Fresh additions of heavy metals do not model long-term effects on microbial biomass and activity

Fresh additions of heavy metals do not model long-term effects on microbial biomass and activity

Previous work has reported adverse effects of long-term exposures of heavy metals (e.g. Cu, Ni, Cd and Zn) on soil microbial biomass (up to 50% decrease) and microbial activity at metal concentrations around current European Union permitted limits. Our aim was to see if we could model such changes i...

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Bibliographic Details
Published in:Soil biology & biochemistry Vol. 34; no. 1; pp. 121 - 124
Main Authors: Renella, G, Chaudri, A.M, Brookes, P.C
Format: Journal Article
Language:English
Published: Elsevier Ltd 2002
Subjects:
Heavy metals
Microbial biomass
Respiration
Specific respiration
Respiration
Microbial biomass
Heavy metals
Specific respiration
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Summary:Previous work has reported adverse effects of long-term exposures of heavy metals (e.g. Cu, Ni, Cd and Zn) on soil microbial biomass (up to 50% decrease) and microbial activity at metal concentrations around current European Union permitted limits. Our aim was to see if we could model such changes in short-term (up to 50 days) laboratory incubations where soils were given a single pulse of metal salts. Such additions, however, caused only small changes in the measured variables. It was concluded that such short-term incubations are a poor model of changes in microbial biomass or activity due to chronic exposure to metals.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0038-0717
1879-3428
DOI:10.1016/S0038-0717(01)00150-X