ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on July 26, 2008
ICES Journal of Marine Science: Journal du Conseil 2008 65(8):1414-1420; doi:10.1093/icesjms/fsn125
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This article appears in the following ICES Journal of Marine Science issue: Marine Environmental Indicators: Utility in Meeting Regulatory Needs [View the issue table of contents]
Biological indicators of disturbance at a dredged-material disposal site in Liverpool Bay, UK: an assessment using time-series data
1 Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, Lowestoft Suffolk, NR33 OHT, UK
2 Napier University, School of Life Sciences, 10 Colinton Road, Edinburgh E10 5DT, UK
Correspondence to P. Whomersley: tel: +44 1502 524304; fax: +44 1502 513865; e-mail: p.whomersley{at}cefas.co.uk
Whomersley, P., Ware, S., Rees, H. L., Mason, C., Bolam, T., Huxham, M., and Bates, H. 2008. Biological indicators of disturbance at a dredged-material disposal site in Liverpool Bay, UK: an assessment using time-series data. – ICES Journal of Marine Science, 65: 1414–1420.The development of reliable indicators of disturbance in the marine environment is essential because of increasing anthropogenic pressures and the need for more effective regulation. Our objective was to evaluate 13 nationally and internationally recommended metrics, using a large dataset derived from annual (1996–2003) macro-invertebrate infaunal surveys of a Liverpool Bay dredged-material disposal site. The primary and derived univariate metrics, along with multivariate derivations, were assessed and scored against six selection criteria. Metrics that did not correlate with the pressure indicator (the annual quantity of material disposed of) were discounted from further analysis. Of the 13 metrics evaluated, only measures of species number and Margalef’s species richness index were significantly correlated. Although assemblage types were significantly different between stations, common time patterns were observed, indicating that underlying larger scale, low-frequency events may have influenced assemblage development at all locations.
Keywords: biological indicators, dredged-material disposal, macrofauna, time-series data
Received 23 November 2007; accepted 17 April 2008; advance access publication 26 July 2008.
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