Feasible metabolisms in high pH springs of the Philippines
| Autor: | Carlo A. Arcilla, K. M. Woycheese, Dawn Cardace, D'Arcy R. Meyer-Dombard |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Microbiology (medical)
Philippines Islands ultramafic Microbial metabolism chemistry.chemical_element Mineralogy serpentinization Biology Ophiolite Sulfur Microbiology Methane Ammonia chemistry.chemical_compound chemistry 13. Climate action Ultramafic rock Environmental chemistry Dissolved organic carbon microbial metabolisms Original Research Article geochemical modeling high pH springs Geochemical modeling |
| Zdroj: | Frontiers in Microbiology |
| ISSN: | 1664-302X |
| DOI: | 10.3389/fmicb.2015.00010 |
| Popis: | A field campaign targeting high pH, H2-, and CH4-emitting serpentinite-associated springs in the Zambales and Palawan Ophiolites of the Philippines was conducted in 2012-2013, and enabled description of several springs sourced in altered pillow basalts, gabbros, and peridotites. We combine field observations of pH, temperature, conductivity, dissolved oxygen, and oxidation-reduction potential with analyses of major ions, dissolved inorganic carbon, dissolved organic carbon, and dissolved gas phases in order to model the activities of selected phases important to microbial metabolism, and to rank feasible metabolic reactions based on energy yield. We document changing geochemical inventories in these springs between sampling years, and examine how the environment supports or prevents the function of certain microbial metabolisms. In all, this geochemistry-based assessment of feasible metabolisms indicates methane cycling, hydrogen oxidation, some iron and sulfur metabolisms, and ammonia oxidation are feasible reactions in this continental site of serpentinization. |
| Databáze: | OpenAIRE |
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