Articles | Volume 14, issue 12
Biogeosciences, 14, 3067–3082, 2017
https://doi.org/10.5194/bg-14-3067-2017
Biogeosciences, 14, 3067–3082, 2017
https://doi.org/10.5194/bg-14-3067-2017

Research article 22 Jun 2017

Research article | 22 Jun 2017

Benthic foraminiferal Mn / Ca ratios reflect microhabitat preferences

Karoliina A. Koho et al.

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Short summary
Here we report Mn / Ca ratios in living benthic foraminifera from the NE Japan margin. The results show that the Mn incorporation directly reflects the environment where the foraminifera calcify. Foraminifera that live deeper in sediment, under greater redox stress, generally incorporate more Mn into their carbonate skeletons. As such, foraminifera living close to the Mn reduction zone in sediment appear promising tools for paleoceanographic reconstructions of sedimentary redox conditions.
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