Abstract
Microbial growth rate was estimated by multiplying15N immobilization by an estimated microbial C:N ratio. This growth rate, in combination with measurements of respiration, was used to calculate growth efficiency. Growth rates and efficiencies were calculated for grassland and cultivated soils of three textures. Calculated efficiencies (Yc), assuming a microbial C: N ratio of 7, ranged from 32 to 54. Cultivated soils tended to have higher Yc values than did grassland soils. This calculation depends on several hard-to-verify assumptions, but yields numbers that should be of great interest in comparative studies.
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References
Anderson JPE & Domsch KH (1973) Quantification of bacterial and fungal contributions to soil respiration. Archives of Microbiology 93: 113–127
Brookes PC, Heijnen CE, McGarth SP and Vance ED (1986) Soil microbial biomass estimates in soils contaminated with metals. Soil Biology and Biochemistry 18: 383–389
Chapman SJ & Gray TRG (1986) Importance of cryptic growth, yield factors and maintenance energy in models of microbial growth in soil. Soil Biology and Biochemistry 18: 1–5
Fairbanks BC, Woods LE, Bryant RJ, Elliott ET, Cole CV & Coleman DC (1984) Limitations of ATP estimates of microbial biomass. Soil Biology and Biochemistry 16: 549–559
Holland EA & Coleman DC (1987) Crop residue placement effects on microbial communities and organic matter dynamics. Ecology 68: 425–433
Hunt HW (1977) A simulation model for decomposition in grasslands. Ecology 58: 469–483
Hunt HW & Parton WJ (1986) The role of modeling in research on microfloral and faunal interactions in natural and agroecosystems. In: Mitchell MJ & Nakas JP (Eds) Microfloral and Fauna1 Interactions in Natural and Agro-ecosystems (pp 443–494) Martinus Nijhoff/ Dr W. Junk Publishers, Boston
Jenkinson DS & Powlson DS (1976) The effects of biocidal treatments on metabolism in soil. V. A method for measuring soil biomass. Soil Biology and Biochemistry 8: 209–213
Kassim G, Martin JP & Haider K (1981) Incorporation of a wide variety of organic substrate carbons into soil biomass as estimated by the fumigation procedure. Soil Science Society of America Journal 45: 1106–1111
Kirkham D & Bartholomew WV (1954) Equations for following nutrient transformations in soil, utilizing tracer data. Soil Science Society Proceedings 18: 33–34
Payne WJ & Wiebe WJ (1978) Growth yield and efficiency in chemosynthetic microorganisms. Annual Review of Microbiology 32: 155–183
Schimel DS, Coleman DC & Horton KA (1985) Soil organic matter dynamics in paired rangeland and cropland toposequences in North Dakota. Geoderma 36: 201–214
Schimel DS (1986) Carbon and nitrogen turnover in adjacent grassland and cropland ecosystems. Biogeochemistry 2: 345–357
Shen SM, Pruden G & Jenkinson DS (1984) Mineralization and immobilization of nitrogen in fumigated soil and the measurement of microbial biomass nitrogen. Soil Biology and Biochemistry 16: 437–444
Van Veen JA, Ladd JN & Frissel MJ (1984) Modelling C and N turnover through the microbial biomass in soil. Plant and Soil 76: 257–274
Voroney RP & Paul EA (1984) Determination of Kc and KN, in situ for calibration of the chloroform fumigation-incubation method. Soil Biology and Biochemistry 16: 9–14
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Schimel, D.S. Calculation of microbial growth efficiency from15N immobilization. Biogeochemistry 6, 239–243 (1988). https://doi.org/10.1007/BF02182998
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DOI: https://doi.org/10.1007/BF02182998