Heavy metal amount typically is much bigger in coastal and lagoon sediment than into overlying water. Sediment can be considered as a temporary sink for pollutants; in fact, remobilisation processes are able to bring to diffusion of contaminants into water body trough bioturbation, concentration gradient or resuspension caused by flooding, tide or boat traffic, all process that could easily change their geochemical parameters (e.g. redox potential) and make them more bioavailable. A complex net of this kind of events is notable in the Venice Lagoon (Italy), where two heavy metal-source point (Porto Marghera industrial area and the Murano island, renowned for artistic glass production), a water basin with an intense inland navigation (due both to local traffic and to shipping through the three harbour mouths, connecting the Lagoon with sea) and fishing activities are really active. Specifically, trough a multidisciplinary approach, aim of this study has been to define and characterize both the best aquaculture lagoon sites and the Mollusc Bivalves population growing up into. Tapes philippinarum and T. decussatus particularly has shown an increased economic value, then environmental and social sustainability must be supported. Both ecotoxicological (e.g. heavy metal bioaccumulation and tissue partitioning, metallothionein induction, condition index, influence of geochemical texture) and molecular markers have been used in order to evaluate environmental quality of old and new aquaculture sites and to look for a Mollusc Bivalves sub-population identification.
|Data di pubblicazione:||2010|
|Titolo:||Ecotoxicological markers to evaluate environmental quality of old and new aquaculture sites in Venice Lagoon, Italy.|
|Titolo del libro:||Proceedings of SETAC Europe 20th Annual Meeting “Science and Technology for Environmental Protection”|
|Appare nelle tipologie:||4.2 Abstract in Atti di convegno|
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