Toxic metal enrichment and boating intensity: sediment records of antifoulant copper in shallow lakes of eastern England

Boyle, John F., Sayer, Carl D., Hoare, Dan, Bennion, Helen, Heppel, Kate, Lambert, Stephen J., Appleby, Peter G., Rose, Neil L. and Davy, Anthony J. (2016) Toxic metal enrichment and boating intensity: sediment records of antifoulant copper in shallow lakes of eastern England. Journal of Paleolimnology, 55 (3). pp. 195-208. ISSN 0921-2728

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Abstract

Tributyltin (TBT), an aqueous biocide derived from antifouling paint pollution, is known to have impacted coastal marine ecosystems, and has been reported in the sediment of the Norfolk and Suffolk Broads, a network of rivers and shallow lakes in eastern England. In the marine environment, the 1987 TBT ban has resulted in expanded use of alternative biocides, raising the question of whether these products too have impacted the Broads ecosystem and freshwaters in general. Here we examine the lake sediment record in the Norfolk and Suffolk Broads for contamination by copper (Cu) (as an active biocide agent) and zinc (Zn) (as a component of booster biocides), to assess their occurrence and potential for causing environmental harm in freshwater ecosystems. We find that, after the introduction of leisure boating, there is a statistically significant difference in Cu enrichment between heavily and lightly boated sites, while no such difference exists prior to this time. At the heavily boated sites the onset of Cu enrichment coincides with a period of rapid increase in leisure boating. Such enrichment is maintained to the present day, with some evidence of continued increase. We conclude that Cu-based antifouling has measurably contaminated lakes exposed to boating, at concentrations high enough to cause ecological harm. Similar findings can be expected at other boated freshwater ecosystems elsewhere in the world.

Item Type: Article
Additional Information: The Author(s) 2015. This article is published with open access at Springerlink.com
Uncontrolled Keywords: freshwater,antifouling paint,copper,tbt,lake sediment ,pollution
Faculty \ School: Faculty of Science > School of Biological Sciences
Depositing User: Pure Connector
Date Deposited: 11 Feb 2016 09:28
Last Modified: 03 Jul 2020 23:44
URI: https://ueaeprints.uea.ac.uk/id/eprint/57016
DOI: 10.1007/s10933-015-9865-z

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