Locate aquaculture systems in areas with fast currents
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
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Background information and definitions
Aquaculture systems can negatively impact subtidal benthic invertebrate communities through pollution and diminished water quality (Wu et al. 1994). For instance, it can cause anoxic conditions (lack of oxygen) due to waste build up from fish food and faeces. Locating aquaculture systems in areas with fast currents may help maintain water quality by increasing water exchange, allowing greater dispersal and dilution of pollutant loads (Hall-Spencer et al. 2006; Sarà et al. 2006). Reducing the risk of a built-up of pollution levels may prevent negative impacts on subtidal benthic invertebrates.
Evidence for other interventions related to the relocation of aquaculture activities are summarised under “Threat: Pollution – Locate aquaculture systems in already impacted areas”, “Locate aquaculture systems in vegetated areas”, and “Locate artificial reefs near aquaculture systems (and vice versa) to act as biofilters”.
Hall-Spencer J., White N., Gillespie E., Gillham K. & Foggo A. (2006) Impact of fish farms on maerl beds in strongly tidal areas. Marine Ecology Progress Series, 326, 1–9.
Sarà G., Scilipoti D., Milazzo M. & Modica A. (2006) Use of stable isotopes to investigate dispersal of waste from fish farms as a function of hydrodynamics. Marine Ecology Progress Series, 313, 261–270.
Wu R.S.S., Lam K.S., MacKay D.W., Lau T.C. & Yam V. (1994) Impact of marine fish farming on water quality and bottom sediment: A case study in the sub-tropical environment. Marine Environmental Research, 38, 115–145.
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This Action forms part of the Action Synopsis:Subtidal Benthic Invertebrate Conservation