs act directly to buffer the propagation of extinctions throughout the community and augment the long-term persistence of its constituent species. This contribution to persistence is greater the more complex the food web, which helps to reconcile the simultaneous complexity and stability of natural communities.
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