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archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane

References in periodicals archive ?
Plants rich in CT have been shown to reduce rumen methanogenesis in sheep and cattle [37,38] probably due to both directly through an inhibition of the growth of methanogens and indirectly through a reduction in fiber digestion, which decreases H2 production [39].
When a hypolimnion remains anoxic, obligately anaerobic prokaryotic populations, including Archaeal methanogens, presumably increase, but a lake that never has an oxygenated hypolimnion due to salt-induced stratification likely produces more methane because conditions that favor methanogen growth are persistent.
Methanogens may increase in number when low levels of sulfates are present in coastal areas, as they are capable of using [H.
Pramanik P, Kim PJ (2012) Quantitative determination of 2-mercaptoethane sulphonate as biomarker for methanogens in soil by high performance liquid chromatography using UV detector.
The idea is that, given the extra nitrogen, methanogens sopping up excess hydrogen will form ammonia (composed of one nitrogen and three hydrogen atoms) instead of methane (one carbon and four hydrogens).
However, a by-product of the fermentation is the greenhouse gas, methane, which is produced by microbes called methanogens.
Rice Cluster I methanogens, an important group of Archaea producing greenhouse gas in soil.
Third, I will generate the first Paleogene records of terrestrial methane cycling using lipids derived from methanotrophs and methanogens, calibrated in modern settings and applied to Eocene lignites.
We have advanced that in the Niger Delta, a group of organisms known as methanogens are now playing major roles in bio-corrosion episodes We have also advanced that oil field microorganisms are getting more and more resistant to biocides used to control corrosion and there is need for alternative mitigation approaches.
In addition if some hydrogen-consuming bacteria like methanogens sulfate reducing bacteria and homoacetogens existed in microflora the hydrogen yield would be reduced because of their ability of using H2 to gain energy (Guo et al.
The probable mechanism was that Fe(III) bioreduction lowered the reduction potential of the system and methanogenesis became favorable and in turn, methanogenesis stimulated the growth of methanogens, which enhanced Fe(III) bioreduction [18].
Garlic (Allium sativum) also inhibits ruminal methanogens.
Some rumen ciliates have endosymbiotic methanogens.
Among the organisms targeted by GTI's qPCR testing are total bacteria, total archaea, sulfate-reducing bacteria, sulfate-reducing archaea, acid-producing bacteria (acetic and butyric acid producers), iron-oxidizing bacteria, denitrifying bacteria, and methanogens.
Cellulolytic microbes can break the cellulose into sugar monomers, which fermenting bacteria can use, giving off smaller organic acids, carbon dioxide, and hydrogen gas, which methanogens or sulfate reducers use for their carbon and energy.