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(a) The pump-scoop dredge used in Poole Harbour, UK. (b) Aerial imagery of scarring from pump-scoop dredging within Poole Harbour. Modified with permission from Jensen et al. (2005) and Footprint Ecology Ltd. (Fearnley et al., 2013) respectively. No scale bar was included in original publication, although the circular scars generally range from 5–15 m across.
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