A potential contribution of a Fe(III)-rich red clay horizon to methane release: Biogenetic magnetite-mediated methanogenesis

• Published in: Catena (Giessen) Vol. 181; p. 104081
• Main Authors: Xiao, Leilei, Wei, Wenchao, Luo, Min, Xu, Hengduo, Feng, Dawei, Yu, Jiafeng, Huang, Jiafang, Liu, Fanghua
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2019
• Subjects: bacteria; clay; community structure; Direct interspecies electron transfer; electron transfer; electrons; in situ critical zone; inoculum; iron; Magnetite; methane; methane production; Methane release; Methanogenesis; methanogens; Methanosarcina; microbial communities; physicochemical properties; Red clay horizon; river deltas; Shewanella; soil chemical properties; soil physical properties; soil sampling; terrestrial ecosystems; wetlands; Yellow River; Yellow River; in situ critical zone; Magnetite; Red clay horizon; Methane release; Direct interspecies electron transfer; Methanogenesis

According to prior laboratory research evidence, the formation of a conductive secondary mineral to accelerate electron transfer is an important factor in methanogenesis. However, the promotion of methanogenesis by a secondary mineral is rarely found in the in situ terrestrial ecosystem. In this stu...