Show simple item record

dc.contributor.authorRauscher, Daniel
Brown, Christopher G
Dunham, Amy E
Bagdassarian, Carey K
dc.date.accessioned 2008-09-16T21:49:53Z
dc.date.available 2008-09-16T21:49:53Z
dc.date.issued 2007
dc.identifier.urihttps://hdl.handle.net/1911/21691
dc.description journal article
dc.description.abstract Although 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.
dc.description.sponsorship The Jeffress Memorial Trust, The College of William and Mary, Harvard University, and the Howard Hughes Medical Institute
dc.language.iso eng
dc.publisher Elsevier
dc.subjectspecies persistence
niche model
predator–prey dynamics
food web
environmental feedbacks
dc.title Biodiversity maintenance in food webs with regulatory environmental feedbacks
dc.type Journal article
dc.type.dcmi Text
dc.identifier.citation Rauscher, Daniel, Brown, Christopher G, Dunham, Amy E, et al.. "Biodiversity maintenance in food webs with regulatory environmental feedbacks." (2007) Elsevier: https://hdl.handle.net/1911/21691.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record