Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world
Ocean acidification describes the progressive, global reduction in seawater pH that is currently underway because of the accelerating oceanic uptake of atmospheric CO₂. Acidification is expected to reduce coral reef calcification and increase reef dissolution. Inorganic cementation in reefs describe...
Published in: | Proceedings of the National Academy of Sciences |
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National Academies Press
2008
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-509 https://doi.org/10.1073/pnas.0712167105 |
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ftncar:oai:drupal-site.org:articles_6288 2023-10-01T03:58:32+02:00 Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world Manzello, Derek (author) Kleypas, Joan (author) Budd, David (author) Eakin, C. (author) Glynn, Peter (author) Langdon, Chris (author) 2008-07-29 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-509 https://doi.org/10.1073/pnas.0712167105 en eng National Academies Press Proceedings of the National Academy of Sciences of the United States of America http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-509 doi:10.1073/pnas.0712167105 ark:/85065/d7xk8fq6 An edited version of this article was published by the National Academy of Sciences. Copyright 2008 National Academy of Sciences. Coral reef persistence Inorganic cementation Ocean acidification Climate change Text article 2008 ftncar https://doi.org/10.1073/pnas.0712167105 2023-09-04T18:28:02Z Ocean acidification describes the progressive, global reduction in seawater pH that is currently underway because of the accelerating oceanic uptake of atmospheric CO₂. Acidification is expected to reduce coral reef calcification and increase reef dissolution. Inorganic cementation in reefs describes the precipitation of CaCO₃ that acts to bind framework components and occlude porosity. Little is known about the effects of ocean acidification on reef cementation and whether changes in cementation rates will affect reef resistance to erosion. Coral reefs of the eastern tropical Pacific (ETP) are poorly developed and subject to rapid bioerosion. Upwelling processes mix cool, subthermocline waters with elevated pCO₂ (the partial pressure of CO₂) and nutrients into the surface layers throughout the ETP. Concerns about ocean acidification have led to the suggestion that this region of naturally low pH waters may serve as a model of coral reef development in a high-CO₂ world. We analyzed seawater chemistry and reef framework samples from multiple reef sites in the ETP and found that a low carbonate saturation state (Ω) and trace abundances of cement are characteristic of these reefs. These low cement abundances may be a factor in the high bioerosion rates previously reported for ETP reefs, although elevated nutrients in upwelled waters may also be limiting cementation and/or stimulating bioerosion. ETP reefs represent a real-world example of coral reef growth in low-Ω waters that provide insights into how the biological-geological interface of coral reef ecosystems will change in a high-CO₂ world. Article in Journal/Newspaper Ocean acidification OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Pacific Proceedings of the National Academy of Sciences 105 30 10450 10455 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Coral reef persistence Inorganic cementation Ocean acidification Climate change |
spellingShingle |
Coral reef persistence Inorganic cementation Ocean acidification Climate change Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world |
topic_facet |
Coral reef persistence Inorganic cementation Ocean acidification Climate change |
description |
Ocean acidification describes the progressive, global reduction in seawater pH that is currently underway because of the accelerating oceanic uptake of atmospheric CO₂. Acidification is expected to reduce coral reef calcification and increase reef dissolution. Inorganic cementation in reefs describes the precipitation of CaCO₃ that acts to bind framework components and occlude porosity. Little is known about the effects of ocean acidification on reef cementation and whether changes in cementation rates will affect reef resistance to erosion. Coral reefs of the eastern tropical Pacific (ETP) are poorly developed and subject to rapid bioerosion. Upwelling processes mix cool, subthermocline waters with elevated pCO₂ (the partial pressure of CO₂) and nutrients into the surface layers throughout the ETP. Concerns about ocean acidification have led to the suggestion that this region of naturally low pH waters may serve as a model of coral reef development in a high-CO₂ world. We analyzed seawater chemistry and reef framework samples from multiple reef sites in the ETP and found that a low carbonate saturation state (Ω) and trace abundances of cement are characteristic of these reefs. These low cement abundances may be a factor in the high bioerosion rates previously reported for ETP reefs, although elevated nutrients in upwelled waters may also be limiting cementation and/or stimulating bioerosion. ETP reefs represent a real-world example of coral reef growth in low-Ω waters that provide insights into how the biological-geological interface of coral reef ecosystems will change in a high-CO₂ world. |
author2 |
Manzello, Derek (author) Kleypas, Joan (author) Budd, David (author) Eakin, C. (author) Glynn, Peter (author) Langdon, Chris (author) |
format |
Article in Journal/Newspaper |
title |
Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world |
title_short |
Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world |
title_full |
Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world |
title_fullStr |
Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world |
title_full_unstemmed |
Poorly cemented coral reefs of the eastern tropical Pacific: Possible insights into reef development in a high-CO₂ world |
title_sort |
poorly cemented coral reefs of the eastern tropical pacific: possible insights into reef development in a high-co₂ world |
publisher |
National Academies Press |
publishDate |
2008 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-509 https://doi.org/10.1073/pnas.0712167105 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Proceedings of the National Academy of Sciences of the United States of America http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-002-509 doi:10.1073/pnas.0712167105 ark:/85065/d7xk8fq6 |
op_rights |
An edited version of this article was published by the National Academy of Sciences. Copyright 2008 National Academy of Sciences. |
op_doi |
https://doi.org/10.1073/pnas.0712167105 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
105 |
container_issue |
30 |
container_start_page |
10450 |
op_container_end_page |
10455 |
_version_ |
1778531337802612736 |