Copper and zinc isotope systematics in different bivalve mollusk species from the French coastline: Implications for biomonitoring - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Marine Pollution Bulletin Année : 2024

Copper and zinc isotope systematics in different bivalve mollusk species from the French coastline: Implications for biomonitoring

Résumé

Zinc (Zn) and copper (Cu) stable isotopic compositions have been analyzed in various species of bivalve mollusks worldwide, but no comprehensive systematic interspecies comparison exists. Thus, we assessed isotope differences between species harvested in emblematic French coastal ecosystems to unveil biologically driven Cu and Zn isotope fractionation patterns. Inter-species isotopic variability of Cu is larger than Zn, with organisms that regulate internal concentrations displaying preferential bioaccumulation of heavy isotopes. The degree of internal isotope fractionation decreases from mussels > clams > oysters, affecting Cu more than Zn. The less pronounced Zn inter-specie variability helps preserve source information more reliably. Spatial analysis of a single oyster species denotes thus an important isotope variability of environmental Zn sources, including natural, anthropogenic and dietary components. Overall, results highlight the importance of considering systematic offset in Cu and Zn isotope values when comparing data from different bivalve species.
Fichier non déposé

Dates et versions

hal-04540153 , version 1 (10-04-2024)

Identifiants

Citer

João Barreira, Daniel Ferreira Araujo, Wilson Machado, Emmanuel Ponzevera. Copper and zinc isotope systematics in different bivalve mollusk species from the French coastline: Implications for biomonitoring. Marine Pollution Bulletin, 2024, 201, 116177 (7p.). ⟨10.1016/j.marpolbul.2024.116177⟩. ⟨hal-04540153⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More