Implications of dredging induced changes in sediment particle size composition for the structure and function of marine benthic macrofaunal communities

KM Cooper, M Curtis, Wan Mohd Rauhan Wan Hussin, CRS Barrio Frojan, Emma Clare Defew, V Nye, David Maxwell Paterson

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

A meta-analysis approach was used to assess the effect of dredging induced changes in sediment composition, under different conditions of natural physical disturbance, for the structure and function of marine benthic macrofaunal communities. Results showed the sensitivity of macrofaunal communities increased as both the proportion of gravel increased and the level of natural physical disturbance decreased. These findings may be explained by the close association of certain taxa with the gravel fraction, and the influence of natural physical disturbance which, as it increases, tends to restrict the colonisation by these species.We conclude that maintaining the gravel content of surface sediments after dredging and, where practicable, locating extraction sites in areas of higher natural disturbance will minimise the potential for long-term negative impacts on the macrofauna.
Original languageEnglish
Pages (from-to)2087-2094
Number of pages7
JournalMarine Pollution Bulletin
Volume62
Issue number10
Early online date21 Jul 2011
DOIs
Publication statusPublished - Oct 2011

Keywords

  • Benthic Macrofauna

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