Please use this identifier to cite or link to this item: http://dspace.azti.es/handle/24689/971
Files in This Item:
There are no files associated with this item.
Full metadata record
DC FieldValueLanguage
dc.contributor.authorD'Olivo, Juan P.
dc.contributor.authorGeorgiou, Lucy
dc.contributor.authorFalter, Jim
dc.contributor.authorDeCarlo, Thomas M.
dc.contributor.authorIrigoien, Xabier
dc.contributor.authorVoolstra, Christian R.
dc.contributor.authorRoder, Cornelia and Trotter, Julie
dc.contributor.authorMcCulloch, Malcolm T.
dc.date.accessioned2020-10-07T14:25:01Z-
dc.date.available2020-10-07T14:25:01Z-
dc.date.issued2019
dc.identifierISI:000477582400022
dc.identifier.citationGEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, 2019, 20, 2936-2954
dc.identifier.issn1525-2027
dc.identifier.urihttp://dspace.azti.es/handle/24689/971-
dc.description.abstractThis study investigates the impact of extreme heat wave events on long-lived massive corals (Porites spp.) from the central Saudi Arabian Red Sea using trace element (Sr/Ca, Li/Mg, Mg/Ca, U/Ca, B/Ca, and Li/Ca) records preserved in the coral skeleton for the period between 1992 and 2012. Prior to 1998, the trace element records show strong correlations with sea surface temperature. However, during the prolonged high temperature phase associated with the 1998 El Nino event, the seasonal trace element signals were disrupted, which also coincided with a reduction in extension rates. This disruption in normally highly correlated seasonal trace element ratios-sea surface temperature relationships was unusually long, lasting for approximately 2 years in the inner-shelf reef site and nearly 4 years in the outer-shelf reef site. Although the seasonal signal of trace element ratios in both cores eventually stabilized, for the inner-shelf core the amplitude and absolute values in most trace element ratios remained significantly different compared to pre-1998 levels. This suggests that prolonged thermal stress can induce subtle but potentially long-lasting physiological changes that affect the elemental composition of the coral's calcifying fluid. The lack of indication of stress in the core records during later bleaching events (2003, 2005, and 2010) suggests that some of these physiological changes could have induced increased thermal tolerance, particularly for inner-shelf corals, lending support to the capacity for corals to acclimatize. Plain Language Summary The future of coral reefs is jeopardized by global warming, particularly by marine heat waves and mass bleaching events, as evidenced by the 2016 and 2017 events. In this study the geochemical composition of the skeleton of two long-lived massive corals from the Red Sea was used to evaluate possible long-term acclimatization or changes in sensitivity to thermal stress. We detected a clear disturbance in the biomineralization process of the two corals following the 1998 bleaching event. However, posterior thermal stress events of similar magnitude were not registered in the skeletal growth or geochemical signature of the same corals hinting toward a possible long-term acclimatization following the exposure to the 1998 event.
dc.language.isoEnglish
dc.publisherAMER GEOPHYSICAL UNION
dc.subjectthermal stress
dc.subjectPorites
dc.subjectacclimatization
dc.subjectcoral
dc.subjectRed Sea
dc.subjecttrace elements
dc.subjectGREAT-BARRIER-REEF
dc.subjectHIGH-RESOLUTION SR/CA
dc.subjectTRACE-ELEMENT
dc.subjectSURFACE TEMPERATURE
dc.subjectARAGONITE
dc.subjectRECORD
dc.subjectCALIBRATION
dc.subjectRATIOS
dc.subjectMODEL
dc.subjectPROXY
dc.titleLong-Term Impacts of the 1997-1998 Bleaching Event on the Growth and Resilience of Massive Porites Corals From the Central Red Sea
dc.typeArticle
dc.identifier.journalGEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
dc.format.page2936-2954
dc.format.volume20
dc.contributor.funderKing Abdullah University of Science and Technology (KAUST)King Abdullah University of Science \& Technology
dc.contributor.funderARC Laureate FellowshipAustralian Research Council [LF120100049]
dc.contributor.funderARC Centre of Excellence for Coral Reef StudiesAustralian Research Council [CE140100020]
dc.identifier.doi10.1029/2019GC008312
Appears in Publication types:Artículos científicos



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.