Articles | Volume 11, issue 23
Biogeosciences, 11, 6955–6967, 2014
https://doi.org/10.5194/bg-11-6955-2014
Biogeosciences, 11, 6955–6967, 2014
https://doi.org/10.5194/bg-11-6955-2014

Research article 11 Dec 2014

Research article | 11 Dec 2014

Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk

M. Gehlen et al.

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Short summary
This study evaluates potential impacts of pH reductions on North Atlantic deep-sea ecosystems in response to latest IPCC scenarios.Multi-model projections of pH changes over the seafloor are analysed with reference to a critical threshold based on palaeo-oceanographic studies, contemporary observations and model results. By 2100 under the most severe IPCC CO2 scenario, pH reductions occur over ~23% of deep-sea canyons and ~8% of seamounts – including seamounts proposed as marine protected areas.
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