Results 181 to 190 of about 23,575 (220)
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International Biodeterioration & Biodegradation, 2013
Abstract This work focused on monitoring respiratory quotient, RQ (defined as a ratio of CO2 production to O2 uptake rates), microbial growth and residual hydrocarbon concentration during bioremediation experiments performed on laboratory soil microcosms.
Edvina Lamy +4 more
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Abstract This work focused on monitoring respiratory quotient, RQ (defined as a ratio of CO2 production to O2 uptake rates), microbial growth and residual hydrocarbon concentration during bioremediation experiments performed on laboratory soil microcosms.
Edvina Lamy +4 more
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Applied Soil Ecology, 2005
Abstract Monitoring soil quality by means of biological indices can be of help for the management and sustainability of soils that received sewage sludge application. The objective of this study was to evaluate the effect of long-term and continued application of sewage sludge rates on microbial biomass, basal respiration, metabolic quotient and ...
Silvana Aparecida Pavan Fernandes +2 more
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Abstract Monitoring soil quality by means of biological indices can be of help for the management and sustainability of soils that received sewage sludge application. The objective of this study was to evaluate the effect of long-term and continued application of sewage sludge rates on microbial biomass, basal respiration, metabolic quotient and ...
Silvana Aparecida Pavan Fernandes +2 more
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Soil Biology and Biochemistry, 1995
Abstract The microbial metabolic quotient (respiration-to-biomass ratio) or qCO2, conceptually based on Odum's theory of ecosystem succession, is increasingly being used as an index of ecosystem development (during which it supposedly declines) and disturbance (due to which it supposedly increases).
D.A. Wardle, A. Ghani
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Abstract The microbial metabolic quotient (respiration-to-biomass ratio) or qCO2, conceptually based on Odum's theory of ecosystem succession, is increasingly being used as an index of ecosystem development (during which it supposedly declines) and disturbance (due to which it supposedly increases).
D.A. Wardle, A. Ghani
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Soil Biology and Biochemistry, 2001
Abstract The microbial respiratory quotient (RQ), defined as the ratio of mol CO 2 evolution per mol O 2 uptake, was estimated in soils in northern and southern Germany under different land use with and without glucose addition in order to: (i) test the degree of corresponding data of the two procedures, and (ii) evaluate discrepancies with ...
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Abstract The microbial respiratory quotient (RQ), defined as the ratio of mol CO 2 evolution per mol O 2 uptake, was estimated in soils in northern and southern Germany under different land use with and without glucose addition in order to: (i) test the degree of corresponding data of the two procedures, and (ii) evaluate discrepancies with ...
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Biology and Fertility of Soils, 1999
We studied the long-term effects (12 years) of municipal refuse compost addition on the total organic carbon (TOC), the amount and activity of the microbial biomass (soil microbial biomass C, BC and metabolic quotient qCO2) and heavy metal bioavaiability in soils as compared to manuring with mineral fertilizers (NPK) and farmyard manure (FYM).
LEITA L. +6 more
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We studied the long-term effects (12 years) of municipal refuse compost addition on the total organic carbon (TOC), the amount and activity of the microbial biomass (soil microbial biomass C, BC and metabolic quotient qCO2) and heavy metal bioavaiability in soils as compared to manuring with mineral fertilizers (NPK) and farmyard manure (FYM).
LEITA L. +6 more
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Nature, 1968
THE moisture content of soil affects the oxygen supply of micro-organisms, and their metabolic activity1. Oxygen has low diffusibility in water, and at zero matric suction (saturation) oxygen concentration falls rapidly to zero2, causing anaerobic conditions to prevail.
A J, Rixon, B J, Bridge
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THE moisture content of soil affects the oxygen supply of micro-organisms, and their metabolic activity1. Oxygen has low diffusibility in water, and at zero matric suction (saturation) oxygen concentration falls rapidly to zero2, causing anaerobic conditions to prevail.
A J, Rixon, B J, Bridge
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Geoderma, 2003
Alternativelandusesystems, andespeciallyagroforestry,arecurrentlybeingpromotedintheThree Gorges area to enhance soil retention and improve soil quality. The soil microbial biomass (Cmic )i s intimately associated with the build up of organic matter (Corg).
Tingmei Yan +2 more
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Alternativelandusesystems, andespeciallyagroforestry,arecurrentlybeingpromotedintheThree Gorges area to enhance soil retention and improve soil quality. The soil microbial biomass (Cmic )i s intimately associated with the build up of organic matter (Corg).
Tingmei Yan +2 more
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Geoderma, 2006
Abstract The response of soil carbon availability and microbial utilization efficiency to varying vegetations and to increasing temperature emphasizes the need for further research in volcanic forest soils. We have studied responses of soil microbial biomass C (MBC) concentrations and metabolic quotients (qCO2, CO2-C / biomass-C) to vegetations and ...
Xingkai Xu +2 more
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Abstract The response of soil carbon availability and microbial utilization efficiency to varying vegetations and to increasing temperature emphasizes the need for further research in volcanic forest soils. We have studied responses of soil microbial biomass C (MBC) concentrations and metabolic quotients (qCO2, CO2-C / biomass-C) to vegetations and ...
Xingkai Xu +2 more
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Biology and Fertility of Soils, 1995
Variations in the microbial biomass and the in situ metabolic quotient (qCO2) due to climatic conditions were determined in a typical soil from the Argentine Rolling Pampa. Microbial C was evaluated by fumigation-incubation and qCO2 was calculated using soil respiration in the field.
Roberto Alvarez +2 more
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Variations in the microbial biomass and the in situ metabolic quotient (qCO2) due to climatic conditions were determined in a typical soil from the Argentine Rolling Pampa. Microbial C was evaluated by fumigation-incubation and qCO2 was calculated using soil respiration in the field.
Roberto Alvarez +2 more
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Soil Biology and Biochemistry, 1990
Metabolic quotients for CO2C (qCO2C) and microbial-C-loss (qD) were studied on soil microbial communities under long-term monoculture (M) or continuous crop rotations (CR). Under defined laboratory conditions the mean qCO2C (unit CO2C unit−1 Cmic h−1) of different microbial biomasses from 17 M systems amounted to 1.097 μg CO2qCO2CC as compared to ...
Traute-Heidi Anderson, K.H. Domsch
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Metabolic quotients for CO2C (qCO2C) and microbial-C-loss (qD) were studied on soil microbial communities under long-term monoculture (M) or continuous crop rotations (CR). Under defined laboratory conditions the mean qCO2C (unit CO2C unit−1 Cmic h−1) of different microbial biomasses from 17 M systems amounted to 1.097 μg CO2qCO2CC as compared to ...
Traute-Heidi Anderson, K.H. Domsch
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