Trace element variations in mussels' shells from continent to sea: The St. Lawrence system, Canada

TitleTrace element variations in mussels' shells from continent to sea: The St. Lawrence system, Canada
Publication TypeJournal Article
Year of Publication2024
AuthorsGuillot, A, Barrat, J-A, Olivier, F, Tremblay, R, Saint-Louis, R, Rouget, M-L, Ben Salem, D
JournalMarine Pollution Bulletin
Volume199
Pagination116034
Date PublishedJan-02-2024
ISSN0025326X
KeywordsRare earth elements Trace elements Estuary Bivalve Shell Environmental proxy Pollution
Abstract

Rare Earth Elements (REE) and several trace elements abundances in mussel's shells collected along the St. Lawrence River, the Estuary, and the Gulf of St. Lawrence (EGSL) reveal coherent chemical variations, with a sharp contrast between freshwater and seawater bivalves. In freshwater mussel's shells, Rare Earth Elements and Y (REY) patterns are rather flat. Their Mn and Ba concentrations are higher than those of EGSL mussel shells, which are much richer in Sr. Shale-normalized REY abundances in mussel's shells from the EGSL show positive anomalies in La and Y and well-marked negative anomalies in Ce, reflecting those of seawater. Prince Edward Island shells show light REE depletion relative to PAAS, positive La and Y anomalies, and negative Ce anomalies. Our data confirm the lack of detectable Gd pollution in the St. Lawrence River and in the EGSL, as well as Pb pollution at the mouth of the Saguenay Fjord and near Rimouski.

URLhttps://linkinghub.elsevier.com/retrieve/pii/S0025326X24000110
DOI10.1016/j.marpolbul.2024.116034
Short TitleMarine Pollution Bulletin
Catégorie HCERES
ACL - Peer-reviewed articles
Publication coopération et recherche SUD
Non