Soil properties and metal accumulation by earthworms in the Siena urban area (Italy)

Nannoni, Francesco; Rossi, Sara; Protano, Giuseppe

doi:10.1016/j.apsoil.2014.01.004

Cited by 67 publications

(53 citation statements)

References 48 publications

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“…In addition, earthworms very efficiently physiologically regulate body concentrations of essential elements until a certain threshold (Spurgeon and Hopkin, 1999) and many authors have reported lack of concentration increase after exposure of earthworms to Cu and Zn in soil (Nahmani et al, 2007b;Giska et al, 2014;Nannoni et al, 2014). Concentration increase of these essential elements in our study, therefore, was possibly a consequence of some disturbance in their homeostasis.…”

Section: Patterns Of Variability Of Metal/metalloid Concentrations Inmentioning

confidence: 52%

“…Many studies have reported that concentrations of metals (such as Cd, Cu, Fe, Pb, and Zn) in whole worms are directly related to availability of metals in soil (Morgan and Morgan, 1998;Suthar and Singh, 2009;Nannoni et al, 2014). The uptake of Cd and Pb in earthworms was even sometimes characterized by linear pattern, due to their commonly very slow or non-existent elimination (Giska et al, 2014).…”

Section: Patterns Of Variability Of Metal/metalloid Concentrations Inmentioning

confidence: 99%

“…Commonly, only few selected elements are monitored in the earthworms, such as Cd, Cu, Fe, Pb, and Zn (Carpené et al, 2006;Kamitani and Kaneko, 2007;Suthar and Singh, 2009;Li et al, 2010;Giska et al, 2014). Only seldom studies extend on larger number of elements (Nahmani et al, 2007b;Nahmani et al, 2009;Nannoni et al, 2014). In our study, 26 trace and macro elements were analysed, thus providing extensive database for future soil monitoring programmes.…”

Section: Introductionmentioning

confidence: 99%

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Indication of metal homeostasis disturbance in earthworm Eisenia fetida after exposure to semi-solid depot sludge

Babić

Dragun

Klobučar

et al. 2015

Science of The Total Environment

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Treated sewage sludge is commonly used in agriculture as fertilizer. It is, therefore, necessary to determine possible detrimental influences of sludge application on soil contamination and accumulation of contaminants in tissues of terrestrial animals, which in the long run could also have undesirable effects on humans. With that aim, the study was performed using earthworm Eisenia fetida as test organism and semi-solid depot sludge from wastewater treatment plant as exposure media. The concentrations of 26 metals/metalloids were determined in depot sludge, and their bioaccumulation was estimated in whole tissue of E. fetida, and for the first time in the soluble tissue fraction, which represents metal fraction available for metabolic requirements and toxic effects.Obtained results have revealed acceptable levels of several elements (Cd, Cr, Cu, Ni, Pb, Zn) in depot sludge, when compared to currently valid regulations, and only moderate accumulation of some elements (e.g. As, Ba, Cd, Co, Fe, Tl, V, and Zn) in earthworms, as a consequence of exposure to depot sludge. However, concentration increase after exposure to depot sludge was observed in E. fetida for several elements (Cd, Mo, and Zn), which were present in lower concentrations in the exposure mixtures than in soil. Contrary, concentration decrease was observed for Cs, Mn, and Rb, although they were present in higher concentrations in depot sludge than in soil. It was an indication of disturbance in metal homeostasis in earthworms, possibly caused by exposure to complex mixture of contaminants present in depot sludge. The cumulative effect of exposure to a number of various contaminants (inorganic, organic, microbiological and pharmaceutical), even if each of them was not present in very high concentrations, could have caused distress in earthworms exposed to depot sludge.

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Section: Patterns Of Variability Of Metal/metalloid Concentrations Inmentioning

confidence: 52%

Section: Patterns Of Variability Of Metal/metalloid Concentrations Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Indication of metal homeostasis disturbance in earthworm Eisenia fetida after exposure to semi-solid depot sludge

Babić

Dragun

Klobučar

et al. 2015

Science of The Total Environment

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“…However, leachate metal concentrations were not measured. Increased stabilization of metals in egesta is another possibility, particularly for metals Ca, Mg, Pb, and Zn and other metals potentially stabilized as carbonates by the calciferous gland of L. rubellus (Sizmur and Hodson 2009;Nannoni et al 2014). However, an increase in stable metal concentrations was not observed and may not have been detectable due to the relative difference in stable and exchangeable concentrations.…”

Section: Forest Floor Stable and Exchangeable Metal Concentrationsmentioning

confidence: 56%

“…BAF values >1.0 suggest that the organism is bioaccumulating the metal, while a value <1.0 indicates that the earthworm is actively excreting the metal from its tissue (cf. Neuhauser et al 1995;Morgan and Morgan 1999;Nannoni et al 2014).…”

Section: Forest Floor Decomposition Experimentsmentioning

confidence: 98%

Forest floor decomposition, metal exchangeability, and metal bioaccumulation by exotic earthworms: Amynthas agrestis and Lumbricus rubellus

Richardson

Görres

Friedland

2016

Environ Sci Pollut Res

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Earthworms have the potential to reduce the retention of pollutant and plant essential metals in the forest floor (organic horizons) by decomposing organic matter and increasing exchangeability of metals. We conducted a laboratory experiment to investigate the effects of two exotic earthworms, Amynthas agrestis and Lumbricus rubellus, on forest floor decomposition, metal exchangeability, and metal bioaccumulation. Eighty-one pots containing homogenized forest floor material were incubated for 20, 40, or 80 days under three treatments: no earthworms, A. agrestis added, or L. rubellus added. For earthworm treatments, A. agrestis and L. rubellus were stocked at densities observed in previous field studies. Pots containing either A. agrestis or L. rubellus had lost more forest floor mass than the control plots after 40 and 80 days of incubation. Forest floor pots containing A. agrestis had significantly lower % C (16 ± 1.5 %) than control pots (21 ± 1.2 %) after 80 days. However, L. rubellus consumed more forest floor and C mass than A. agrestis, when evaluated on a per earthworm biomass basis. Exchangeable (0.1 M KCl + 0.01 M AcOH extractable) and stable (15 M HNO3+ 10 M HCl extractable) concentrations of Al, Ca, Cd, Cu, Mg, Mn, Pb, and Zn in forest floor material were measured. Stable concentrations and % exchangeable metals in forest floor material were similar among treatments. Although exchangeable metal concentrations varied significantly for most metals among treatments (except Mg and Zn), we conclude that earthworms did not increase or decrease the exchangeability of metals. However, earthworms bioaccumulated Cu, Cd, Zn, and Mg and had potentially hazardous tissue concentrations of Al and Pb. This was best illustrated by calculating bioaccumulation factors using exchangeable concentrations rather than total concentrations. Future research is needed to understand the effect of earthworms on metals in other soil types.

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Soil Contamination and Bioaccumulation of Heavy Metals by a Tropical Earthworm Species (Alma nilotica) at Informal E‐Waste Recycling Sites in Douala, Cameroon

Nfor

Fai

Tamungang

et al. 2022

Enviro Toxic and Chemistry

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Soil contamination at electronic waste (e‐waste) recycling sites is pervasive, though many locations have yet to be studied. While such contamination can present risks to soil organisms, little is known on the risks to native species. The objective of the present study was to assess soil contamination by heavy metals at e‐waste recycling sites, and the potential of Alma nilotica, a native earthworm species, to bioaccumulate these metals. Soil samples collected from eight informal e‐waste recycling sites and two non‐e‐waste sites in Douala, Cameroon, were analyzed for metal content. Metal concentrations in earthworm juveniles exposed to the soils for 21 days followed by a 14‐day post‐exposure period were measured weekly. Mean soil metal concentrations at e‐waste sites ranked as Cu > Pb > Zn > Hg > Ni > As > Cd > Co > Cr. Based on contamination factors, soil contamination ranged from “moderate” (Cr), through “considerable” (Co and Cd), to “very high” for the rest of the metals. Based on the modified degree of contamination and risk index, all e‐waste sites had “ultra‐high” contamination with Ni, Pb, and Zn posing very high ecological risks and Bonaberi being the most contaminated site. There was a positive correlation between soil metal concentrations and metal accumulation (retention) by eathworms, but Hg and Co had the highest bioaccumulation factors (BAFs) despite having low soil concentrations. These results document that e‐waste sites in Douala are contaminated with metals and that native earthworm species can bioaccumulate the studied metals at levels that could account for the toxic effects earlier recorded. With e‐waste recycling growing worldwide, there is a need for more data, especially from understudied locations. Environ Toxicol Chem 2022;41:356–368. © 2021 SETAC

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Soil properties and metal accumulation by earthworms in the Siena urban area (Italy)

Cited by 67 publications

References 48 publications

Indication of metal homeostasis disturbance in earthworm Eisenia fetida after exposure to semi-solid depot sludge

Indication of metal homeostasis disturbance in earthworm Eisenia fetida after exposure to semi-solid depot sludge

Forest floor decomposition, metal exchangeability, and metal bioaccumulation by exotic earthworms: Amynthas agrestis and Lumbricus rubellus

Soil Contamination and Bioaccumulation of Heavy Metals by a Tropical Earthworm Species (Alma nilotica) at Informal E‐Waste Recycling Sites in Douala, Cameroon

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