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Acidification response of Mediterranean sea temperate and cold-water corals from mid- to long-term experiments

AuthorsMovilla, Juan Ignacio CSIC ORCID; Pelejero, Carles CSIC ORCID ; Coma, Rafael CSIC ORCID ; Gori, Andrea CSIC ORCID; Calvo, Eva María CSIC ORCID ; López-Sanz, Àngel CSIC ORCID; Serrano, Eduard CSIC ORCID; Fernández-Guallart, Elisa; Grinyó, Jordi CSIC ORCID; Dominguez-Carrió, Carlos CSIC ORCID; Ribes, Marta CSIC ORCID
Issue Date24-Sep-2012
CitationThird International Symposium on the Ocean In A High CO2 World. Program and abstracts: 191-192 (2012)
AbstractThe Mediterranean Sea has certain characteristics that make it especially sensitive and vulnerable to changes in atmospheric CO2. Recent studies are starting to confirm that the associated acidification, particularly in the Western Mediterranean, is taking place more rapidly than in the global oceans. Owing to these characteristics, we have run three mid- to long-term manipulative experiments to evaluate potential effects of acidification on corals from this basin. A first experiment (six months long) was run on the temperate corals Cladocora caespitosa and Oculina patagonica, and confirmed the a priori expected decrease in skeletal growth with decreasing pH for both species. Interestingly, a trend in calcification decrease was observed in colonies from the same species. Faster growing colonies were more affected by acidification that those that grew slower, which could be related to the energy requirements associated to the growing process. In a second experiment (ten months long), we tested the possible effects of acidification in the cold-water coral species Lophelia pertusa, Dendrophyllia cornigera, Desmophyllum dianthus and Madrepora oculata. Subtle differences in calcification were observed between the treatments, with the first three of these species growing slightly slower at low pH, although these changes were not statistically significant. In a third, still ongoing, experiment (expected to be ~twelve months long), we are combining pH and temperature manipulations in the temperate corals Astroides calycularis and Leptopsammia pruvoti. In this experiment, we are observing a synergistic decrease in coral calcification when pH is lowered and temperature is increased at the same time
DescriptionMovilla, Juan Ignacio ... et. al.-- Third International Symposium on the Ocean In A High CO2 World, 24-27 September 2012, Monterey, California
Appears in Collections:(CEAB) Comunicaciones congresos
(ICM) Comunicaciones congresos

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