Deep, subsurface microflora after excavation respiration and biomass and its potential role in degradation of fossil organic matter

0367392 - BC 2012 RIV CZ eng J - Journal Article
Frouz, Jan - Cajthaml, Tomáš - Kříbek, B. - Schaeffer, P. - Bartuška, Martin - Galertová, R. - Rojík, P. - Krištůfek, Václav
Deep, subsurface microflora after excavation respiration and biomass and its potential role in degradation of fossil organic matter.
Folia Microbiologica. Roč. 56, č. 5 (2011), s. 389-396. ISSN 0015-5632. E-ISSN 1874-9356
R&D Projects: GA ČR GA206/09/1642
Institutional research plan: CEZ:AV0Z60660521; CEZ:AV0Z50200510
Keywords : microflora * biomass * fossil organic matter
Subject RIV: EH - Ecology, Behaviour
Impact factor: 0.677, year: 2011

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.
Permanent Link: http://hdl.handle.net/11104/0202098