Local bleaching thresholds established by remote sensing techniques vary among reefs with deviating bleaching patterns during the 2012 event in the Arabian/Persian Gulf

Shuail, Dawood, Wiedenmann, Jörg, D'Angelo, Cecilia, Baird, Andrew H., Pratchett, Morgan S., Riegl, Bernhard, Burt, John A., Petrov, Peter, and Amos, Carl (2016) Local bleaching thresholds established by remote sensing techniques vary among reefs with deviating bleaching patterns during the 2012 event in the Arabian/Persian Gulf. Marine Pollution Bulletin, 105 (2). pp. 654-659.

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Abstract

A severe bleaching event affected coral communities off the coast of Abu Dhabi, UAE in August/September, 2012. In Saadiyat and Ras Ghanada reefs similar to 40% of the corals showed signs of bleaching. In contrast, only 15% of the corals were affected on Delma reef. Bleaching threshold temperatures for these sites were established using remotely sensed sea surface temperature (SST) data recorded by MODIS-Aqua. The calculated threshold temperatures varied between locations (34.48 degrees C, 34.55 degrees C, 35.05 degrees C), resulting in site-specific deviations in the numbers of days during which these thresholds were exceeded. Hence, the less severe bleaching of Delma reef might be explained by the lower relative heat stress experienced by this coral community. However, the dominance of Porites spp. that is associated with the long-term exposure of Delma reef to elevated temperatures, as well as the more pristine setting may have additionally contributed to the higher coral bleaching threshold for this site.

Item ID: 45580
Item Type: Article (Refereed Research - C1)
Keywords: coral bleaching, threshold temperature, extreme environment, coral reefs, zooxanthellae, symbiodinium, global change
Additional Information:

Crown Copyright © 2016 Published by Elsevier Ltd. This is an open access article under the CC BY license. Open Access funded by Natural Environment Research Council. (http://creativecommons.org/licenses/by/4.0/).

ISSN: 1879-3363
Funders: Natural Environment Research Council (NERC), European Research Council (ERC), European Union (EU), Public Authority for Education and Training of the State of Kuwait (PAETSK)
Projects and Grants: NERC NE/K00641X/1, ERC/EU Seventh Framework Program FP/2007-2013, ERC Grant agreement 311179
Date Deposited: 08 Jun 2016 07:37
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960310 Global Effects of Climate Change and Variability (excl. Australia, New Zealand, Antarctica and the South Pacific) @ 40%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 60%
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