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dc.contributor.authorGehlen, Marioneng
dc.contributor.authorSéférian, Rolandeng
dc.contributor.authorJones, Daniel O.B.eng
dc.contributor.authorRoy, Tillaeng
dc.contributor.authorRoth, Raphaeleng
dc.contributor.authorBarry, James P.eng
dc.contributor.authorBopp, Laurenteng
dc.contributor.authorDoney, Scott C.eng
dc.contributor.authorDunne, John P.eng
dc.contributor.authorHeinze, Christopheng
dc.contributor.authorJoos, Fortunateng
dc.contributor.authorOrr, James C.eng
dc.contributor.authorResplandy, Laureeng
dc.contributor.authorSegschneider, Joachimeng
dc.contributor.authorTjiputra, Jerryeng
dc.description.abstractThis 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.en_US
dc.publisherCopernicus Publicationsen_US
dc.rightsAttribution CC BYeng
dc.titleProjected pH reductions by 2100 might put deep North Atlantic biodiversity at risken_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2014 The Authorsen_US
dc.relation.projectNotur: NN2980K
dc.relation.projectNorStore: NS2345K
dc.relation.projectNotur: NN2345K
dc.relation.projectNorStore: NS2980K
dc.relation.projectEU: 264879
dc.relation.projectEU: 211384
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452
dc.subject.nsiVDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452

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