Interactions between disturbance and dispersal reduce persistence thresholds in a benthic community

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dc.contributor.author Lundquist, Carolyn en
dc.contributor.author Thrush, Simon en
dc.contributor.author Coco, Giovanni en
dc.contributor.author Hewitt, Judi en
dc.date.accessioned 2012-05-30T20:54:32Z en
dc.date.issued 2010 en
dc.identifier.citation Marine Ecology Progress Series 413:217-228 2010 en
dc.identifier.issn 0171-8630 en
dc.identifier.uri http://hdl.handle.net/2292/18805 en
dc.description.abstract Interactions between the scale of dispersal and the disturbance regime can lead to radical shifts in the ability of organisms to colonize patches and persist within a landscape. We varied the spatial and temporal rates of disturbance and the connectivity between patches in a model of a patch landscape to illustrate thresholds of community persistence for a marine benthic community. We used model parameters representative of a New Zealand marine biogenic-structured community for which recovery after the cessation of disturbance has been observed within ~15 yr. Model results suggest functional extinction of these biogenic communities under many disturbance regimes, and homogenization of the landscape to a community dominated by opportunistic species. Dispersal limitation increases in importance for recovery as the disturbance regime strengthens, indicating thresholds in the tolerable disturbance regime based on the dispersal potential of the dominant biogenic species. Limited sensitivity of our model results to different functional forms of the recovery trajectory and colonization neighborhood suggest that these results can be extrapolated to other biogenic structuredominated communities with recovery rates of a similar order of magnitude. Our results demonstrate that the scale of the disturbance regime and dispersal processes are fundamentally coupled, and knowing the scales of both processes is imperative when predicting change in the structure and diversity of benthic communities threatened by cumulative change. en
dc.publisher Inter Research en
dc.relation.ispartofseries Marine Ecology Progress Series en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0171-8630/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Interactions between disturbance and dispersal reduce persistence thresholds in a benthic community en
dc.type Journal Article en
dc.identifier.doi 10.3354/meps08578 en
pubs.begin-page 217 en
pubs.volume 413 en
dc.rights.holder Copyright: Inter Research en
pubs.end-page 228 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 347191 en
pubs.org-id Science en
pubs.org-id Marine Science en
pubs.org-id School of Environment en
pubs.org-id Statistics en
pubs.record-created-at-source-date 2012-05-31 en


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