Feasible Metabolisms in High pH Springs of the Philippines

作者: Dawn Cardace , D'Arcy R. Meyer-Dombard , Kristin M. Woycheese , Carlo A. Arcilla

DOI: 10.3389/FMICB.2015.00010

关键词: Ultramafic rockBiologyMethaneOphioliteSulfurDissolved organic carbonMicrobial metabolismAmmoniaGeochemical modelingMineralogyEnvironmental chemistry

摘要: A field campaign targeting high pH, H2-, and CH4-emitting serpentinite-associated springs in the Zambales Palawan Ophiolites of Philippines was conducted 2012-2013, enabled description several sourced altered pillow basalts, gabbros, peridotites. We combine observations temperature, conductivity, dissolved oxygen, oxidation-reduction potential with analyses major ions, inorganic carbon, organic gas phases order to model activities selected important microbial metabolism, rank feasible metabolic reactions based on energy yield. document changing geochemical inventories these between sampling years, examine how environment supports or prevents function certain metabolisms. In all, this geochemistry-based assessment metabolisms indicates methane cycling, hydrogen oxidation, some iron sulfur metabolisms, ammonia oxidation are continental site serpentinization.

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