Effects of a copper smelter on a grassland community in the Puchuncavı́ Valley, Chile

Ginocchio, Rosanna

doi:10.1016/s0045-6535(99)00385-9

Cited by 104 publications

(77 citation statements)

References 30 publications

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“…Environmental problems associated with copper mining in Central Chile are widely known, particularly in relation to the historical contamination of agricultural soils with metals, such as Cu, Zn, Pb, and Cd, and metalloids (As) (De Gregori et al, 2003;Ginocchio, 2000;González et al, 1984). It is well known that soil contamination with metals diminishes its quality and presents a risk for Thresholds of copper toxicity to lettuce soil functioning (Adriano, 2001).…”

Section: Introductionmentioning

confidence: 99%

Thresholds of copper toxicity to lettuce in field-collected agricultural soils exposed to copper mining activities in Chile

Verdejo

Ginocchio

Sauvé

et al. 2016

J. Soil Sci. Plant Nutr.

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Several previous studies highlighted the importance of using field-collected soils instead of artificially spiked contaminated soils for phytotoxicity tests. However, the use of field-collected soils presents several difficulties for interpretation of results, due to presence of various contaminants in the soil and unavoidable differences in the physicochemical properties of the tested soils. The objective of this study was to estimate thresholds of copper phytotoxicity in topsoils of 27 agricultural areas historically contaminated by mining activities in Chile. We performed standard emergence and early growth (21 days) tests (OECD 208 and ISO 11269-2) with lettuce. The response of lettuce was best explained by Cu toxicity and P deficiency. Growth of lettuce was related to soil total Cu concentration and Olsen-P and was not affected by soluble Cu (extractable by 0.1 M KNO 3 ) or Cu 2+ free ion activity of the soil solution. Thus, lettuce has a limited applicability for metal toxicity assessment in metalcontaminated soils, due to sensitivity of its response to P deficiency. However, it was possible to determine toxic thresholds for shoot concentrations of Cu in lettuce for responses of shoot and root length, suggesting that shoot concentrations of Cu in lettuce can be useful as indicators of Cu toxicity even in soils with a wide range of nutrient concentrations.

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Section: Introductionmentioning

confidence: 99%

Thresholds of copper toxicity to lettuce in field-collected agricultural soils exposed to copper mining activities in Chile

Verdejo

Ginocchio

Sauvé

et al. 2016

J. Soil Sci. Plant Nutr.

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“…En efecto, Ginocchio (2000) indica que el nitrógeno presente en el suelo explica un 13% de la variación en la abundancia de las comunidades vegetales evaluadas a lo largo de un transecto de 5,5 km hacia el SSE desde el complejo industrial. Mientras que el pH del suelo explicaría un 10% de la variación en la abundancia y el Cu extractable sólo un 7%.…”

Section: Tolerancia Al Cobre De Las Poblaciones De Oenothera Picensisunclassified

“…Actualmente, en los sitios aledaños al complejo industrial, los suelos son ácidos, están severamente erosionados y contienen altas concentraciones de metales (cobre, zinc, plomo y cadmio) y metaloides (arsénico) (González & Berqvist 1986a, González & Ite 1992. Estos sitios presentan baja riqueza de especies, cobertura vegetal evidentemente disminuida y pobre banco de semillas, en comparación con sitios no contaminados del Valle de Puchuncaví (Ginocchio 2000).…”

Section: Introductionunclassified

Evaluación de la tolerancia al cobre de dos poblaciones de Oenothera picensis Phil. subsp. picensis (Onagraceae)

González

Neaman

2015

Gayana Bot.

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“…; Environmental Resources Management, 1993) resulted in strong acid rain deposition with acute damage to local vegetation and soil acidification to a pH of 3.5 -4.7 (Ginocchio, 2000). Furthermore, atmospheric emission and fallout of trace element-rich particulate matter (mean of 12 ton d -1 ; Environmental Resources Management, 1993) resulted on metal (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, atmospheric emission and fallout of trace element-rich particulate matter (mean of 12 ton d -1 ; Environmental Resources Management, 1993) resulted on metal (i.e. Cu, Zn, Pb, Cd) and arsenic (As) enrichment of soils and strong reduction on plant richness and abundance (Ginocchio, 2000;González et al, 2008;Neaman et al, 2009). A consequent impoverishment of soils occurred after the years due to wind and rain erosion, particularly in terms of both organic matter and macronutrient contents (Ginocchio, 2000).…”

Section: Introductionmentioning

confidence: 99%

Efficacy of fresh and air-dried biosolids as amendments for remediation of acidic and metal-polluted soils: A short-term laboratory assay

Ginocchio

Cárcamo

Bustamante³

et al. 2013

J. Soil Sci. Plant Nutr.

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Biosolids have been used as amendments on mine degraded soils for in situ immobilization of metals, neutralization, and improvement of nutritional, microbiological, and physical characteristics to reestablish a self-sustaining plant community. Fresh and air-dried biosolids have been used but dried ones are preferred as they are cheaper to transport, contain less pathogens and are much easier to handle. The same efficacy has been assumed for both biosolids. The study evaluated the effects of fresh and air-dried biosolids on physical, chemical and microbiological characteristics of an acidic and metal/As-rich soil of the Puchuncaví valley, central Chile, and on plant yield under laboratory conditions. Two doses of each biosolids were used (50 and 100 ton ha -1 , dry weight). Fresh and air-dried biosolids similarly increased organic matter, total nitrogen (N) and available N and phosphorous contents of study soil. However, air-dried biosolids exhibited lower field capacity and higher wilting point, salinity, higher levels of dissolved organic carbon, concentrations of total dissolved copper and zinc, and lower activity of free Cu 2+ ions in pore water. Basal respiration was significantly increased by incorporation of biosolids into soils, irrespective of being fresh or air-dried ones. In terms of aerial plant productivity, fresh biosolids and low doses of air-dried biosolids significantly increased this characteristic. However, high doses of air-dried biosolids limited aerial biomass and root cover, probably due to soil salinity and water stress. Therefore, fresh biosolids are suggested for remediation of this mine degraded soils.

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Effects of a copper smelter on a grassland community in the Puchuncavı́ Valley, Chile

Cited by 104 publications

References 30 publications

Thresholds of copper toxicity to lettuce in field-collected agricultural soils exposed to copper mining activities in Chile

Thresholds of copper toxicity to lettuce in field-collected agricultural soils exposed to copper mining activities in Chile

Evaluación de la tolerancia al cobre de dos poblaciones de Oenothera picensis Phil. subsp. picensis (Onagraceae)

Efficacy of fresh and air-dried biosolids as amendments for remediation of acidic and metal-polluted soils: A short-term laboratory assay

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