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Article: Trophic compensation reinforces resistance: Herbivory absorbs the increasing effects of multiple disturbances

TitleTrophic compensation reinforces resistance: Herbivory absorbs the increasing effects of multiple disturbances
Authors
KeywordsInertia
Top-down
Stressors
Climate change
Compensatory
Issue Date2015
Citation
Ecology Letters, 2015, v. 18, n. 2, p. 182-187 How to Cite?
Abstract© 2015 John Wiley & Sons Ltd/CNRS. Disturbance often results in small changes in community structure, but the probability of transitioning to contrasting states increases when multiple disturbances combine. Nevertheless, we have limited insights into the mechanisms that stabilise communities, particularly how perturbations can be absorbed without restructuring (i.e. resistance). Here, we expand the concept of compensatory dynamics to include countervailing mechanisms that absorb disturbances through trophic interactions. By definition, 'compensation' occurs if a specific disturbance stimulates a proportional countervailing response that eliminates its otherwise unchecked effect. We show that the compounding effects of disturbances from local to global scales (i.e. local canopy-loss, eutrophication, ocean acidification) increasingly promote the expansion of weedy species, but that this response is countered by a proportional increase in grazing. Finally, we explore the relatively unrecognised role of compensatory effects, which are likely to maintain the resistance of communities to disturbance more deeply than current thinking allows.
Persistent Identifierhttp://hdl.handle.net/10722/212649
ISSN
2015 Impact Factor: 10.772
2015 SCImago Journal Rankings: 8.630

 

DC FieldValueLanguage
dc.contributor.authorGhedini, Giulia-
dc.contributor.authorRussell, Bayden D.-
dc.contributor.authorConnell, Sean D.-
dc.date.accessioned2015-07-28T04:04:34Z-
dc.date.available2015-07-28T04:04:34Z-
dc.date.issued2015-
dc.identifier.citationEcology Letters, 2015, v. 18, n. 2, p. 182-187-
dc.identifier.issn1461-023X-
dc.identifier.urihttp://hdl.handle.net/10722/212649-
dc.description.abstract© 2015 John Wiley & Sons Ltd/CNRS. Disturbance often results in small changes in community structure, but the probability of transitioning to contrasting states increases when multiple disturbances combine. Nevertheless, we have limited insights into the mechanisms that stabilise communities, particularly how perturbations can be absorbed without restructuring (i.e. resistance). Here, we expand the concept of compensatory dynamics to include countervailing mechanisms that absorb disturbances through trophic interactions. By definition, 'compensation' occurs if a specific disturbance stimulates a proportional countervailing response that eliminates its otherwise unchecked effect. We show that the compounding effects of disturbances from local to global scales (i.e. local canopy-loss, eutrophication, ocean acidification) increasingly promote the expansion of weedy species, but that this response is countered by a proportional increase in grazing. Finally, we explore the relatively unrecognised role of compensatory effects, which are likely to maintain the resistance of communities to disturbance more deeply than current thinking allows.-
dc.languageeng-
dc.relation.ispartofEcology Letters-
dc.subjectInertia-
dc.subjectTop-down-
dc.subjectStressors-
dc.subjectClimate change-
dc.subjectCompensatory-
dc.titleTrophic compensation reinforces resistance: Herbivory absorbs the increasing effects of multiple disturbances-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1111/ele.12405-
dc.identifier.scopuseid_2-s2.0-84934094942-
dc.identifier.hkuros267011-
dc.identifier.volume18-
dc.identifier.issue2-
dc.identifier.spage182-
dc.identifier.epage187-
dc.identifier.eissn1461-0248-

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