Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD
Atmospheric CO 2 partial pressure ( p CO 2 ) is expected to increase to 700 μatm or more by the end of the present century. Anthropogenic CO 2 is absorbed by the oceans, leading to decreases in pH and the CaCO 3 saturation state (Ω) of the seawater. Elevated p CO 2 was shown to drastically decrease...
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Online Access: | https://doi.org/10.5194/bg-7-289-2010 https://www.biogeosciences.net/7/289/2010/ |
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ftcopernicus:oai:publications.copernicus.org:bg1322 2023-05-15T17:51:24+02:00 Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD Rodolfo-Metalpa, R. Martin, S. Ferrier-Pagès, C. Gattuso, J.-P. 2018-09-27 info:eu-repo/semantics/application/pdf https://doi.org/10.5194/bg-7-289-2010 https://www.biogeosciences.net/7/289/2010/ eng eng info:eu-repo/grantAgreement/EC/FP7/211384 doi:10.5194/bg-7-289-2010 https://www.biogeosciences.net/7/289/2010/ info:eu-repo/semantics/openAccess eISSN: 1726-4189 info:eu-repo/semantics/Text 2018 ftcopernicus https://doi.org/10.5194/bg-7-289-2010 2019-12-24T09:57:34Z Atmospheric CO 2 partial pressure ( p CO 2 ) is expected to increase to 700 μatm or more by the end of the present century. Anthropogenic CO 2 is absorbed by the oceans, leading to decreases in pH and the CaCO 3 saturation state (Ω) of the seawater. Elevated p CO 2 was shown to drastically decrease calcification rates in tropical zooxanthellate corals. Here we show, using the Mediterranean zooxanthellate coral Cladocora caespitosa , that an increase in p CO 2 , in the range predicted for 2100, does not reduce its calcification rate. Therefore, the conventional belief that calcification rates will be affected by ocean acidification may not be widespread in temperate corals. Seasonal change in temperature is the predominant factor controlling photosynthesis, respiration, calcification and symbiont density. An increase in p CO 2 , alone or in combination with elevated temperature, had no significant effect on photosynthesis, photosynthetic efficiency and calcification. The lack of sensitivity C. caespitosa to elevated p CO 2 might be due to its slow growth rates, which seem to be more dependent on temperature than on the saturation state of calcium carbonate in the range projected for the end of the century. Other/Unknown Material Ocean acidification Copernicus Publications: E-Journals Biogeosciences 7 1 289 300 |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Atmospheric CO 2 partial pressure ( p CO 2 ) is expected to increase to 700 μatm or more by the end of the present century. Anthropogenic CO 2 is absorbed by the oceans, leading to decreases in pH and the CaCO 3 saturation state (Ω) of the seawater. Elevated p CO 2 was shown to drastically decrease calcification rates in tropical zooxanthellate corals. Here we show, using the Mediterranean zooxanthellate coral Cladocora caespitosa , that an increase in p CO 2 , in the range predicted for 2100, does not reduce its calcification rate. Therefore, the conventional belief that calcification rates will be affected by ocean acidification may not be widespread in temperate corals. Seasonal change in temperature is the predominant factor controlling photosynthesis, respiration, calcification and symbiont density. An increase in p CO 2 , alone or in combination with elevated temperature, had no significant effect on photosynthesis, photosynthetic efficiency and calcification. The lack of sensitivity C. caespitosa to elevated p CO 2 might be due to its slow growth rates, which seem to be more dependent on temperature than on the saturation state of calcium carbonate in the range projected for the end of the century. |
format |
Other/Unknown Material |
author |
Rodolfo-Metalpa, R. Martin, S. Ferrier-Pagès, C. Gattuso, J.-P. |
spellingShingle |
Rodolfo-Metalpa, R. Martin, S. Ferrier-Pagès, C. Gattuso, J.-P. Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD |
author_facet |
Rodolfo-Metalpa, R. Martin, S. Ferrier-Pagès, C. Gattuso, J.-P. |
author_sort |
Rodolfo-Metalpa, R. |
title |
Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD |
title_short |
Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD |
title_full |
Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD |
title_fullStr |
Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD |
title_full_unstemmed |
Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD |
title_sort |
response of the temperate coral cladocora caespitosa to mid- and long-term exposure to pco2 and temperature levels projected for the year 2100 ad |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-7-289-2010 https://www.biogeosciences.net/7/289/2010/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
eISSN: 1726-4189 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/211384 doi:10.5194/bg-7-289-2010 https://www.biogeosciences.net/7/289/2010/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-7-289-2010 |
container_title |
Biogeosciences |
container_volume |
7 |
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1 |
container_start_page |
289 |
op_container_end_page |
300 |
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1766158526429790208 |