Does a decade of soil organic fertilization promote copper and zinc bioavailability to an epi-endogeic earthworm?

Laurent Céline, Bravin Matthieu, Blanchart Eric, Crouzet Olivier, Pelosi Céline, Lamy Isabelle. 2023. Does a decade of soil organic fertilization promote copper and zinc bioavailability to an epi-endogeic earthworm?. Environmental Science and Pollution Research, 30 : 17472-17486.

Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/TU9DRY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : While long-term organic fertilizer (OF) applications tend to decrease copper (Cu) and zinc (Zn) availability in agricultural soils, earthworm bioturbation has been reported to have the opposite effect. Thus, the consequences of OF amendments in earthworm-inhabited soils on Cu and Zn bioavailability to earthworms are still under debate. Here, we assessed the effect of a decade of agronomically realistic OF applications on Cu and Zn availability in earthworm-inhabited soils and the consequences on Cu and Zn bioavailability to earthworms. An epi-endogeic species (Dichogaster saliens) was exposed in microcosms to three field-collected soils that had received either no, mineral, or organic fertilization for a decade. Dissolved organic matter (DOM) properties (i.e., concentration, aromaticity, and binding properties toward Cu), pH, and Cu and Zn availability (i.e., total concentration and free ionic activity) were determined in the solution of the soil containing earthworms. Cu and Zn bioavailability was assessed by measuring the net accumulation (ng) and concentration of Cu and Zn in earthworms (mg kg−1). Despite soil Cu and Zn contamination induced by a decade of OF applications, organic fertilization induced an increase in soil pH and DOM properties that drove the reduction of Cu and Zn availability in earthworm-inhabited soils, while bioturbation had little effect on soil pH, DOM properties, and Cu and Zn availability. Consistently, Cu and Zn bioavailability to earthworms did not increase with OF applications. From an ecotoxicological perspective, our results suggest that agronomically realistic applications of OF for a decade should not pose a risk to earthworms in terms of Cu and Zn net accumulation, but further studies have to be undertaken to understand consequent long-term toxicity after exposure.

Mots-clés Agrovoc : engrais organique, cuivre, zinc, composition chimique, sol, propriété physicochimique, ver de terre, accumulation

Mots-clés géographiques Agrovoc : La Réunion, France

Mots-clés complémentaires : Dichogaster saliens

Mots-clés libres : Bioaccumulation, Fauna, Metal, Pore water, Potentially toxic element, Wastes

Classification Agris : P02 - Pollution
P33 - Chimie et physique du sol
L74 - Troubles divers des animaux

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Commission

Auteurs et affiliations

• Laurent Céline, CIRAD-PERSYST-UPR Recyclage et risque (REU)
• Bravin Matthieu, CIRAD-PERSYST-UPR Recyclage et risque (FRA) ORCID: 0000-0002-1436-7837 - auteur correspondant
• Blanchart Eric, IRD (FRA)
• Crouzet Olivier, INRAE (FRA)
• Pelosi Céline, INRAE (FRA)
• Lamy Isabelle, INRAE (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/602390/)

Métriques

[ Page générée et mise en cache le 2024-01-29 ]