Ratios of microbial biomass estimates to evaluate microbial physiology in soil

被引:0
作者
Oliver Dilly
机构
[1] Universität Kiel,Ökologie
[2] Brandenburgische Technische Universität,Zentrum
来源
Biology and Fertility of Soils | 2006年 / 42卷
关键词
ATP content; Fumigation–extraction; Gradient; Indicator; Microbial physiology; Pollution; Soil microbial biomass; Substrate-induced respiration;
D O I
暂无
中图分类号
学科分类号
摘要
Soil microbial biomass data derived from fumigation–extraction (FE), substrate-induced respiration (SIR) and ATP estimations differed significantly and were significantly correlated, which agrees to previous studies. In a second step, the SIR/FE, ATP/FE and SIR/ATP ratios were calculated to evaluate the glucose-responsive and active component of the microbial (active and resting) biomass and the glucose-responsive component of the active microbiota. Soils were sampled along gradients within and between associated ecosystems in Northern Germany, Denmark and along a gradient of heavy metal pollution in Finland. The ratios indicated that the active portion and glucose-responsive component decreased with proceeding litter decomposition, higher degree of sustainable land management practices and higher degree of heavy metal contamination.
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页码:241 / 246
页数:5
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