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dc.contributor.authorGambang, Albert Chuan
dc.contributor.authorRajali, Hadil bin
dc.contributor.authorHassan, Raja Bidin bin Raja
dc.contributor.authorAli, Rosidi bin
dc.contributor.authorShiomi, Kunimune
dc.contributor.authorFujiwara, Shunji
dc.contributor.authorBasir, Shamusudin bin
dc.date.accessioned2018-12-06T07:54:36Z
dc.date.available2018-12-06T07:54:36Z
dc.date.issued1999
dc.identifier.citationGambang, A. C., Rajali, H. bin, Hassan, R. B. bin R., Ali, R. bin, Shiomi, K., Fujiwara, S., & Basir, S. bin. (1999). Multi-species fish stock assessment by acoustic method in the South China Sea Area I: Gulf of Thailand and east coast of Peninsular Malaysia. In Proceedings of the First Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area I: Gulf of Thailand and Peninsular Malaysia, 24-26 November 1997, Bangkok, Thailand (pp. 336-346). Samutprakan, Thailand: Training Department, Southeast Asian Fisheries Development Center.en
dc.identifier.urihttp://hdl.handle.net/20.500.12067/793
dc.description.abstractAcoustic resource surveys were conducted by M/V SEAFDEC in the Gulf of Thailand and off the east coast of Peninsular Malaysia from September 5 to 28, 1995 for pre-NE monsoon season and from April 24 to May 17, 1996 for post-NE monsoon season, using the scientific echosounder FQ-70 (Furuno Electric Co.). Collected raw values of backscattering strength (SV) from the 200 kHz were carefully corrected and filtered to eliminate the influence of plankton. These corrected SV values were classified into pelagic and demersal fish, and were used to estimate the biomass of pelagic and demersal multispecies fish. Biomass of pelagic and demersal fish for each season was only estimated in the east coast of Peninsular Malaysia within Malaysian EEZ waters due to the availability of previous fisheries statistics and biological data. Dominant species were selected based on the fisheries statistics and landing place survey. Length (L) and weight were obtained from previous literatures. Target strength (TS) of these dominant species were calculated as TS =20 log (L) -66. The distribution of the SV values for pelagic fish showed a distinct difference between preand post- monsoon seasons. Greater concentrations of SVs were observed from offshore compared to the nearshore waters in pre-monsoon season. The distribution for the demersal fish showed that there was no clear difference between pre- and post-monsoon. The estimated biomass of multi-species fish off the east coast of Peninsular Malaysia within Malaysian EEZ for the pre-and post-monsoon seasons was 4.4x105 tonnes (2.3x105 tonnes of pelagic fish and 2.1x 105 tonnes of demersal fish) and 3.1x105 tonnes (1.9x105 tonnes of pelagic fish and 1.2x 105 tonnes of demersal fish), respectively.en
dc.language.isoenen
dc.publisherTraining Department, Southeast Asian Fisheries Development Centeren
dc.subjectSouth China Seaen
dc.subjectGulf of Thailanden
dc.subjectMalaysiaen
dc.titleMulti-species Fish Stock Assessment by Acoustic Method in the South China Sea Area I: Gulf of Thailand and East Coast of Peninsular Malaysiaen
dc.typeConference paperen
dc.citation.spage336
dc.citation.epage346
dc.subject.asfapelagic fisheriesen
dc.subject.asfafishery surveysen
dc.subject.asfastock assessmenten
dc.subject.asfademersal fisheriesen
dc.subject.asfaEcho surveysen
dc.subject.asfamultispecies fisheriesen
dc.citation.conferenceTitleProceedings of the First Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area I: Gulf of Thailand and Peninsular Malaysia, 24-26 November 1997, Bangkok, Thailanden


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