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Article: Environmental management of marine fish culture in Hong Kong

TitleEnvironmental management of marine fish culture in Hong Kong
Authors
KeywordsCarrying capacity
Coastal inlets
Eutrophication
Fish farm
Flushing time
Hydrodynamics
Mariculture
Organic pollution
Oxygen depletion
Water quality model
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul
Citation
Marine Pollution Bulletin, 2003, v. 47 n. 1-6, p. 202-210 How to Cite?
AbstractMarine fish farming is an important commercial practice in Hong Kong. Marine fish farms located in eutrophic coastal waters often face the threat of severe dissolved oxygen depletion associated with algal blooms and red tides. On the other hand, mariculture activities also contribute to pollution. The sustainable management of mariculture requires proper siting of the fish farms and stocking density control. Both of these are related to the carrying capacity of the water body concerned, which is mainly governed by its flushing characteristics. A simple method to determine the carrying capacity of a fish farm has been developed by using three-dimensional (3D) hydrodynamic modelling and its effective coupling with a diagenetic water quality model. A systematic methodology using numerical tracer experiments has been developed to compute the tidal flushing in a fish farm. The flushing time is determined from the results of a numerical tracer experiment using robust 3D hydrodynamic and mass transport models. A unit tracer concentration is initially prescribed inside the region of interest and zero elsewhere; the subsequent mass transport and the mass removal process are then tracked. The fish farms are usually situated in well-sheltered shallow embayments and may not connect directly to the open water. It is found that it is necessary to define both "local" and "system-wide" flushing times to represent the effectiveness of the mass exchange with the surrounding water body and the open sea respectively. A diagenetic water quality model simulating the sediment-water-pollutant interaction is employed to address the response of the water column and the benthic layer to pollution discharges. With the flushing rate reliably computed, the carrying capacity of the fish farm can be determined in terms of key water quality parameters: chlorophyll-a, dissolved oxygen, organic nitrogen and potential lowest dissolved oxygen level on a day of negligible photosynthetic production. The predictions are well-supported by field data. © 2003 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/48538
ISSN
2015 Impact Factor: 3.099
2015 SCImago Journal Rankings: 1.264
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, JHWen_HK
dc.contributor.authorChoi, KWen_HK
dc.contributor.authorArega, Fen_HK
dc.date.accessioned2008-05-22T04:16:35Z-
dc.date.available2008-05-22T04:16:35Z-
dc.date.issued2003en_HK
dc.identifier.citationMarine Pollution Bulletin, 2003, v. 47 n. 1-6, p. 202-210en_HK
dc.identifier.issn0025-326Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/48538-
dc.description.abstractMarine fish farming is an important commercial practice in Hong Kong. Marine fish farms located in eutrophic coastal waters often face the threat of severe dissolved oxygen depletion associated with algal blooms and red tides. On the other hand, mariculture activities also contribute to pollution. The sustainable management of mariculture requires proper siting of the fish farms and stocking density control. Both of these are related to the carrying capacity of the water body concerned, which is mainly governed by its flushing characteristics. A simple method to determine the carrying capacity of a fish farm has been developed by using three-dimensional (3D) hydrodynamic modelling and its effective coupling with a diagenetic water quality model. A systematic methodology using numerical tracer experiments has been developed to compute the tidal flushing in a fish farm. The flushing time is determined from the results of a numerical tracer experiment using robust 3D hydrodynamic and mass transport models. A unit tracer concentration is initially prescribed inside the region of interest and zero elsewhere; the subsequent mass transport and the mass removal process are then tracked. The fish farms are usually situated in well-sheltered shallow embayments and may not connect directly to the open water. It is found that it is necessary to define both "local" and "system-wide" flushing times to represent the effectiveness of the mass exchange with the surrounding water body and the open sea respectively. A diagenetic water quality model simulating the sediment-water-pollutant interaction is employed to address the response of the water column and the benthic layer to pollution discharges. With the flushing rate reliably computed, the carrying capacity of the fish farm can be determined in terms of key water quality parameters: chlorophyll-a, dissolved oxygen, organic nitrogen and potential lowest dissolved oxygen level on a day of negligible photosynthetic production. The predictions are well-supported by field data. © 2003 Elsevier Science Ltd. All rights reserved.en_HK
dc.format.extent570098 bytes-
dc.format.extent425172 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbulen_HK
dc.relation.ispartofMarine Pollution Bulletinen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectCarrying capacityen_HK
dc.subjectCoastal inletsen_HK
dc.subjectEutrophicationen_HK
dc.subjectFish farmen_HK
dc.subjectFlushing timeen_HK
dc.subjectHydrodynamicsen_HK
dc.subjectMaricultureen_HK
dc.subjectOrganic pollutionen_HK
dc.subjectOxygen depletionen_HK
dc.subjectWater quality modelen_HK
dc.subject.meshAquacultureen_HK
dc.subject.meshChlorophyll - analysisen_HK
dc.subject.meshEutrophicationen_HK
dc.subject.meshFisheriesen_HK
dc.subject.meshForecastingen_HK
dc.subject.meshHong Kongen_HK
dc.subject.meshModels, Theoreticalen_HK
dc.subject.meshNitrogen - analysisen_HK
dc.subject.meshOxygen - analysis - metabolismen_HK
dc.subject.meshPhotosynthesisen_HK
dc.subject.meshPopulation Dynamicsen_HK
dc.subject.meshWater Movementsen_HK
dc.subject.meshWater Pollutantsen_HK
dc.subject.meshWater Pollution - prevention & controlen_HK
dc.titleEnvironmental management of marine fish culture in Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0025-326X&volume=47&issue=1-6&spage=202&epage=210&date=2002&atitle=Environmental+management+of+marine+fish+culture+in+Hong+Kongen_HK
dc.identifier.emailLee, JHW: hreclhw@hku.hken_HK
dc.identifier.emailChoi, KW: choidkw@hkucc.hku.hken_HK
dc.identifier.authorityLee, JHW=rp00061en_HK
dc.identifier.authorityChoi, KW=rp00107en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/S0025-326X(02)00410-1en_HK
dc.identifier.pmid12787621-
dc.identifier.scopuseid_2-s2.0-0038699146en_HK
dc.identifier.hkuros82372-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0038699146&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume47en_HK
dc.identifier.issue1-6en_HK
dc.identifier.spage202en_HK
dc.identifier.epage210en_HK
dc.identifier.isiWOS:000183700200033-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLee, JHW=36078318900en_HK
dc.identifier.scopusauthoridChoi, KW=25627214800en_HK
dc.identifier.scopusauthoridArega, F=6506075469en_HK

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