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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science Master Journal List / Article in Clarivate Analytics Web of Science Master Journal List (S2)
Field of Science: Agronomija / Agronomy (A001)
Author(s): Vaisvalavičius, Rimantas;Motuzas, Algirdas;Prosyčevas, Igoris;Levinskaitė, L;Zakarauskaitė, Danguolė;Grigaliūnienė, Kristina;Butkus, Virginijus
Title: Effect of heavy metals on microbial communities and enzymatic activity in soil column experiment
Is part of: Archives of Agronomy and Soil Science. Oxon : Taylor & Francis., Vol. 52, N 2 (2006)
Extent: p. 161-169
Date: 2006
Keywords: Soil colum;Lead;Copper;Zinc accumulation;Microorganisms;Soil enzymatic activity
Abstract: The experiment of model soil columns was performed in order to assess the functional diversity changes of soil microbial communities and enzymatic activity under the conditions of critical heavy metals (Pb, Zn and Cu) accumulation. The extremely high concentrations of contaminants were detected in the upper 0 – 0.1 m soil layer wherein the average total content of lead, copper and zinc reached up to 839, 773 and 844 mg kg-1 respectively. Such a high contamination level reduced counts of all investigated microbial groups and significantly lowered enzymes activity when compared to respective uncontaminated soil estimated. In particular high susceptibility of actinomycetes, oligonitrophic and mineral N assimilating bacteria suggests about low adaptable possibilities of these microorganisms while fungi and spore-forming bacteria seemed possessing much more effective defensive mechanisms leading to a higher survival under stress environmental conditions. The evident decrease of soil biological activity was found to be in this descending order: Dehydrogenase (95 – 98%) ? urease (65 – 97%) ? saccharase (57 – 77%) ? soil respiration (38 – 65%) as compared with natural soil
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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