Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development
Numerous experiments have shown that ocean acidification impedes coral calcification, but knowledge about in situ reef ecosystem response to ocean acidification is still scarce. Bahía Culebra, situated at the northern Pacific coast of Costa Rica, is a location naturally exposed to acidic conditions...
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ftleibnizopen:oai:oai.leibnizopen.de:jof0pIkBdbrxVwz6lCX6 2023-08-20T04:08:55+02:00 Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development Sánchez-Noguera, Celeste Lange, Ines Cortés-Núñez, Jorge Jimenez, Carlos Morales, Álvaro Wild, Christian Rixen, Tim 2018 https://repository.publisso.de/resource/frl:6409094 https://doi.org/10.5194/bg-15-2349-2018 eng eng https://creativecommons.org/licenses/by/4.0/ Biogeosciences, 15(8):2349-2360 2018 ftleibnizopen https://doi.org/10.5194/bg-15-2349-2018 2023-07-30T23:26:28Z Numerous experiments have shown that ocean acidification impedes coral calcification, but knowledge about in situ reef ecosystem response to ocean acidification is still scarce. Bahía Culebra, situated at the northern Pacific coast of Costa Rica, is a location naturally exposed to acidic conditions due to the Papagayo seasonal upwelling. We measured pH and pCO2 in situ during two non-upwelling seasons (June 2012, May–June 2013), with a high temporal resolution of every 15 and 30 min, respectively, using two Submersible Autonomous Moored Instruments (SAMI-pH, SAMI-CO2). These results were compared with published data from the 2009 upwelling season. Findings revealed that the carbonate system in Bahía Culebra shows a high temporal variability. Incoming offshore waters drive intra- and interseasonal changes. Lowest pH (7.8) and highest pCO2 (658.3 µatm) values measured during a cold-water intrusion event in the non-upwelling season were similar to those minimum values reported from upwelling season (pH = 7.8, pCO2 = 643.5 µatm), unveiling that natural acidification also occurs sporadically in the non-upwelling season. This affects the interaction of photosynthesis, respiration, calcification and carbonate dissolution and the resulting diel cycle of pH and pCO2 in the reefs of Bahía Culebra. During the non-upwelling season, the aragonite saturation state (Ωa) rises to values of > 3.3 and during the upwelling season falls below 2.5. The Ωa threshold values for coral growth were derived from the correlation between measured Ωa and coral linear extension rates which were obtained from the literature and suggest that future ocean acidification will threaten the continued growth of reefs in Bahía Culebra. These data contribute to building a better understanding of the carbonate system dynamics and coral reefs' key response (e.g., coral growth) to natural low-pH conditions, in upwelling areas in the eastern tropical Pacific and beyond. Other/Unknown Material Ocean acidification sami LeibnizOpen (The Leibniz Association) Pacific Biogeosciences 15 8 2349 2360 |
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Open Polar |
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LeibnizOpen (The Leibniz Association) |
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ftleibnizopen |
language |
English |
description |
Numerous experiments have shown that ocean acidification impedes coral calcification, but knowledge about in situ reef ecosystem response to ocean acidification is still scarce. Bahía Culebra, situated at the northern Pacific coast of Costa Rica, is a location naturally exposed to acidic conditions due to the Papagayo seasonal upwelling. We measured pH and pCO2 in situ during two non-upwelling seasons (June 2012, May–June 2013), with a high temporal resolution of every 15 and 30 min, respectively, using two Submersible Autonomous Moored Instruments (SAMI-pH, SAMI-CO2). These results were compared with published data from the 2009 upwelling season. Findings revealed that the carbonate system in Bahía Culebra shows a high temporal variability. Incoming offshore waters drive intra- and interseasonal changes. Lowest pH (7.8) and highest pCO2 (658.3 µatm) values measured during a cold-water intrusion event in the non-upwelling season were similar to those minimum values reported from upwelling season (pH = 7.8, pCO2 = 643.5 µatm), unveiling that natural acidification also occurs sporadically in the non-upwelling season. This affects the interaction of photosynthesis, respiration, calcification and carbonate dissolution and the resulting diel cycle of pH and pCO2 in the reefs of Bahía Culebra. During the non-upwelling season, the aragonite saturation state (Ωa) rises to values of > 3.3 and during the upwelling season falls below 2.5. The Ωa threshold values for coral growth were derived from the correlation between measured Ωa and coral linear extension rates which were obtained from the literature and suggest that future ocean acidification will threaten the continued growth of reefs in Bahía Culebra. These data contribute to building a better understanding of the carbonate system dynamics and coral reefs' key response (e.g., coral growth) to natural low-pH conditions, in upwelling areas in the eastern tropical Pacific and beyond. |
author |
Sánchez-Noguera, Celeste Lange, Ines Cortés-Núñez, Jorge Jimenez, Carlos Morales, Álvaro Wild, Christian Rixen, Tim |
spellingShingle |
Sánchez-Noguera, Celeste Lange, Ines Cortés-Núñez, Jorge Jimenez, Carlos Morales, Álvaro Wild, Christian Rixen, Tim Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development |
author_facet |
Sánchez-Noguera, Celeste Lange, Ines Cortés-Núñez, Jorge Jimenez, Carlos Morales, Álvaro Wild, Christian Rixen, Tim |
author_sort |
Sánchez-Noguera, Celeste |
title |
Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development |
title_short |
Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development |
title_full |
Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development |
title_fullStr |
Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development |
title_full_unstemmed |
Natural ocean acidification at Papagayo upwelling system (north Pacific Costa Rica): implications for reef development |
title_sort |
natural ocean acidification at papagayo upwelling system (north pacific costa rica): implications for reef development |
publishDate |
2018 |
url |
https://repository.publisso.de/resource/frl:6409094 https://doi.org/10.5194/bg-15-2349-2018 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ocean acidification sami |
genre_facet |
Ocean acidification sami |
op_source |
Biogeosciences, 15(8):2349-2360 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/bg-15-2349-2018 |
container_title |
Biogeosciences |
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15 |
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8 |
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2349 |
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2360 |
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1774721506519023616 |