Press perturbations and indirect effects in real food webs
8 pages, 2 figures,3 tables
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| Format: | artículo biblioteca |
| Language: | English |
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Ecological Society of America
2009-09
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| Subjects: | Connectance, Food webs, Indirect effects, Inverse Jacobian matrix, Linkage density, Press perturbation, Specialization, |
| Online Access: | http://hdl.handle.net/10261/19990 |
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dig-icm-es-10261-199902020-11-19T08:40:52Z Press perturbations and indirect effects in real food webs Montoya, José M. Woodward, Guy Emmerson, Mark C. Solé, Ricard V. Connectance Food webs Indirect effects Inverse Jacobian matrix Linkage density Press perturbation Specialization 8 pages, 2 figures,3 tables The prediction of the effects of disturbances in natural systems is limited by the general lack of knowledge on the strength of species interactions, i.e., the effect of one species on the population growth rate of another, and by the uncertainty of the effects that may be manifested via indirect pathways within the food web. Here we explored the consequences of changes in species populations for the remaining species within nine exceptionally well-characterized empirical food webs, for which, unlike the vast majority of other published webs, feeding links have been fully quantified. Using the inverse of the Jacobian matrix, we found that perturbations to species with few connections have larger net effects (considering both direct and indirect pathways between two species) on the rest of the food web than do disturbances to species that are highly connected. For 40% of predator–prey links, predators had positive net effects on prey populations, due to the predominance of indirect interactions. Our results highlight the fundamental, but often counterintuitive, role of indirect effects for the maintenance of food web complexity and biodiversity. This work has been supported by ESF InterAct Network, NERC Fellowship NE/C002105/1, and a Ramon y Cajal Fellowship (to J. M. Montoya). Peer reviewed 2010-01-13T10:29:09Z 2010-01-13T10:29:09Z 2009-09 artículo http://purl.org/coar/resource_type/c_6501 Ecology - Ecological Society of America 90(9) : 2426-2433(2009) 0012-9658 http://hdl.handle.net/10261/19990 10.1890/08-0657.1 en https://doi.org/10.1890/08-0657.1 open 5875 bytes application/pdf Ecological Society of America |
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España |
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ES |
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Bibliográfico |
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dig-icm-es |
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biblioteca |
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Europa del Sur |
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Biblioteca del ICM España |
| language |
English |
| topic |
Connectance Food webs Indirect effects Inverse Jacobian matrix Linkage density Press perturbation Specialization Connectance Food webs Indirect effects Inverse Jacobian matrix Linkage density Press perturbation Specialization |
| spellingShingle |
Connectance Food webs Indirect effects Inverse Jacobian matrix Linkage density Press perturbation Specialization Connectance Food webs Indirect effects Inverse Jacobian matrix Linkage density Press perturbation Specialization Montoya, José M. Woodward, Guy Emmerson, Mark C. Solé, Ricard V. Press perturbations and indirect effects in real food webs |
| description |
8 pages, 2 figures,3 tables |
| format |
artículo |
| topic_facet |
Connectance Food webs Indirect effects Inverse Jacobian matrix Linkage density Press perturbation Specialization |
| author |
Montoya, José M. Woodward, Guy Emmerson, Mark C. Solé, Ricard V. |
| author_facet |
Montoya, José M. Woodward, Guy Emmerson, Mark C. Solé, Ricard V. |
| author_sort |
Montoya, José M. |
| title |
Press perturbations and indirect effects in real food webs |
| title_short |
Press perturbations and indirect effects in real food webs |
| title_full |
Press perturbations and indirect effects in real food webs |
| title_fullStr |
Press perturbations and indirect effects in real food webs |
| title_full_unstemmed |
Press perturbations and indirect effects in real food webs |
| title_sort |
press perturbations and indirect effects in real food webs |
| publisher |
Ecological Society of America |
| publishDate |
2009-09 |
| url |
http://hdl.handle.net/10261/19990 |
| work_keys_str_mv |
AT montoyajosem pressperturbationsandindirecteffectsinrealfoodwebs AT woodwardguy pressperturbationsandindirecteffectsinrealfoodwebs AT emmersonmarkc pressperturbationsandindirecteffectsinrealfoodwebs AT solericardv pressperturbationsandindirecteffectsinrealfoodwebs |
| _version_ |
1777665710811512832 |