Synchronous biological feedbacks in parrotfishes associated with pantropical coral bleaching.

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dc.contributor.author Taylor, Brett M en
dc.contributor.author Benkwitt, Cassandra E en
dc.contributor.author Choat, Howard en
dc.contributor.author Clements, Kendall en
dc.contributor.author Graham, Nicholas AJ en
dc.contributor.author Meekan, Mark G en
dc.date.accessioned 2020-02-17T01:25:59Z en
dc.date.issued 2020-03 en
dc.identifier.issn 1354-1013 en
dc.identifier.uri http://hdl.handle.net/2292/50069 en
dc.description.abstract Biological feedbacks generated through patterns of disturbance are vital for sustaining ecosystem states. Recent ocean warming and thermal anomalies have caused pantropical episodes of coral bleaching, which has led to widespread coral mortality and a range of subsequent effects on coral reef communities. Although the response of many reef-associated fishes to major disturbance events on coral reefs is negative (e.g., reduced abundance and condition), parrotfishes show strong feedbacks after disturbance to living reef structure manifesting as increases in abundance. However, the mechanisms underlying this response are poorly understood. Using biochronological reconstructions of annual otolith (ear stone) growth from two ocean basins, we tested whether parrotfish growth was enhanced following bleaching-related coral mortality, thus providing an organismal mechanism for demographic changes in populations. Both major feeding guilds of parrotfishes (scrapers and excavators) exhibited enhanced growth of individuals after bleaching that was decoupled from expected thermal performance, a pattern that was not evident in other reef fish taxa from the same environment. These results provide evidence for a more nuanced ecological feedback system-one where disturbance plays a key role in mediating parrotfish-benthos interactions. By influencing the biology of assemblages, disturbance can thereby stimulate change in parrotfish grazing intensity and ultimately reef geomorphology over time. This feedback cycle operated historically at within-reef scales; however, our results demonstrate that the scale, magnitude, and severity of recent thermal events are entraining the biological responses of disparate communities to respond in synchrony. This may fundamentally alter feedbacks in the relationships between parrotfishes and reef systems. en
dc.format.medium Print-Electronic en
dc.language eng en
dc.relation.ispartofseries Global change biology 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. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject Animals en
dc.subject Fishes en
dc.subject Perciformes en
dc.subject Anthozoa en
dc.subject Ecosystem en
dc.subject Coral Reefs en
dc.title Synchronous biological feedbacks in parrotfishes associated with pantropical coral bleaching. en
dc.type Journal Article en
dc.identifier.doi 10.1111/gcb.14909 en
pubs.issue 3 en
pubs.begin-page 1285 en
pubs.volume 26 en
dc.rights.holder Copyright: The author en
pubs.end-page 1294 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Research Support, Non-U.S. Gov't en
pubs.subtype Journal Article en
pubs.elements-id 788975 en
pubs.org-id Science en
pubs.org-id Biological Sciences en
dc.identifier.eissn 1365-2486 en
pubs.record-created-at-source-date 2019-12-03 en
pubs.dimensions-id 31789454 en


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