Network structural properties mediate the stability of mutualistic communities
Key advances are being made on the structures of predator-prey food webs and competitive communities that enhance their stability, but little attention has been given to such complexity-stability relationships for mutualistic communities. We show, by way of theoretical analyses with empirically info...
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| Veröffentlicht in: | Ecology letters 2008-03, Vol.11 (3), p.208-216 |
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| container_title | Ecology letters |
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| creator | Okuyama, Toshinori Holland, J. Nathaniel |
| description | Key advances are being made on the structures of predator-prey food webs and competitive communities that enhance their stability, but little attention has been given to such complexity-stability relationships for mutualistic communities. We show, by way of theoretical analyses with empirically informed parameters, that structural properties can alter the stability of mutualistic communities characterized by nonlinear functional responses among the interacting species. Specifically, community resilience is enhanced by increasing community size (species diversity) and the number of species interactions (connectivity), and through strong, symmetric interaction strengths of highly nested networks. As a result, mutualistic communities show largely positive complexity-stability relationships, in opposition to the standard paradox. Thus, contrary to the commonly-held belief that mutualism's positive feedback destabilizes food webs, our results suggest that interplay between the structure and function of ecological networks in general, and consideration of mutualistic interactions in particular, may be key to understanding complexity-stability relationships of biological communities as a whole. |
| doi_str_mv | 10.1111/j.1461-0248.2007.01137.x |
| format | Article |
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Nathaniel</creatorcontrib><title>Network structural properties mediate the stability of mutualistic communities</title><title>Ecology letters</title><addtitle>Ecol Lett</addtitle><description>Key advances are being made on the structures of predator-prey food webs and competitive communities that enhance their stability, but little attention has been given to such complexity-stability relationships for mutualistic communities. We show, by way of theoretical analyses with empirically informed parameters, that structural properties can alter the stability of mutualistic communities characterized by nonlinear functional responses among the interacting species. Specifically, community resilience is enhanced by increasing community size (species diversity) and the number of species interactions (connectivity), and through strong, symmetric interaction strengths of highly nested networks. As a result, mutualistic communities show largely positive complexity-stability relationships, in opposition to the standard paradox. 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Psychology</subject><subject>General aspects</subject><subject>interaction strength</subject><subject>Models, Biological</subject><subject>mutualistic network</subject><subject>nestedness</subject><subject>Nonlinear systems</subject><subject>Predation</subject><subject>species diversity</subject><subject>stability</subject><subject>Synecology</subject><subject>Theory</subject><issn>1461-023X</issn><issn>1461-0248</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUuP0zAUhSMEYh7wFyBCgl2CH_GjCxajUSmgUhbMCHbWTWqDO0lTbEfT_vu5IVWR2IA3vpK_c3V8TpbllJQUz9tNSStJC8IqXTJCVEko5arcP8rOTw-PTzP_fpZdxLghhLKZok-zM6qJIpTQ82y1sum-D3d5TGFo0hCgzXeh39mQvI15Z9ceks3TT4sE1L716ZD3Lu-GNEDrY_JN3vRdN2z9KHiWPXHQRvv8eF9mt-_nN9cfiuWXxcfrq2XRSK1VYauGAa1qQWpNwUkFSgNRbi2qegYVjsBmFCwX4JwUoqLcMcqkFFooa9f8Mnsz7UWvvwYbk-l8bGzbwtb2QzSKMKWlYP8EaaUxE8YRfPUXuOmHsMVPGEa4VIKIEdIT1IQ-xmCd2QXfQTgYSszYjNmYMXQzFmDGZszvZswepS-O-4caU_0jPFaBwOsjALGB1gXYNj6eOIaLiJQKuXcTd-9be_hvA2a-nI8T6otJj-XZ_UkP4c7gdiXMt9XCsBX__IktFuYG-ZcT76A38COgp9uv6IYTorEYjO4Bo0bBOg</recordid><startdate>200803</startdate><enddate>200803</enddate><creator>Okuyama, Toshinori</creator><creator>Holland, J. 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| subjects | Animal and plant ecology Animal, plant and microbial ecology Animals Asymmetry Biological and medical sciences community structure complexity Computer Simulation connectivity degree Ecology Ecosystem Food chains food web Fundamental and applied biological sciences. Psychology General aspects interaction strength Models, Biological mutualistic network nestedness Nonlinear systems Predation species diversity stability Synecology Theory |
| title | Network structural properties mediate the stability of mutualistic communities |
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