Consulta: creatorFacets:"März, Christian"
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Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments
Provedor de dados: 5
Autores: Faust, Johan C.; Tessin, Allyson; Fisher, Ben J.; Zindorf, Mark Sebastian; Papadaki, Sonia; Hendry, Katharine R.; Doyle, Katherine A.; März, Christian.
Burial of organic material in marine sediments represents a dominant natural mechanism of long-term carbon sequestration globally, but critical aspects of this carbon sink remain unresolved. Investigation of surface sediments led to the proposition that on average 10-20% of sedimentary organic carbon is stabilised and physically protected against microbial degradation through binding to reactive metal (e.g. iron and manganese) oxides. Here we examine the long-term efficiency of this rusty carbon sink by analysing the chemical composition of sediments and pore waters from four locations in the Barents Sea. Our findings show that the carbon-iron coupling persists below the uppermost, oxygenated sediment layer over thousands of years. We further propose that...
Tipo: Text
Palavras-chave: Carbon cycle; Geochemistry.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00675/78755/80923.pdf