Biodiversity maintenance in food webs with regulatory environmental feedbacks

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dc.contributor.authorRauscher, Danielen_US
dc.contributor.authorBrown, Christopher G.en_US
dc.contributor.authorDunham, Amy E.en_US
dc.contributor.authorBagdassarian, Carey K.en_US
dc.date.accessioned2008-09-16T21:49:53Zen_US
dc.date.available2008-09-16T21:49:53Zen_US
dc.date.issued2007en_US
dc.descriptionjournal articleen_US
dc.description.abstractAlthough the food web is one of the most fundamental and oldest concepts in ecology, elucidating the strategies and structures by which natural communities of species persist remains a challenge to empirical and theoretical ecologists. We show that simple regulatory feedbacks between autotrophs and their environment when embedded within complex and realistic food-web models enhance biodiversity. The food webs are generated through the niche-model algorithm and coupled with predator–prey dynamics, with and without environmental feedbacks at the autotroph level. With high probability and especially at lower, more realistic connectance levels, regulatory environmental feedbacks result in fewer species extinctions, that is, in increased species persistence. These same feedback couplings, however, also sensitize food webs to environmental stresses leading to abrupt collapses in biodiversity with increased forcing. Feedback interactions between species and their material environments anchor food-web persistence, adding another dimension to biodiversity conservation. We suggest that the regulatory features of two natural systems, deep-sea tubeworms with their microbial consortia and a soil ecosystem manifesting adaptive homeostatic changes, can be embedded within niche-model food-web dynamics. r 2007 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipThe Jeffress Memorial Trust, The College of William and Mary, Harvard University, and the Howard Hughes Medical Instituteen_US
dc.identifier.citationRauscher, Daniel, Brown, Christopher G., Dunham, Amy E., et al.. "Biodiversity maintenance in food webs with regulatory environmental feedbacks." (2007) Elsevier: <a href="https://hdl.handle.net/1911/21691">https://hdl.handle.net/1911/21691</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/21691en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.subjectspecies persistenceen_US
dc.subjectniche modelen_US
dc.subjectpredator–prey dynamicsen_US
dc.subjectfood weben_US
dc.subjectenvironmental feedbacksen_US
dc.titleBiodiversity maintenance in food webs with regulatory environmental feedbacksen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
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