Iron Dynamics during Thermokarst Processes in the Yedoma Domain and Implications for Interactions between Iron and Organic Carbon

• Main Authors: Monhonval, Arthur, Mauclet, Elisabeth, Pereira, Benoit, Bemelmans, Nathan, Schirrmeister, Lutz, Strauss, Jens, Opfergelt, Sophie, Hirst, Catherine, Vandeuren, Aubry, Grosse, Guido, Fuchs, Matthias
• Format: Conference Object
• Language: unknown
• Published: AGU 2020
• Subjects: Ice; laptev; Laptev Sea; New Siberian Islands; permafrost; Thermokarst; Alaska; Siberia
• Online Access: https://epic.awi.de/id/eprint/53795/; https://agu.confex.com/agu/fm20/meetingapp.cgi/Paper/720573; https://hdl.handle.net/10013/epic.34af4e00-111d-48a6-b10e-69acffb4cdd6

Iron (Fe) plays a key role in mediating organic carbon (OC) decomposition rates in permafrost soils. Fe-bearing minerals stabilize OC through complexation, co-precipitation or aggregation processes and thus hinder degradation of OC. In addition, Fe(III) reduction can inhibit methanogenesis and decre...