Contaminants in fine sediments and their consequences for biota of the Severn Estuary

Marine Pollution Bulletin
W J LangstonA R Brown

Abstract

When the first MPB special issue was published 25 years ago it was suggested that high body burdens of metals and selected organic pollutants in the Severn Estuary were the result of anthropogenic loadings from a variety of sources. The objective of this synopsis is to illustrate recent trends for contaminants (metals, PAHs, PCBs) in sediments and benthic biota and to consider the evidence for improved environmental quality over the last quarter of a century. Contaminants in sediments and sediment-dwelling fauna such as Hediste(=Nereis)diversicolor are, generally, evenly distributed over the estuary - which is the consequence of extensive re-suspension and redistribution of fine sediment by strong tidal currents. Such dispersal tends to mask the influences of individual discharges and physical characteristics are considered to be the major drivers affecting biodiversity in the Severn Estuary, often overshadowing contaminant concerns. Following the closure of major industries and the introduction of stricter pollution control, many inputs have ceased or been reduced and there are indications that environmental concentrations are now lower. Bioaccumulation of most contaminants has declined accordingly (with the possible exception...Continue Reading

References

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Jan 1, 1997·Environmental Science and Pollution Research International·S J Harrad, D J Smith
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Citations

Feb 20, 2016·Marine Pollution Bulletin·Ivanildo Surini SouzaDenis M S Abessa
Nov 18, 2015·Applied Microbiology and Biotechnology·Xiao-Ming LuJian-Jun Chen
Mar 23, 2011·Marine Environmental Research·J García-AlonsoM Elliott
Dec 17, 2015·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Cláudia RibeiroMaria Elizabeth Tiritan
Jan 19, 2010·Marine Pollution Bulletin·N MurdochB Lin
Jan 23, 2010·Marine Pollution Bulletin·W J LangstonG E Millward
Feb 2, 2010·Marine Pollution Bulletin·R Ballinger, T Stojanovic
Dec 19, 2018·Environmental Science and Pollution Research International·Lucas Buruaem MoreiraDenis Moledo de Souza Abessa
Nov 1, 2012·Environmental Science & Technology·Corina M CiocanJeanette M Rotchell

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