EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk
This study aims to evaluate the potential for impacts of ocean acidification on North Atlantic deep-sea ecosystems in response to IPCC AR5 Representative Concentration Pathways (RCPs). Deep-sea biota is likely highly vulnerable to changes in seawater chemistry and sensitive to moderate excursions in...
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ftird:oai:ird.fr:fdi:010063157 2023-05-15T17:27:21+02:00 EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk Gehlen, M. Seferian, R. Jones, D. O. B. Roy, Tilla Roth, R. Barry, J. Bopp, L. Doney, S. C. Dunne, J. P. Heinze, C. Joos, F. Orr, J. C. Resplandy, L. Segschneider, J. Tjiputra, J. ATLANTIQUE NORD 2014 text/pdf http://www.documentation.ird.fr/hor/fdi:010063157 EN eng http://www.documentation.ird.fr/hor/fdi:010063157 oai:ird.fr:fdi:010063157 Gehlen M., Seferian R., Jones D. O. B., Roy Tilla, Roth R., Barry J., Bopp L., Doney S. C., Dunne J. P., Heinze C., Joos F., Orr J. C., Resplandy L., Segschneider J., Tjiputra J. EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk. Biogeosciences, 2014, 11 (23), p. 6955-6967. text 2014 ftird 2020-08-21T06:53:12Z This study aims to evaluate the potential for impacts of ocean acidification on North Atlantic deep-sea ecosystems in response to IPCC AR5 Representative Concentration Pathways (RCPs). Deep-sea biota is likely highly vulnerable to changes in seawater chemistry and sensitive to moderate excursions in pH. Here we show, from seven fully coupled Earth system models, that for three out of four RCPs over 17% of the seafloor area below 500m depth in the North Atlantic sector will experience pH reductions exceeding -0.2 units by 2100. Increased stratification in response to climate change partially alleviates the impact of ocean acidification on deep benthic environments. We report on major pH reductions over the deep North Atlantic seafloor (depth >500 m) and at important deep-sea features, such as seamounts and canyons. By 2100, and under the high CO2 scenario RCP8.5, pH reductions exceeding -0.2 (-0.3) units are projected in close to 23% (similar to 15 %) of North Atlantic deep-sea canyons and similar to 8% (3 %) of seamounts - including seamounts proposed as sites of marine protected areas. The spatial pattern of impacts reflects the depth of the pH perturbation and does not scale linearly with atmospheric CO2 concentration. Impacts may cause negative changes of the same magnitude or exceeding the current target of 10% of preservation of marine biomes set by the convention on biological diversity, implying that ocean acidification may offset benefits from conservation/management strategies relying on the regulation of resource exploitation. Text North Atlantic Ocean acidification IRD (Institute de recherche pour le développement): Horizon |
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IRD (Institute de recherche pour le développement): Horizon |
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English |
description |
This study aims to evaluate the potential for impacts of ocean acidification on North Atlantic deep-sea ecosystems in response to IPCC AR5 Representative Concentration Pathways (RCPs). Deep-sea biota is likely highly vulnerable to changes in seawater chemistry and sensitive to moderate excursions in pH. Here we show, from seven fully coupled Earth system models, that for three out of four RCPs over 17% of the seafloor area below 500m depth in the North Atlantic sector will experience pH reductions exceeding -0.2 units by 2100. Increased stratification in response to climate change partially alleviates the impact of ocean acidification on deep benthic environments. We report on major pH reductions over the deep North Atlantic seafloor (depth >500 m) and at important deep-sea features, such as seamounts and canyons. By 2100, and under the high CO2 scenario RCP8.5, pH reductions exceeding -0.2 (-0.3) units are projected in close to 23% (similar to 15 %) of North Atlantic deep-sea canyons and similar to 8% (3 %) of seamounts - including seamounts proposed as sites of marine protected areas. The spatial pattern of impacts reflects the depth of the pH perturbation and does not scale linearly with atmospheric CO2 concentration. Impacts may cause negative changes of the same magnitude or exceeding the current target of 10% of preservation of marine biomes set by the convention on biological diversity, implying that ocean acidification may offset benefits from conservation/management strategies relying on the regulation of resource exploitation. |
format |
Text |
author |
Gehlen, M. Seferian, R. Jones, D. O. B. Roy, Tilla Roth, R. Barry, J. Bopp, L. Doney, S. C. Dunne, J. P. Heinze, C. Joos, F. Orr, J. C. Resplandy, L. Segschneider, J. Tjiputra, J. |
spellingShingle |
Gehlen, M. Seferian, R. Jones, D. O. B. Roy, Tilla Roth, R. Barry, J. Bopp, L. Doney, S. C. Dunne, J. P. Heinze, C. Joos, F. Orr, J. C. Resplandy, L. Segschneider, J. Tjiputra, J. EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
author_facet |
Gehlen, M. Seferian, R. Jones, D. O. B. Roy, Tilla Roth, R. Barry, J. Bopp, L. Doney, S. C. Dunne, J. P. Heinze, C. Joos, F. Orr, J. C. Resplandy, L. Segschneider, J. Tjiputra, J. |
author_sort |
Gehlen, M. |
title |
EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_short |
EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_full |
EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_fullStr |
EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_full_unstemmed |
EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_sort |
eprojected ph reductions by 2100 might put deep north atlantic biodiversity at risk |
publishDate |
2014 |
url |
http://www.documentation.ird.fr/hor/fdi:010063157 |
op_coverage |
ATLANTIQUE NORD |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010063157 oai:ird.fr:fdi:010063157 Gehlen M., Seferian R., Jones D. O. B., Roy Tilla, Roth R., Barry J., Bopp L., Doney S. C., Dunne J. P., Heinze C., Joos F., Orr J. C., Resplandy L., Segschneider J., Tjiputra J. EProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risk. Biogeosciences, 2014, 11 (23), p. 6955-6967. |
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1766119399527284736 |