Determination of EC₅₀ values for Cu, Zn, and Cr on microorganisms activity in a Mediterranean sandy soil

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(Centre de Recerca Ecològica i d'Aplicacions Forestals)
Domene, Xavier

(Centre de Recerca Ecològica i d'Aplicacions Forestals)
Ortiz Perpiñà, Oriol (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Marks, Evan A. N. (Universidad de Burgos. Departamento de Química)
Alcañiz, Josep M.

(Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2018
Resum:	Ecotoxicity of three potentially toxic metals (PTM) (Cu, Zn, and Cr) in a slightly acidic sandy soil is tested using the soil respiration test (OECD-217) in order to determine EC₅₀ values for the carbon transformation activity of microorganisms. Addition of an organic amendment of Populus leaves is also crossed with metal spiking in order to investigate possible interaction with metal toxicity. Soil respiration is measured at day 1 and 28 after the soil spiking with the PTM to assess short-term effects on soil microbial activity. Of the three metals tested, Cu shows the highest toxicity at the longest exposure times (day 28) and Zn shows a strong inhibitory effect in the short-term (day 1), even though later toxicity diminish significantly. Cr is the least toxic studied PTM. Organic amendment outweighs any adverse effects of these metals, increasing soil respiration, even in the treatments with high doses of metals.
Ajuts:	Ministerio de Ciencia y Tecnología AGL2002-03297
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Effective concentrations ; Metal toxicity ; Toxic metals ; Soil microorganisms ; Soil organic matter
Publicat a:	CLEAN : soil, air, water, Vol. 47, issue 12 (December 2019) , art. 1700617, ISSN 1863-0650

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Registre creat el 2018-02-15, darrera modificació el 2023-01-11