Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity
Oceanic uptake of anthropogenic carbon dioxide (CO2) has acidified open-ocean surface waters by 0.1 pH units since preindustrial times. Despite unequivocal evidence of ocean acidification (OA) via open-ocean measurements for the past several decades, it has yet to be documented in near-shore and cor...
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ftsouthampton:oai:eprints.soton.ac.uk:385325 2023-07-30T04:05:29+02:00 Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity Yeakel, Kiley L. Andersson, Andreas J. Bates, Nicholas R. Noyes, Timothy J. Collins, Andrew Garley, Rebecca 2015-11-24 https://eprints.soton.ac.uk/385325/ English eng Yeakel, Kiley L., Andersson, Andreas J., Bates, Nicholas R., Noyes, Timothy J., Collins, Andrew and Garley, Rebecca (2015) Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity. Proceedings of the National Academy of Sciences, 112 (47), 14512-14517. (doi:10.1073/pnas.1507021112 <http://dx.doi.org/10.1073/pnas.1507021112>). Article PeerReviewed 2015 ftsouthampton https://doi.org/10.1073/pnas.1507021112 2023-07-09T22:03:32Z Oceanic uptake of anthropogenic carbon dioxide (CO2) has acidified open-ocean surface waters by 0.1 pH units since preindustrial times. Despite unequivocal evidence of ocean acidification (OA) via open-ocean measurements for the past several decades, it has yet to be documented in near-shore and coral reef environments. A lack of long-term measurements from these environments restricts our understanding of the natural variability and controls of seawater CO2-carbonate chemistry and biogeochemistry, which is essential to make accurate predictions on the effects of future OA on coral reefs. Here, in a 5-y study of the Bermuda coral reef, we show evidence that variations in reef biogeochemical processes drive interannual changes in seawater pH and ?aragonite that are partly controlled by offshore processes. Rapid acidification events driven by shifts toward increasing net calcification and net heterotrophy were observed during the summers of 2010 and 2011, with the frequency and extent of such events corresponding to increased offshore productivity. These events also coincided with a negative winter North Atlantic Oscillation (NAO) index, which historically has been associated with extensive offshore mixing and greater primary productivity at the Bermuda Atlantic Time-series Study (BATS) site. Our results reveal that coral reefs undergo natural interannual events of rapid acidification due to shifts in reef biogeochemical processes that may be linked to offshore productivity and ultimately controlled by larger-scale climatic and oceanographic processes. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Ocean acidification University of Southampton: e-Prints Soton Proceedings of the National Academy of Sciences 112 47 14512 14517 |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
Oceanic uptake of anthropogenic carbon dioxide (CO2) has acidified open-ocean surface waters by 0.1 pH units since preindustrial times. Despite unequivocal evidence of ocean acidification (OA) via open-ocean measurements for the past several decades, it has yet to be documented in near-shore and coral reef environments. A lack of long-term measurements from these environments restricts our understanding of the natural variability and controls of seawater CO2-carbonate chemistry and biogeochemistry, which is essential to make accurate predictions on the effects of future OA on coral reefs. Here, in a 5-y study of the Bermuda coral reef, we show evidence that variations in reef biogeochemical processes drive interannual changes in seawater pH and ?aragonite that are partly controlled by offshore processes. Rapid acidification events driven by shifts toward increasing net calcification and net heterotrophy were observed during the summers of 2010 and 2011, with the frequency and extent of such events corresponding to increased offshore productivity. These events also coincided with a negative winter North Atlantic Oscillation (NAO) index, which historically has been associated with extensive offshore mixing and greater primary productivity at the Bermuda Atlantic Time-series Study (BATS) site. Our results reveal that coral reefs undergo natural interannual events of rapid acidification due to shifts in reef biogeochemical processes that may be linked to offshore productivity and ultimately controlled by larger-scale climatic and oceanographic processes. |
format |
Article in Journal/Newspaper |
author |
Yeakel, Kiley L. Andersson, Andreas J. Bates, Nicholas R. Noyes, Timothy J. Collins, Andrew Garley, Rebecca |
spellingShingle |
Yeakel, Kiley L. Andersson, Andreas J. Bates, Nicholas R. Noyes, Timothy J. Collins, Andrew Garley, Rebecca Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
author_facet |
Yeakel, Kiley L. Andersson, Andreas J. Bates, Nicholas R. Noyes, Timothy J. Collins, Andrew Garley, Rebecca |
author_sort |
Yeakel, Kiley L. |
title |
Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
title_short |
Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
title_full |
Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
title_fullStr |
Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
title_full_unstemmed |
Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
title_sort |
shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity |
publishDate |
2015 |
url |
https://eprints.soton.ac.uk/385325/ |
genre |
North Atlantic North Atlantic oscillation Ocean acidification |
genre_facet |
North Atlantic North Atlantic oscillation Ocean acidification |
op_relation |
Yeakel, Kiley L., Andersson, Andreas J., Bates, Nicholas R., Noyes, Timothy J., Collins, Andrew and Garley, Rebecca (2015) Shifts in coral reef biogeochemistry and resulting acidification linked to offshore productivity. Proceedings of the National Academy of Sciences, 112 (47), 14512-14517. (doi:10.1073/pnas.1507021112 <http://dx.doi.org/10.1073/pnas.1507021112>). |
op_doi |
https://doi.org/10.1073/pnas.1507021112 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
112 |
container_issue |
47 |
container_start_page |
14512 |
op_container_end_page |
14517 |
_version_ |
1772817435585413120 |