Wild, Christian, Rixen, Tim, Sanchez-Noguera, Celeste, Stuhldreier, Ines, Jimenez, Carlos and Merico, Agostino ORCID: https://orcid.org/0000-0001-8095-8056 (2014) Massive coral tissue ablations in reefs of Pacific Costa Rica. Galaxea, Journal of Coral Reef Studies, 16 (1). pp. 13-14. DOI https://doi.org/10.3755/galaxea.16.13.

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Galaxea, Journal of Coral Reef Studies 16: 13-14(2014)In January 2012, we observed massive tissue ablations of many scleractinian coral colonies of the genus Pocillopora (P. elegansand P. damicornis) in between 3 and 7 m water depth at location Matapalo Reef (10.538391 N, 85.765930 W) at the Northern Pacific coast of Costa Rica (Fig. 1). This was the most drastic direct coral dying event the first author of this study has ever observed in more than 1,500 dives in coral reefs around the world during the last decade. More than 50% of all observed Pocillopora coral colonies (n=48) were affected, and no coral bleaching as intermediate response was visible. There were few other hard coral colonies of the genera Porites, Diploriam, and Pavona present, but none of these massive corals exhibited the tissue ablations that were observed for Pocillopora. Reason for this event was not evident, because none of simultaneous measurements of water quality (pH=8.2, water temperature=27°C, salinity=33, O2 concentrations close to saturation) showed atypical values.Despite the detachment of tissue fragments from coral skeleton has been noted in the field and in the laboratory in response to environmental stress (Sammarco 1982; Richmond 1985), and although soft tissue detachment from the skeleton of colonial scleractinian corals has been observed both in vivo and in vitro (Domart-Coulon et al. 2005), such massive coral tissue detachment and ablation at the scale observed here has never been reported for Eastern Tropical Pacific reefs in the literature before. However, this phenomenon may potentially be related to infection by pathogenic bacteria of the genus Vibrio as described by Ben-Haim et al. (2003) and Luna et al. (2007).

Document Type: Article
Programme Area: UNSPECIFIED
Research affiliation: Ecology
Biogeochemistry and Geology > Carbon and Nutrient Cycling
Integrated Modelling > Systems Ecology
Refereed: Yes
Open Access Journal?: Yes
DOI: https://doi.org/10.3755/galaxea.16.13
ISSN: 1883-0838
Date Deposited: 14 Aug 2019 13:07
Last Modified: 26 Mar 2024 13:29
URI: http://cris.leibniz-zmt.de/id/eprint/2592

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