| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
The Northeast Atlantic is running out of excess carbonate in the horizon of cold-water corals communities
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| Autores: |
Fontela, Marcos
Perez, Fiz F
Carracedo, Lidia
Padín, Xosé A.
Velo, Antón
García-ibañez, Maribel I.
Lherminier, Pascale
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| Data: |
2020-09
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| Ano: |
2020
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| Resumo: |
The oceanic uptake of atmospheric carbon dioxide (CO2) emitted by human activities alters the seawater carbonate system. Here, the chemical status of the Northeast Atlantic is examined by means of a high-quality database of carbon variables based on the GO-SHIP A25 section (1997–2018). The increase of atmospheric CO2 leads to an increase in ocean anthropogenic carbon (Cant) and a decrease in carbonate that is unequivocal in the upper and mid-layers (0–2,500 m depth). In the mid-layer, the carbonate content in the Northeast Atlantic is maintained by the interplay between the northward spreading of recently conveyed Mediterranean Water with excess of carbonate and the arrival of subpolar-origin waters close to carbonate undersaturation. In this study we show a progression to undersaturation with respect to aragonite that could compromise the conservation of the habitats and ecosystem services developed by benthic marine calcifiers inhabiting that depth-range, such as the cold-water corals (CWC) communities. For each additional ppm in atmospheric pCO2 the waters surrounding CWC communities lose carbonate at a rate of − 0.17 ± 0.02 μmol kg−1 ppm−1. The accomplishment of global climate policies to limit global warming below 1.5–2 ℃ will avoid the exhaustion of excess carbonate in the Northeast Atlantic.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00646/75822/76790.pdf
https://archimer.ifremer.fr/doc/00646/75822/76791.pdf
DOI:10.1038/s41598-020-71793-2
https://archimer.ifremer.fr/doc/00646/75822/
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| Editor: |
Springer Science and Business Media LLC
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| Formato: |
application/pdf
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| Fonte: |
Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2020-09 , Vol. 10 , N. 1 , P. 14174 (10p.)
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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