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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Online Access: | https://hdl.handle.net/1956/10439 https://doi.org/10.5194/bg-11-6955-2014 |
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ftunivbergen:oai:bora.uib.no:1956/10439 2023-05-15T17:27:36+02:00 Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk Gehlen, Marion Séférian, Roland Jones, Daniel O.B. Roy, Tilla Roth, Raphael Barry, James P. Bopp, Laurent Doney, Scott C. Dunne, John P. Heinze, Christoph Joos, Fortunat Orr, James C. Resplandy, Laure Segschneider, Joachim Tjiputra, Jerry 2015-07-30T11:08:28Z application/pdf https://hdl.handle.net/1956/10439 https://doi.org/10.5194/bg-11-6955-2014 eng eng Copernicus Publications Notur: NN2980K NorStore: NS2345K Notur: NN2345K NorStore: NS2980K EU: 264879 EU: 211384 urn:issn:1726-4170 https://hdl.handle.net/1956/10439 https://doi.org/10.5194/bg-11-6955-2014 cristin:1184211 Attribution CC BY http://creativecommons.org/licenses/by/3.0/ Copyright 2014 The Authors Biogeosciences 11 23 6955-6967 VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Peer reviewed Journal article 2015 ftunivbergen https://doi.org/10.5194/bg-11-6955-2014 2023-03-14T17:39:29Z 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 CO2 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 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. publishedVersion Article in Journal/Newspaper North Atlantic Ocean acidification University of Bergen: Bergen Open Research Archive (BORA-UiB) Biogeosciences 11 23 6955 6967 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 Gehlen, Marion Séférian, Roland Jones, Daniel O.B. Roy, Tilla Roth, Raphael Barry, James P. Bopp, Laurent Doney, Scott C. Dunne, John P. Heinze, Christoph Joos, Fortunat Orr, James C. Resplandy, Laure Segschneider, Joachim Tjiputra, Jerry Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452 |
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 CO2 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 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. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Gehlen, Marion Séférian, Roland Jones, Daniel O.B. Roy, Tilla Roth, Raphael Barry, James P. Bopp, Laurent Doney, Scott C. Dunne, John P. Heinze, Christoph Joos, Fortunat Orr, James C. Resplandy, Laure Segschneider, Joachim Tjiputra, Jerry |
author_facet |
Gehlen, Marion Séférian, Roland Jones, Daniel O.B. Roy, Tilla Roth, Raphael Barry, James P. Bopp, Laurent Doney, Scott C. Dunne, John P. Heinze, Christoph Joos, Fortunat Orr, James C. Resplandy, Laure Segschneider, Joachim Tjiputra, Jerry |
author_sort |
Gehlen, Marion |
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 |
2015 |
url |
https://hdl.handle.net/1956/10439 https://doi.org/10.5194/bg-11-6955-2014 |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_source |
Biogeosciences 11 23 6955-6967 |
op_relation |
Notur: NN2980K NorStore: NS2345K Notur: NN2345K NorStore: NS2980K EU: 264879 EU: 211384 urn:issn:1726-4170 https://hdl.handle.net/1956/10439 https://doi.org/10.5194/bg-11-6955-2014 cristin:1184211 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/3.0/ Copyright 2014 The Authors |
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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1766119777300905984 |