Lake Pavin History, geology, biogeochemistry, and sedimentology of a deep meromictic maar lake
© Springer International Publishing Switzerland 2016 255 T. Sime-Ngando et al. (eds.), Lake Pavin, DOI 10.1007/978-3-319-39961-4 ...
256 Keywords Methane cycle • Methanogens • Methanotrophs • Ferric iron reduction • Fermentation • Anaerobic food chain • Biogeoc ...
257 chemical carbon cycle but also in the cycles of many inor- ganic elements. CH 4 is therefore at the center of scientific and ...
258 methanogens). These anaerobic microorganisms are encoun- tered in the profound and epilimnetic sediments as well as in anoxi ...
259 Fig. 16.1 Methane profiles and methanogens in Lake Pavin. (a) Schematic representation of CH 4 profiles in the oxic water co ...
260 16.2.4.4 Methane Emissions to the Atmosphere The CH 4 concentrations at the water surface being higher than the concentratio ...
261 directly assimilated by different microbial respiratory processes (sulfate-reduction, methanogenesis, denitrifi- cation, dis ...
262 Hydrogenotrophic methanogenesis: reduction of CO 2 with hydrogen (hydrogenotrophic methanogens) or for- mate (formatotrophi ...
263 Box 16.1: Which Nucleic-Acids Biomarkers May Be Used to Investigate the Diversity of Methanogens and Methanotrophs? Investig ...
264 16.3.2.6 Diversity, Distribution and Abundance of Methanogens in Lake Pavin In freshwater lakes, analyses of clone libraries ...
265 methanogenic communities as well as MPRs (Borrel et al. 2011 ). Accordingly, cold adapted methanogens dominate in the hypoli ...
266 Box 16.2: Microcalorimetry: A Powerful Tool for Monitoring Metabolic Activities Since all living organisms produce heat, cal ...
267 Temperature: the cultural approaches performed from Pavin sediment samples led to the enrichment and isolation of several m ...
268 Syntrophic associations between fermentative bacteria and methanogenic archaea involve the exchange of hydro- gen, formate o ...
269 Fig. 16.4 Schematic representation of some culture parameters of the fermentative strain BS2 isolated from Lake Pavin. (a) E ...
270 radation of organic compounds, resulting in the produc- tion of sulfide (H 2 S). Ferric iron reduction^10 : Ferric iron (Fe ...
271 16.3.3.7 Top-Down Regulations: Impact of Virus The impact of viruses on methanogens and then on MPRs is potentially of impor ...
272 Step 1: CARD-FISH FISH is a printing method targeting classically the cel- lular ribosomal RNA (rRNA) by hybridization of a ...
273 16.4 Biological Methane Consumption Biological CH 4 oxidation is carried out by methanotrophs which are estimated to consume ...
274 for carbon fixation and their phospholipid fatty acid (PLFA) composition is generally dominated by saturated and monosaturat ...
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