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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 23
Biogeosciences, 11, 6955–6967, 2014
https://doi.org/10.5194/bg-11-6955-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 11, 6955–6967, 2014
https://doi.org/10.5194/bg-11-6955-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

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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Cited articles  
Barry, J. P., Buck, K. R., Lovera, C., Kuhnz, L., and Whaling, P. J.: Utility of deep sea CO2 release experiments in understanding the biology of a high-CO2 ocean: Effects of hypercapnia on deep sea meiofauna, J. Geophys. Res., 110, C09S12, https://doi.org/10.1029/2004JC002629, 2005.
Barry, J. P., Widdicombe, S., and Hall-Spencer, J. M.: Effects of ocean acidification on marine biodiversity and ecosystem function, in: Ocean Acidification, edited by: Gattuso, J.-P. and Hansson, L., Oxford University Press, 192–209, 2011.
Barry, J. P., Buck, K. R., Lovera, C., Brewer, P. G., Seibel, B. A., Drazen, J. C., Tamburri, M. N., Whaling, P. J., Kuhnz, L., and Pane, E. F.: The response of abyssal organisms to low pH conditions during a series of CO2-release experiments simulating deep-sea carbon sequestration, Deep-Sea Res. Pt. II, 92, 249–260, 2013.
Billé, R., Kelly, R., Biastoch, A., Harrould-Kolieb, E., Herr, D., Joos, F., Kroeker, K., Laffoley, D., Oschlies, A., and Gattuso, J.-P.: Taking action against ocean acidification: A review of management and policy options, Environ, Manag,, 52, 761–779, 2013.
Bopp, L., Resplandy, L., Orr, J. C., Doney, S. C., Dunne, J. P., Gehlen, M., Halloran, P., Heinze, C., Ilyina, T., Séférian, R., Tjiputra, J., and Vichi, M.: Multiple stressors of ocean ecosystems in the 21st century: projections with CMIP5 models, Biogeosciences, 10, 6225–6245, https://doi.org/10.5194/bg-10-6225-2013, 2013.
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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.
This study evaluates potential impacts of pH reductions on North Atlantic deep-sea ecosystems in...
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