Sensitivity of coral calcification to ocean acidification: a meta‐analysis

Abstract To date, meta‐analyses of effects of acidification have focused on the overall strength of evidence for statistically significant responses; however, to anticipate likely consequences of ocean acidification, quantitative estimates of the magnitude of likely responses are also needed. Herein...

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Published in:Global Change Biology
Main Authors: Chan, Neil C. S., Connolly, Sean R.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2012
Subjects:
Online Access:http://dx.doi.org/10.1111/gcb.12011
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spelling crwiley:10.1111/gcb.12011 2024-09-30T14:40:44+00:00 Sensitivity of coral calcification to ocean acidification: a meta‐analysis Chan, Neil C. S. Connolly, Sean R. 2012 http://dx.doi.org/10.1111/gcb.12011 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12011 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12011 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 19, issue 1, page 282-290 ISSN 1354-1013 1365-2486 journal-article 2012 crwiley https://doi.org/10.1111/gcb.12011 2024-09-19T04:18:50Z Abstract To date, meta‐analyses of effects of acidification have focused on the overall strength of evidence for statistically significant responses; however, to anticipate likely consequences of ocean acidification, quantitative estimates of the magnitude of likely responses are also needed. Herein, we use random effects meta‐analysis to produce a systematically integrated measure of the distribution of magnitudes of the response of coral calcification to decreasing Ω Arag . We also tested whether methodological and biological factors that have been hypothesized to drive variation in response magnitude explain a significant proportion of the among‐study variation. We found that the overall mean response of coral calcification is ~15% per unit decrease in Ω Arag over the range 2 < Ω Arag < 4. Among‐study variation is large (standard deviation of 8% per unit decrease in Ω Arag ). Neither differences in carbonate chemistry manipulation method, study duration, irradiance level, nor study species growth rate explained a significant proportion of the among‐study variation. However, studies employing buoyant weighting found significantly smaller decreases in calcification per unit Ω Arag (~10%), compared with studies using the alkalinity anomaly technique (~25%). These differences may be due to the greater tendency for the former to integrate over light and dark calcification. If the existing body of experimental work is indeed representative of likely responses of corals in nature, our results imply that, under business as usual conditions, declines in coral calcification by end‐of‐century will be ~22%, on average, or ~15% if only studies integrating light and dark calcification are considered. These values are near the low end of published projections, but support the emerging view that variability due to local environmental conditions and species composition is likely to be substantial. Article in Journal/Newspaper Ocean acidification Wiley Online Library Global Change Biology 19 1 282 290
institution Open Polar
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language English
description Abstract To date, meta‐analyses of effects of acidification have focused on the overall strength of evidence for statistically significant responses; however, to anticipate likely consequences of ocean acidification, quantitative estimates of the magnitude of likely responses are also needed. Herein, we use random effects meta‐analysis to produce a systematically integrated measure of the distribution of magnitudes of the response of coral calcification to decreasing Ω Arag . We also tested whether methodological and biological factors that have been hypothesized to drive variation in response magnitude explain a significant proportion of the among‐study variation. We found that the overall mean response of coral calcification is ~15% per unit decrease in Ω Arag over the range 2 < Ω Arag < 4. Among‐study variation is large (standard deviation of 8% per unit decrease in Ω Arag ). Neither differences in carbonate chemistry manipulation method, study duration, irradiance level, nor study species growth rate explained a significant proportion of the among‐study variation. However, studies employing buoyant weighting found significantly smaller decreases in calcification per unit Ω Arag (~10%), compared with studies using the alkalinity anomaly technique (~25%). These differences may be due to the greater tendency for the former to integrate over light and dark calcification. If the existing body of experimental work is indeed representative of likely responses of corals in nature, our results imply that, under business as usual conditions, declines in coral calcification by end‐of‐century will be ~22%, on average, or ~15% if only studies integrating light and dark calcification are considered. These values are near the low end of published projections, but support the emerging view that variability due to local environmental conditions and species composition is likely to be substantial.
format Article in Journal/Newspaper
author Chan, Neil C. S.
Connolly, Sean R.
spellingShingle Chan, Neil C. S.
Connolly, Sean R.
Sensitivity of coral calcification to ocean acidification: a meta‐analysis
author_facet Chan, Neil C. S.
Connolly, Sean R.
author_sort Chan, Neil C. S.
title Sensitivity of coral calcification to ocean acidification: a meta‐analysis
title_short Sensitivity of coral calcification to ocean acidification: a meta‐analysis
title_full Sensitivity of coral calcification to ocean acidification: a meta‐analysis
title_fullStr Sensitivity of coral calcification to ocean acidification: a meta‐analysis
title_full_unstemmed Sensitivity of coral calcification to ocean acidification: a meta‐analysis
title_sort sensitivity of coral calcification to ocean acidification: a meta‐analysis
publisher Wiley
publishDate 2012
url http://dx.doi.org/10.1111/gcb.12011
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12011
https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12011
genre Ocean acidification
genre_facet Ocean acidification
op_source Global Change Biology
volume 19, issue 1, page 282-290
ISSN 1354-1013 1365-2486
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/gcb.12011
container_title Global Change Biology
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