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Results of bottom trawl surveys carried out in Vietnamese waters (20-200 m) in 1996-1997

Author

Listed:
  • Dang, V.T.
  • Tran, D.
  • Nielsen, R.
  • Riget, F.

Abstract

Bottom trawl surveys were conducted in the southwest monsoon season in 1996 (survey 1) and in the northeast monsoon season in 1996-97 (survey 2) throughout Vietnamese waters. The surveys mainly covered the depth zone 50-200 m but in the northeast monsoon season the depth zone 20-50 m was included in the northern and southern areas. Overall, 273 trawl hauls were conducted. The total biomass for Vietnamese waters in the depth zone 20-200 m was estimated at 700 000 t . Biomass estimates are given for the most abundant species. A relatively higher mean catch-per-unit effort (CPUE) was obtained from survey 2 than from survey 1 and in partcular at depth ranges 50-100 and 100-200 m in south Vietnam. Overall, the dominant families were Monacanthidae (34%), Carangidae (15%), Trichiuridae (9%) and Synodontidae (6%).

Suggested Citation

  • Dang, V.T. & Tran, D. & Nielsen, R. & Riget, F., 2002. "Results of bottom trawl surveys carried out in Vietnamese waters (20-200 m) in 1996-1997," Naga, The WorldFish Center, vol. 25(1), pages 15-18.
    • Handle: RePEc:wfi:wfnaga:35725
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    More about this item

    Keywords

    Biomass; Catch composition; Catch/effort; Fishery surveys; Vietnam;
    All these keywords.

    JEL classification:

    • Q00 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General - - - General

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