Integration of physical, geochemical and biological analyses as a strategy for coastal lagoon biomonitoring. (March 2021)

• Record Type: Journal Article
• Authors: Greggio, Nicolas; Capolupo, Marco; Donnini, Filippo; Birke, Manfred; Fabbri, Elena; Dinelli, Enrico
• Is Part Of: Marine pollution bulletin. Volume 164(2021)
• Publication Date: 2021-03
• Subjects: Coastal lagoon -- Sediment geochemistry -- Metal bioaccumulation -- Biomarkers -- Biomonitoring; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2021.112005
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: Coastal lagoons are complex environments threatened by natural and anthropogenic stressors. Here, we tested the effectiveness of combining physical, geochemical and chemical measurements with biomarker data obtained in field-exposed marine mussels ( Mytilus galloprovincialis ) as a biomonitoring strategy for a highly pressured lagoon (Pialassa Baiona, Ravenna, Italy). Data showed a spatial trend of sediment contamination by Hg, Pt, Au, Ag, Mo, Re, Cd, Pd and Zn. Local conditions of high water temperature/low conductivity were detected among selected sites. After a 30-day in situ exposure, Ag and Hg were the most bioaccumulated elements (10 and 5 folds, respectively) in mussels followed by Sb, Al, Ti and Fe. Decreased survival, lysosomal dysfunctions, increased metallothionein content and peroxisome proliferation were observed in mussels in relation to metal spatial distribution and physico-chemical fluctuations. Overall, this study provides a further confirmation of the role of biomonitoring to reliably assess the environmental quality of highly pressured lagoons. Graphical abstract: Unlabelled Image Highlights: Total Zn, Cu and Pb in sediments exceed the natural background concentrations. Sediments are enriched in mobile Hg, Pt, Au and Ag, with a decreasing S-N gradient. Exposed mussels bioaccumulated Ag (x10) and Hg (x5) compare to reference. Sediment concentrations of Ag, Au, Ba, Bi, Sb affect mussel physiological parameters. Geochemical and physiological endpoints proved suitable for lagoon biomonitoring.