Hydrocarbon-related microbial processes in the deep sediments of the Eastern Mediterranean Levantine Basin
| Autor: | Beverly Goodman-Tchernov, Gilad Antler, Dan Tchernov, Alexandra V. Turchyn, Orit Sivan, Dwight F. Coleman, Eli Shemesh, James A. Austin, Rami Tsadok, Maxim Rubin-Blum, Yizhaq Makovsky |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
DNA
Bacterial Geologic Sediments Population chemistry.chemical_element Oxygen Isotopes Biology Applied Microbiology and Biotechnology Microbiology Methane 03 medical and health sciences chemistry.chemical_compound Mediterranean sea Sulfur Isotopes Mediterranean Sea 14. Life underwater Sulfate Sulfate-reducing bacteria education Phylogeny 030304 developmental biology Carbon Isotopes 0303 health sciences education.field_of_study Bacteria Ecology Sulfates 030306 microbiology Sediment Archaea Sulfur DNA Archaeal chemistry 13. Climate action Environmental chemistry Anaerobic oxidation of methane Oxidation-Reduction |
| Zdroj: | FEMS Microbiology Ecology |
| ISSN: | 0168-6496 |
| DOI: | 10.1111/1574-6941.12264 |
| Popis: | During the 2011 exploration season of the EV Nautilus in the Mediterranean Sea, we conducted a multidisciplinary study, aimed at exploring the microbial populations below the sediment-water interface (SWI) in the hydrocarbon-rich environments of the Levantine basin. Two c. 1000-m-deep locations were sampled: sediments fueled by methane seepage at the toe of the Palmachim disturbance and a patch of euxinic sediment with high sulfide and methane content offshore Acre, enriched by hydrocarbon from an unknown source. We describe the composition of the microbial population in the top 5 cm of the sediment with 1 cm resolution, accompanied by measurements of methane and sulfate concentrations, and the isotopic composition of this methane and sulfate (δ¹³C(CH₄), δ¹⁸O(SO₄), and δ³⁴S(SO₄)). Our geochemical and microbiological results indicate the presence of the anaerobic methane oxidation (AOM) coupled to bacterial sulfate reduction (BSR). We show that complex methane and sulfur metabolizing microbial populations are present in both locations, although their community structure and metabolic preferences differ due to potential variation in the hydrocarbon source. |
| Databáze: | OpenAIRE |
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