Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes.

ABSTRACT: Process-based, mechanistic investigations of organic matter transformation and diagenesis directly beneath the sediment-water interface (SWI) in Arctic continental shelves are vital as these regions are at greatest risk of future change. This is in part due to disruptions in benthic-pelagic coupling associated with ocean current change and sea ice retreat. Here, we focus on a high-resolution, multi-disciplinary set of measurements that illustrate how microbial processes involved in the degradation of organic matter are directly coupled with inorganic and organic geochemical sediment properties (measured and modelled) as well as the extent/depth of bioturbation. We find direct links between aerobic processes, reactive organic carbon and highest abundances of bacteria and archaea in the uppe

SUBMITTER: Stevenson MA 

PROVIDER: S-EPMC7481670 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature