Upwelling mitigates coral bleaching in the Colombian Caribbean

Bayraktarov, Elisa, Pizarro, Valeria, Eidens, Corvin, Wilke, Thomas and Wild, Christian (2012). Upwelling mitigates coral bleaching in the Colombian Caribbean. In: Proceedings of the 12th International Coral Reef Symposium. 12th International Coral Reef Symposium, Cairns, QLD, Australia, (). 9-13 July 2012.

Author Bayraktarov, Elisa
Pizarro, Valeria
Eidens, Corvin
Wilke, Thomas
Wild, Christian
Title of paper Upwelling mitigates coral bleaching in the Colombian Caribbean
Conference name 12th International Coral Reef Symposium
Conference location Cairns, QLD, Australia
Conference dates 9-13 July 2012
Proceedings title Proceedings of the 12th International Coral Reef Symposium
Place of Publication Townsville, QLD, Australia
Publisher James Cook University
Publication Year 2012
Sub-type Fully published paper
Open Access Status
ISBN 9780980857252
Total pages 5
Language eng
Abstract/Summary The first moderate coral bleaching event for decades in Tayrona National Natural Park (Colombian Caribbean) was observed between November and December 2010. The patchy local coral communities were also influenced by seasonal upwelling that decreased water temperatures from 28 °C to 21 °C from December 2010 until February 2011. This upwelling may mitigate coral bleaching. Patterns of coral bleaching were compared before and after upwelling at an upwelling-exposed and -sheltered site in Gayraca Bay. Findings revealed that bleaching was more pronounced at the sheltered sites with 34 % of all scleractinian corals being affected compared to only 8 % at the exposed site in December 2010. By April 2011, almost all previously bleached corals (97 %) at the upwelling-exposed site had recovered from bleaching. In contrast, only 77 % of bleached corals had recovered at the upwelling-sheltered site and 12 % had died. These results support the hypothesis that seasonal upwelling mitigates coral bleaching and facilitates recovery, however the causal environmental factors have not being identified so far. Continuous temperature monitoring in high temporal resolution did not reveal any significant differences between sites. Future research should therefore focus on the water current regime in order to assess potential key influences on coral reef functioning in Tayrona National Natural Park.
Keyword Coral bleaching
Upwelling
Colombian Caribbean
Coral resilience
Coral adaptation
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes http://www.icrs2012.com/proceedings/manuscripts/ICRS2012_9A_2.pdf 9A Coral bleaching and climate change

Document type: Conference Paper
Collection: Global Change Institute Publications
 
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Created: Mon, 15 Sep 2014, 16:05:05 EST by Elisa Bayraktarov on behalf of Global Change Institute