2023
DOI: 10.1038/s43247-023-00947-7
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Anthropogenic acidification of surface waters drives decreased biogenic calcification in the Mediterranean Sea

Sven Pallacks,
Patrizia Ziveri,
Ralf Schiebel
et al.

Abstract: 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 pla… Show more

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Cited by 3 publications
(2 citation statements)
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“…Firstly, the Mediterranean Sea is supersaturated with respect to calcite (Álvarez et al, 2014;Millero et al, 1979) and the depth of the studied material is substantially shallower than the calcite saturation horizon (Álvarez et al, 2014). Secondly, recent work suggests that calcite experiences little to negligible changes in the water column and burial in recent sediments (Béjard et al, 2023;Pallacks et al, 2023). All this evidence suggests that dissolution played a negligible role in the preservation of planktonic foraminifera preserved in the sediment record in the study region.…”
Section: Recent Planktonic Foraminifera Assemblage Comparison With Se...mentioning
confidence: 83%
See 1 more Smart Citation
“…Firstly, the Mediterranean Sea is supersaturated with respect to calcite (Álvarez et al, 2014;Millero et al, 1979) and the depth of the studied material is substantially shallower than the calcite saturation horizon (Álvarez et al, 2014). Secondly, recent work suggests that calcite experiences little to negligible changes in the water column and burial in recent sediments (Béjard et al, 2023;Pallacks et al, 2023). All this evidence suggests that dissolution played a negligible role in the preservation of planktonic foraminifera preserved in the sediment record in the study region.…”
Section: Recent Planktonic Foraminifera Assemblage Comparison With Se...mentioning
confidence: 83%
“…As marine calcifying organisms, they are considered particularly vulnerable to the ongoing ocean warming and acidification (Bijma et al, 2002;Fox et al, 2020). Shell calcification of several foraminifera species has been showed to decrease in response to ocean acidification, and therefore, changes in the weight of their shells are considered an indicator of the ocean acidification impact on different timescales (Béjard et al, 2023;de Moel et al, 2009;Fox et al, 2020;Kroeker et al, 2013;Moy et al, 2009;Pallacks et al, 2023). In contrast, ocean warming has been proposed to produce an opposite effect on foraminifera calcification, as some studies have documented that an increase in water temperature results in larger shells and enhanced growth rates (Lombard et al, 2011(Lombard et al, , 2009Schmidt et al, 2006).…”
Section: Introductionmentioning
confidence: 99%