Fossil organic carbon utilization in marine Arctic fjord sediments by subsurface micro-organisms

• Main Authors: Ruben, Manuel, Hefter, Jens, Schubotz, Florence, Geibert, Walter, Butzin, Martin, Gentz, Torben, Grotheer, Hendrik, Forwick, Matthias, Szczuciński, Witold, Mollenhauer, Gesine
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2023
• Subjects: organic carbon; radiocarbon; petrogenic carbon; Svalbard; Hornsund; carbon cycle; fjord; fjord sediments; marine sediments; 210Pb dating; 137Cs dating; biomarkers; Arctic; polar research; lipid-fatty acids; carbon burial
• Online Access: https://hdl.handle.net/10593/27327

Rock-derived or petrogenic organic carbon has traditionally been regarded as being non-bioavailable and bypassing the active carbon cycle when eroded. However, it has become apparent that this organic carbon might not be so inert, especially in fjord systems where petrogenic organic carbon influxes...