文章基本信息

标题：Salmon farm impacts on muddy-sediment megabenthic assemblages on the west coast of Scotland
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作者：Thomas A. Wilding ; Chris J. Cromey ; Thom D. Nickell 等
期刊名称：Aquaculture Environment Interactions
印刷版ISSN：1869-215X
电子版ISSN：1869-7534
出版年度：2009
卷号：2
期号：2
页码：145-156
出版社：Inter-Research
摘要：We assessed the impact of salmon farms on the megabenthos associated with muddy habitats using a novel drop-and-drift video camera approach. Megabenthic burrowers and suspension feeders were adversely affected by farm proximity, as indicated by modelled benthic flux of dry solids (DSFlux, g m⁻² yr⁻¹). The burrow-count threshold DSflux was 400, beyond which burrow density declined rapidly. Suspension feeder densities were reduced by a factor of 4 in close proximity (DSFlux > 8000 g m^–2 yr^–1) to the salmon farms, but only where the sediment was relatively muddy. In terms of suspension feeders, threshold levels of DSFlux varied between sites, ranging from 12 to 665 g m^–2 yr^–1. There was no evidence that vagile predator/scavengers were either attracted to, or repelled by, salmon farms. We conclude that burrowers and suspension feeders were relatively resilient to salmon farms in muddy, sea-loch habitats and that detectable impacts did not exceed 100 m from the cage boundary.
关键词：Megabenthos ^. Scotland ^. Salmon farming ^. DEPOMOD ^. Regulation ^. Video survey