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Página principal > Artículos > Artículos publicados > Anthropogenic acidification of surface waters drives decreased biogenic calcification in the Mediterranean Sea |
Fecha: | 2023 |
Resumen: | Anthropogenic carbon dioxide emissions directly or indirectly drive ocean acidification, warming and enhanced stratification. The combined effects of these processes on marine planktic calcifiers at decadal to centennial timescales are poorly understood. Here, we analyze size normalized planktic foraminiferal shell weight, shell geochemistry, and supporting proxies from 3 sediment cores in the Mediterranean Sea spanning several centuries. Our results allow us to investigate the response of surface-dwelling planktic foraminifera to increases in atmospheric carbon dioxide. We find that increased anthropogenic carbon dioxide levels led to basin wide reductions in size normalized weights by modulating foraminiferal calcification. Carbon (δ13C) and boron (δ11B) isotopic compositions also indicate the increasing influence of fossil fuel derived carbon dioxide and decreasing pH, respectively. Alkenone concentrations and test accumulation rates indicate that warming and changes in biological productivity are insufficient to offset acidification effects. We suggest that further increases in atmospheric carbon dioxide will drive ongoing reductions in marine biogenic calcification in the Mediterranean Sea. |
Ayudas: | Ministerio de Ciencia e Innovación CEX2019-000940-M Ministerio de Economía y Competitividad MDM-2015-0552 Agencia Estatal de Investigación PID2020-113526RB-I00 European Commission 265103 European Commission 805246 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00640 Ministerio de Ciencia e Innovación CEX2018-000794-S |
Nota: | Unidad de excelencia María de Maeztu CEX2019-000940-M |
Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Lengua: | Anglès |
Documento: | Article ; recerca ; Versió publicada |
Materia: | Calcification ; Carbon 13 ; Ph ; Geochemistry ; Anthropogenic factors ; Fossil fuels ; Boron ; Ocean acidification ; Surface water ; Carbon dioxide ; Human influences ; Acidification ; Emissions ; Carbon dioxide emissions ; Cores |
Publicado en: | Communications earth & environment, Vol. 4 (August 2023) , art. 301, ISSN 2662-4435 |
11 p, 1.8 MB |