Projected 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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ftdoajarticles:oai:doaj.org/article:2025322b4d0a451eae1a3575baf5e2ec 2023-05-15T17:27:36+02:00 Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk M. Gehlen R. Séférian D. O. B. Jones T. Roy R. Roth J. Barry L. Bopp S. C. Doney J. P. Dunne C. Heinze F. Joos J. C. Orr L. Resplandy J. Segschneider J. Tjiputra 2014-12-01T00:00:00Z https://doi.org/10.5194/bg-11-6955-2014 https://doaj.org/article/2025322b4d0a451eae1a3575baf5e2ec EN eng Copernicus Publications http://www.biogeosciences.net/11/6955/2014/bg-11-6955-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6955-2014 https://doaj.org/article/2025322b4d0a451eae1a3575baf5e2ec Biogeosciences, Vol 11, Iss 23, Pp 6955-6967 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-6955-2014 2022-12-31T16:07:10Z 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 500 m 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 CO 2 scenario RCP8.5, pH reductions exceeding −0.2 (−0.3) units are projected in close to 23% (~15%) of North Atlantic deep-sea canyons and ~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 CO 2 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. Article in Journal/Newspaper North Atlantic Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 11 23 6955 6967 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 M. Gehlen R. Séférian D. O. B. Jones T. Roy R. Roth J. Barry L. Bopp S. C. Doney J. P. Dunne C. Heinze F. Joos J. C. Orr L. Resplandy J. Segschneider J. Tjiputra Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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 500 m 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 CO 2 scenario RCP8.5, pH reductions exceeding −0.2 (−0.3) units are projected in close to 23% (~15%) of North Atlantic deep-sea canyons and ~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 CO 2 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 |
Article in Journal/Newspaper |
author |
M. Gehlen R. Séférian D. O. B. Jones T. Roy R. Roth J. Barry L. Bopp S. C. Doney J. P. Dunne C. Heinze F. Joos J. C. Orr L. Resplandy J. Segschneider J. Tjiputra |
author_facet |
M. Gehlen R. Séférian D. O. B. Jones T. Roy R. Roth J. Barry L. Bopp S. C. Doney J. P. Dunne C. Heinze F. Joos J. C. Orr L. Resplandy J. Segschneider J. Tjiputra |
author_sort |
M. Gehlen |
title |
Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_short |
Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_full |
Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_fullStr |
Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_full_unstemmed |
Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
title_sort |
projected ph reductions by 2100 might put deep north atlantic biodiversity at risk |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-6955-2014 https://doaj.org/article/2025322b4d0a451eae1a3575baf5e2ec |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_source |
Biogeosciences, Vol 11, Iss 23, Pp 6955-6967 (2014) |
op_relation |
http://www.biogeosciences.net/11/6955/2014/bg-11-6955-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6955-2014 https://doaj.org/article/2025322b4d0a451eae1a3575baf5e2ec |
op_doi |
https://doi.org/10.5194/bg-11-6955-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
23 |
container_start_page |
6955 |
op_container_end_page |
6967 |
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1766119777084899328 |