Geographically conserved rates of background mortality among common reef-building corals in Lhaviyani Atoll, Maldives, versus northern Great Barrier Reef, Australia

Hdl Handle:
http://hdl.handle.net/10545/583329
Title:
Geographically conserved rates of background mortality among common reef-building corals in Lhaviyani Atoll, Maldives, versus northern Great Barrier Reef, Australia
Authors:
Pisapia, Chiara; Sweet, Michael J. ( 0000-0003-4983-8333 ) ; Sweatman, Hugh; Pratchett, Morgan ( 0000-0002-1862-8459 )
Abstract:
Even in the absence of major disturbances (e.g., cyclones and bleaching), corals are consistently subject to high levels of background mortality, which under-mines individual fitness and resilience of coral colonies. Most studies of coral mortality however only focus on catastrophic mortality associated with major acute disturbance events, neglecting to consider background levels of chronic mortality that have a significant influence on population structure and turnover. If, for example, there are geo-graphic differences in the prevalence of injuries and rates of background mortality, coral communities may vary in their susceptibility to acute large-scale disturbances and environmental change. This study quantified the prevalence and severity of partial mortality for four dominant and widespread coral taxa (massive Porites, encrusting Montipora, Acropora hyacinthus,and branching Pocillopora) at Lhaviyani Atoll, Maldives, and on the northern Great Barrier Reef, Australia. The prevalence and severity of sublethal injuries varied greatly among taxa, but was generally similar between locations; on the Great Barrier Reef, 99.4 % Porites colonies, 66 % of A. hyacinthus, and 64 % of Pocillopora had conspicuous injuries, compared to 92.4 % of Porites, 47.5 % of A. hyacinthus, and 44 % of Pocillopora colonies in Lhaviyani Atoll. These results suggest that background rates of mortality and injury, and associated resilience of coral populations and communities to large-scale disturbances, are conserved at large geo-graphic scales, though adjacent colonies can have markedly different injury regimes, likely to lead to strong intraspecific variation in colony fitness and resilience.
Affiliation:
University of Derby
Citation:
Pisapia, C, Sweet, M, Sweatman, H, & Pratchett, M 2015, 'Geographically conserved rates of background mortality among common reef-building corals in Lhaviyani Atoll, Maldives, versus northern Great Barrier Reef, Australia', Marine Biology, 8, p. 1579
Publisher:
Springer Berlin Heidelberg
Journal:
Marine Biology
Issue Date:
14-Jul-2015
URI:
http://hdl.handle.net/10545/583329
DOI:
10.1007/s00227-015-2694-9
Additional Links:
http://link.springer.com/10.1007/s00227-015-2694-9
Type:
Article
Language:
en
Series/Report no.:
Vol. 162; Issue. 8
ISSN:
0025-3162; 1432-1793
Appears in Collections:
Biological Sciences Research Group

Full metadata record

DC FieldValue Language
dc.contributor.authorPisapia, Chiaraen
dc.contributor.authorSweet, Michael J.en
dc.contributor.authorSweatman, Hughen
dc.contributor.authorPratchett, Morganen
dc.date.accessioned2015-12-07T18:48:43Zen
dc.date.available2015-12-07T18:48:43Zen
dc.date.issued2015-07-14en
dc.identifier.citationPisapia, C, Sweet, M, Sweatman, H, & Pratchett, M 2015, 'Geographically conserved rates of background mortality among common reef-building corals in Lhaviyani Atoll, Maldives, versus northern Great Barrier Reef, Australia', Marine Biology, 8, p. 1579en
dc.identifier.issn0025-3162en
dc.identifier.issn1432-1793en
dc.identifier.doi10.1007/s00227-015-2694-9en
dc.identifier.urihttp://hdl.handle.net/10545/583329en
dc.description.abstractEven in the absence of major disturbances (e.g., cyclones and bleaching), corals are consistently subject to high levels of background mortality, which under-mines individual fitness and resilience of coral colonies. Most studies of coral mortality however only focus on catastrophic mortality associated with major acute disturbance events, neglecting to consider background levels of chronic mortality that have a significant influence on population structure and turnover. If, for example, there are geo-graphic differences in the prevalence of injuries and rates of background mortality, coral communities may vary in their susceptibility to acute large-scale disturbances and environmental change. This study quantified the prevalence and severity of partial mortality for four dominant and widespread coral taxa (massive Porites, encrusting Montipora, Acropora hyacinthus,and branching Pocillopora) at Lhaviyani Atoll, Maldives, and on the northern Great Barrier Reef, Australia. The prevalence and severity of sublethal injuries varied greatly among taxa, but was generally similar between locations; on the Great Barrier Reef, 99.4 % Porites colonies, 66 % of A. hyacinthus, and 64 % of Pocillopora had conspicuous injuries, compared to 92.4 % of Porites, 47.5 % of A. hyacinthus, and 44 % of Pocillopora colonies in Lhaviyani Atoll. These results suggest that background rates of mortality and injury, and associated resilience of coral populations and communities to large-scale disturbances, are conserved at large geo-graphic scales, though adjacent colonies can have markedly different injury regimes, likely to lead to strong intraspecific variation in colony fitness and resilience.en
dc.language.isoenen
dc.publisherSpringer Berlin Heidelbergen
dc.relation.ispartofseriesVol. 162en
dc.relation.ispartofseriesIssue. 8en
dc.relation.urlhttp://link.springer.com/10.1007/s00227-015-2694-9en
dc.rightsArchived with thanks to Marine Biologyen
dc.subjectCoral reefen
dc.subjectMortalityen
dc.titleGeographically conserved rates of background mortality among common reef-building corals in Lhaviyani Atoll, Maldives, versus northern Great Barrier Reef, Australiaen
dc.typeArticleen
dc.contributor.departmentUniversity of Derbyen
dc.identifier.journalMarine Biologyen
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