Microbial reefs in the Black Sea fueled by anaerobic oxidation of methane
| Autor: | K. Peterknecht, Tina Treude, Thomas Pape, Katja Nauhaus, Bo Barker Jørgensen, Volker Thiel, Armin Gieseke, Walter Michaelis, Katrin Knittel, Friedrich Widdel, Antje Boetius, Jörn Peckmann, Rudolf Amann, Martin Blumenberg, Maksim B. Gulin, Richard Seifert, Nikolai V. Pimenov |
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| Předmět: |
Deltaproteobacteria
Geologic Sediments Oceans and Seas Carbonates Biomass Biology 010502 geochemistry & geophysics 01 natural sciences Methane Carbon cycle 03 medical and health sciences chemistry.chemical_compound Chemical Precipitation Seawater 14. Life underwater Microbial mat Anaerobiosis Sulfate-reducing bacteria Ecosystem 0105 earth and related environmental sciences 0303 health sciences Multidisciplinary Sulfur-Reducing Bacteria 030306 microbiology Ecology Sulfates food and beverages Lipid Metabolism Anoxic waters Archaea chemistry Microscopy Fluorescence 13. Climate action Environmental chemistry Anaerobic oxidation of methane Carbonate Thermodynamics Oxidation-Reduction |
| Zdroj: | Aarhus University Michaelis, W, Seifert, R, Nauhaus, K, Treude, T, Thiel, V, Blumenberg, M, Knittel, K, Gieseke, A, Peterknecht, K, Pape, T, Boetius, A, Amann, R, Jørgensen, BB, Widdel, F, Peckmann, J, Pimenov, NV & Gulin, MB 2002, ' Microbial reefs in the Black Sea fueled by anaerobic oxidation of methane ', Science, vol. 297, no. 5583, pp. 1013-1015 . |
| Popis: | Massive microbial mats covering up to 4-meter-high carbonate buildups prosper at methane seeps in anoxic waters of the northwestern Black Sea shelf. Strong 13 C depletions indicate an incorporation of methane carbon into carbonates, bulk biomass, and specific lipids. The mats mainly consist of densely aggregated archaea (phylogenetic ANME-1 cluster) and sulfate-reducing bacteria ( Desulfosarcina/Desulfococcus group). If incubated in vitro, these mats perform anaerobic oxidation of methane coupled to sulfate reduction. Obviously, anaerobic microbial consortia can generate both carbonate precipitation and substantial biomass accumulation, which has implications for our understanding of carbon cycling during earlier periods of Earth's history. |
| Databáze: | OpenAIRE |
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