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Article: Management of marine fish farming in the sub-tropical environment: A modelling approach

TitleManagement of marine fish farming in the sub-tropical environment: A modelling approach
Authors
KeywordsManagement
Marine Fish Farming
Model
Issue Date1999
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aquaculture
Citation
Aquaculture, 1999, v. 174 n. 3-4, p. 279-298 How to Cite?
AbstractTwo deterministic models were applied to simulate hydrographic and water quality conditions within a sub-tropical marine fish culture site, where trash fish is used as feed. A two-dimensional, two-layer hydrodynamic model of tidal flows and salt transport calculated the water level, velocity and salinity in each grid cell of 50 m square in each layer within the culture area approximately every 30 s during a tidal cycle. Results from this flow model provided hydraulic data for input into a three-dimensional tidal water quality model, which was run to simulate water quality due to specified pollutant loadings from the marine fish culture operations. Simulated output from the models agreed reasonably well with observed field data, except for dissolved oxygen and nitrate levels in surface waters. This could be due to a conservative estimation of re-aeration rates in the model system. In applying the models to sub-tropical waters of Hong Kong, the simulation predicted the extent of pollution and area affected under varying fish stock and pollutant loadings. It was shown that impacts of fish culture activities on water quality at the test culture site were localized owing to strong advection by tidal residual flows. The higher simulated level of organic nitrogen in the bottom waters over the year at the test fish culture site was due to increased release of organic nitrogen through decay of wasted feed from the sea bed and from trash fish feed. Models of marine fish culture and environmental effects have applications in determining acceptable stocking levels, and the effects of changing feed and culture species, and for locating suitable culture sites in coastal areas.
Persistent Identifierhttp://hdl.handle.net/10722/178688
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.110
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWu, RSSen_US
dc.contributor.authorShin, PKSen_US
dc.contributor.authorMackay, DWen_US
dc.contributor.authorMollowney, Men_US
dc.contributor.authorJohnson, Den_US
dc.date.accessioned2012-12-19T09:49:09Z-
dc.date.available2012-12-19T09:49:09Z-
dc.date.issued1999en_US
dc.identifier.citationAquaculture, 1999, v. 174 n. 3-4, p. 279-298en_US
dc.identifier.issn0044-8486en_US
dc.identifier.urihttp://hdl.handle.net/10722/178688-
dc.description.abstractTwo deterministic models were applied to simulate hydrographic and water quality conditions within a sub-tropical marine fish culture site, where trash fish is used as feed. A two-dimensional, two-layer hydrodynamic model of tidal flows and salt transport calculated the water level, velocity and salinity in each grid cell of 50 m square in each layer within the culture area approximately every 30 s during a tidal cycle. Results from this flow model provided hydraulic data for input into a three-dimensional tidal water quality model, which was run to simulate water quality due to specified pollutant loadings from the marine fish culture operations. Simulated output from the models agreed reasonably well with observed field data, except for dissolved oxygen and nitrate levels in surface waters. This could be due to a conservative estimation of re-aeration rates in the model system. In applying the models to sub-tropical waters of Hong Kong, the simulation predicted the extent of pollution and area affected under varying fish stock and pollutant loadings. It was shown that impacts of fish culture activities on water quality at the test culture site were localized owing to strong advection by tidal residual flows. The higher simulated level of organic nitrogen in the bottom waters over the year at the test fish culture site was due to increased release of organic nitrogen through decay of wasted feed from the sea bed and from trash fish feed. Models of marine fish culture and environmental effects have applications in determining acceptable stocking levels, and the effects of changing feed and culture species, and for locating suitable culture sites in coastal areas.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/aquacultureen_US
dc.relation.ispartofAquacultureen_US
dc.subjectManagementen_US
dc.subjectMarine Fish Farmingen_US
dc.subjectModelen_US
dc.titleManagement of marine fish farming in the sub-tropical environment: A modelling approachen_US
dc.typeArticleen_US
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_US
dc.identifier.authorityWu, RSS=rp01398en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0044-8486(99)00024-1en_US
dc.identifier.scopuseid_2-s2.0-0033586675en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033586675&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume174en_US
dc.identifier.issue3-4en_US
dc.identifier.spage279en_US
dc.identifier.epage298en_US
dc.identifier.isiWOS:000080003400009-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridWu, RSS=7402945079en_US
dc.identifier.scopusauthoridShin, PKS=7004445653en_US
dc.identifier.scopusauthoridMacKay, DW=7402241722en_US
dc.identifier.scopusauthoridMollowney, M=35122852700en_US
dc.identifier.scopusauthoridJohnson, D=7406829492en_US

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