Multi-species Fish Stock Assessment by Acoustic Method in the South China Sea Area I: Gulf of Thailand and East Coast of Peninsular Malaysia
MetadataShow full item record
Acoustic 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.
Gambang, 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.
Showing items related by title, author, creator and subject.
Talib, Zulklifli bin; Karim, Abdul Khalil bin Abdul; Wagiman, Sukarno bin; Ramli, Mohd. Najob bin (Training Department, Southeast Asian Fisheries Development Center, 2004)The coral reef is one of the most and productive ecosystems in the world. It provides a variety of resources and services and thus needs to be protected. The Marine Parks Malaysia was established with the objectives of ...
Ali, Ahmad bin; Abdullah, Mohamed Pauzi bin; Yusof, Abdul Aziz bin; Ilias, Zaidnuddin bin (Training Department, Southeast Asian Fisheries Development Center, 2008)
Overview on Country Policies, Programs Experiences with Artificial Reefs, Stationary Fishing Gear Establishment of Marine Protected Areas in Malaysia Wagiman, Sukarno bin; Karim, Abdul Khalil bin Abdul; Latun, Abd. Razak bin (Training Department, Southeast Asian Fisheries Development Center, 2004)Marine environments are typically strongly linked to the mixing of water masses and, in coastal areas they are greatly influenced by rivers and land runoff. A marine area can also be strongly influenced by activities in ...