Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile

The Aconcagua River basin (Central Chile) is one of the most important agricultural areas in the country. However, several copper (Cu) mining operations are located in the basin. The objective of the study was to determine Cu toxicity for the earthworm Eisenia fetida (Savigny 1826) in the agricultur...

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Autores principales:	Ávila,Gonzalo, Gaete,Hernán, Sauvé,Sébastien, Neaman,Alexander
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2009
Materias:	Aconcagua River ecological risk assessment Cu mining trace elements
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200015
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spelling	oai:scielo:S0718-583920090002000152018-10-01Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central ChileÁvila,GonzaloGaete,HernánSauvé,SébastienNeaman,Alexander Aconcagua River ecological risk assessment Cu mining trace elements The Aconcagua River basin (Central Chile) is one of the most important agricultural areas in the country. However, several copper (Cu) mining operations are located in the basin. The objective of the study was to determine Cu toxicity for the earthworm Eisenia fetida (Savigny 1826) in the agricultural soils of the basin. We determined the production of cocoons and juveniles of earthworms in the studied soils. The soils differed in the concentrations of organic matter (OM, range 2-6%), pH (range 7.3-8.3), texture (from loamy sand to clay loam), and total Cu concentrations (range 230-960 mg kg-1). Concentrations of Cu and OM in the soils were the variables that determined the earthworms’ biological response. In contrast, pH and texture did not affect this response. Cocoon and juvenile production decreased considerably in soils with elevated Cu concentrations (>500 mg kg-1), regardless of OM concentrations. Cocoon production decreased in the soils with Cu concentrations below 500 mg kg-1 when OM concentrations were below 3.5%. In contrast, cocoon production did not vary when OM concentrations were above 3.5%. The same effect of OM was observed on juvenile production. In this case, the threshold for OM concentration was 2.5%. It was concluded that it is important to consider OM concentrations in order to predict the biological response of earthworms in these soils.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.69 n.2 20092009-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200015en10.4067/S0718-58392009000200015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aconcagua River ecological risk assessment Cu mining trace elements
spellingShingle	Aconcagua River ecological risk assessment Cu mining trace elements Ávila,Gonzalo Gaete,Hernán Sauvé,Sébastien Neaman,Alexander Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile
description	The Aconcagua River basin (Central Chile) is one of the most important agricultural areas in the country. However, several copper (Cu) mining operations are located in the basin. The objective of the study was to determine Cu toxicity for the earthworm Eisenia fetida (Savigny 1826) in the agricultural soils of the basin. We determined the production of cocoons and juveniles of earthworms in the studied soils. The soils differed in the concentrations of organic matter (OM, range 2-6%), pH (range 7.3-8.3), texture (from loamy sand to clay loam), and total Cu concentrations (range 230-960 mg kg-1). Concentrations of Cu and OM in the soils were the variables that determined the earthworms’ biological response. In contrast, pH and texture did not affect this response. Cocoon and juvenile production decreased considerably in soils with elevated Cu concentrations (>500 mg kg-1), regardless of OM concentrations. Cocoon production decreased in the soils with Cu concentrations below 500 mg kg-1 when OM concentrations were below 3.5%. In contrast, cocoon production did not vary when OM concentrations were above 3.5%. The same effect of OM was observed on juvenile production. In this case, the threshold for OM concentration was 2.5%. It was concluded that it is important to consider OM concentrations in order to predict the biological response of earthworms in these soils.
author	Ávila,Gonzalo Gaete,Hernán Sauvé,Sébastien Neaman,Alexander
author_facet	Ávila,Gonzalo Gaete,Hernán Sauvé,Sébastien Neaman,Alexander
author_sort	Ávila,Gonzalo
title	Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile
title_short	Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile
title_full	Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile
title_fullStr	Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile
title_full_unstemmed	Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile
title_sort	organic matter reduces copper toxicity for the earthworm eisenia fetida in soils from mining areas in central chile
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200015
work_keys_str_mv	AT avilagonzalo organicmatterreducescoppertoxicityfortheearthwormeiseniafetidainsoilsfromminingareasincentralchile AT gaetehernan organicmatterreducescoppertoxicityfortheearthwormeiseniafetidainsoilsfromminingareasincentralchile AT sauvesebastien organicmatterreducescoppertoxicityfortheearthwormeiseniafetidainsoilsfromminingareasincentralchile AT neamanalexander organicmatterreducescoppertoxicityfortheearthwormeiseniafetidainsoilsfromminingareasincentralchile
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Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile

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