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Meta-analysis of heavy metal effects on soil enzyme activities

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dc.contributor.author Aponte H.
dc.contributor.author Meli P.
dc.contributor.author Butler B.
dc.contributor.author Paolini J.
dc.contributor.author Matus F.
dc.contributor.author Merino C.
dc.contributor.author Cornejo P.
dc.contributor.author Kuzyakov Y.
dc.date.accessioned 2021-02-25T20:33:27Z
dc.date.available 2021-02-25T20:33:27Z
dc.date.issued 2020
dc.identifier.issn 0048-9697
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/161721
dc.description.abstract © 2020 Elsevier B.V. Enzyme activities (EAs) respond to contamination in several ways depending on the chemical form and content of heavy metals and metalloids (HMs) and their interactions with various soil properties. A systematic and mechanistic understanding of EA responses to HM contamination in soil is necessary for predicting the consequences for nutrient availability and the cycling of carbon (C), nitrogen (N), phosphorus (P) and sulphur (S). In this study, a meta-analysis based on 671 observations found the activities of seven enzymes to decrease in response to soil contamination with Pb, Zn, Cd, Cu and As. HM contamination linearly reduced the activities of all enzymes in the following order: arylsulfatase > dehydrogenase > β-glucosidase > urease > acid phosphatase > alkaline phosphatase > catalase. The activities of two endoenzymes: arylsulfatase (partly as exoenzyme) and dehydrogenase were reduced by 72% and 64%, respectively. These reductions were two times greater than of exoenzymes: β-glucosidase, urease, acid phosphatase, alkaline phosphatase and catalase (partly endoenzyme). This reflects the much stronger impact of HMs on living microorganisms and their endoenzymes than on extracellular enzymes stabilized on clay minerals and organic matter. Increasing clay content weakened the negative effects of HM contamination on EAs. All negative effects of HMs on EAs decreased with soil depth because HMs remain mainly in the topsoil. EAs involved in the cycling of C and S were more affected by HMs than the enzymes associated with the cycling of N and P. Consequently, HM contamination may alter the stoichiometry of C, N, P and S released by enzymatic decomposition of organic compounds that consequently affect microbial community structure and activity.
dc.relation.ispartofseries Science of the Total Environment
dc.subject Biogeochemical cycles
dc.subject Metal(loid)s
dc.subject Microbial activity
dc.subject Soil pollution
dc.subject Toxic elements
dc.title Meta-analysis of heavy metal effects on soil enzyme activities
dc.type Article
dc.relation.ispartofseries-volume 737
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00489697-2020-737-SID85085737623


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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