Application of Zn Isotope Compositions in Oysters to Monitor and Quantify Anthropogenic Zn Bioaccumulation in Marine Environments over Four Decades: A “Mussel Watch Program” Upgrade

Type Article
Date 2021-04
Language English
Author(s) Ferreira Araujo Daniel1, Ponzevera Emmanuel1, Weiss Dominik Jakob2, 3, Knoery JoelORCID1, Briant NicolasORCID1, Yepez Santiago4, Bruzac Sandrine1, Sireau Teddy1, Brach-Papa Christophe5
Affiliation(s) 1 : Laboratoire de Biogéochimie des Contaminants Métalliques, IFREMER, Centre Atlantique, F44311 Nantes, Cedex 3, France
2 : Department of Earth Science and Engineering, Imperial College London, London SW7 2BP, United Kingdom
3 : Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08540, United States
4 : Department of Forest Management and Environment, Faculty of Forestry, University of Concepcion, Calle Victoria, 500 Concepción, Bio-Bio, Chile
5 : Laboratoire Environnement Ressources Provence-Azur-Corse, Ifremer, Centre Méditerranée, Zone Portuaire de Brégaillon, CS20 330, 83507 La Seyne-sur-Mer Cedex, France
Source Acs Environmental Science And Technology Water (2690-0637) (American Chemical Society (ACS)), 2021-04 , Vol. 1 , N. 4 , P. 1035-1046
DOI 10.1021/acsestwater.1c00010
WOS© Times Cited 9
Keyword(s) Loire estuary, Bay of Biscay, nontraditional isotopes, metal contamination, biomonitoring, marine pollution, bivalve mollusk, Crassostrea gigas
Abstract

The application of zinc (Zn) isotope compositions in bivalve organisms to quantify anthropogenic Zn bioaccumulation in marine biota is of great interest to environmental marine management programs such as the “Mussel Watch Program”. Field studies, however, are urgently needed to test its practical value. To this end, we investigated Zn isotope variations in the oyster Crassostrea gigas collected over four decades near the Loire estuary (France), where previous geochemical studies provided evidence for a regionally uniform but temporally variable metal contamination. We show that the Zn temporal isotope profile of oysters matches that of the sedimentary records with an isotope offset of approximately +0.5–0.7‰, tentatively attributed to compromised estuarine processes and trophic transfer. A Zn isotope model for quantifying anthropogenic Zn bioaccumulation suggests an overall decrease in anthropogenic estuarine Zn levels over the past 40 years. This first successful application of Zn isotope ratios in a bivalve species to quantify anthropogenic Zn bioaccumulation confirms their utility for supporting environmental management strategies in marine biomonitoring programs.

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Ferreira Araujo Daniel, Ponzevera Emmanuel, Weiss Dominik Jakob, Knoery Joel, Briant Nicolas, Yepez Santiago, Bruzac Sandrine, Sireau Teddy, Brach-Papa Christophe (2021). Application of Zn Isotope Compositions in Oysters to Monitor and Quantify Anthropogenic Zn Bioaccumulation in Marine Environments over Four Decades: A “Mussel Watch Program” Upgrade. Acs Environmental Science And Technology Water, 1(4), 1035-1046. Publisher's official version : https://doi.org/10.1021/acsestwater.1c00010 , Open Access version : https://archimer.ifremer.fr/doc/00682/79374/