Deep, subsurface microflora after excavation respiration and biomass and its potential role in degradation of fossil organic matter
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Aerobiosis MeSH
- Bacteria metabolism MeSH
- Biomass MeSH
- Solid Phase Extraction MeSH
- Phospholipids analysis MeSH
- Glucose metabolism MeSH
- Fungi metabolism MeSH
- Clay MeSH
- Oxygen metabolism MeSH
- Fatty Acids analysis MeSH
- Microbial Consortia physiology MeSH
- Gas Chromatography-Mass Spectrometry MeSH
- Soil analysis MeSH
- Soil Microbiology * MeSH
- Aluminum Silicates analysis classification MeSH
- Fossils MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Phospholipids MeSH
- Glucose MeSH
- Clay MeSH
- Oxygen MeSH
- Fatty Acids MeSH
- Soil MeSH
- Aluminum Silicates MeSH
Three types of Miocene claystones (amorphous, lamellar, and transitional) were aseptically sampled from depths of 30 m and 150 m below the soil surface. Respiration of these sediments was measured under conditions that prevented inoculation by other microorganisms not indigenous to the claystones in situ. Microbial respiration was higher in lamellar than amorphous claystones and was not affected by sampling depth. During cultivation, microbial biomass (as indicated by PLFA) significantly increased. Microbial biomass after cultivation was significantly higher in sediments from 30 m than from 150 m depth. Both microbial respiration and biomass increased after glucose addition.
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