Decline of Demersal Coastal Fisheries Resources in Three Developing
Fisheries Research 78 (2006) 130–142 Decline of demersal coastal fisheries resources in three developing Asian countries I.C. Stobutzki a,∗, G.T. Silvestre a,1, A. Abu Talib b, A. Krongprom c, M. Supongpan d, P. Khemakorn c, N. Armada e, L.R. Garces a a WorldFish Center, P.O. Box 500 GPO, 10670 Penang, Malaysia b Fisheries Research Institute, Department of Fisheries, 11960 Batu Maung, Penang, Malaysia c Southern Marine Fisheries Research and Development Center, 79/1 Wichaenchom Rd., Muang, Songkla 9000, Thailand d Marine Fisheries Development Center, Bangkok, Thailand e College of Fisheries, University of the Philippines, Visayas, Miag-ao, Iloilo 5023, Philippines Abstract Worldwide, there is serious concern about the state of fisheries; yet for Asia, which accounts for half of the global fisheries production, information on the state of fisheries in order to guide management is sparse. In this paper we review the results of a regional study that examined the state of demersal fisheries resources in the coastal areas of Malaysia, the Philippines and Thailand. In each country time series of scientific trawl survey data (spanning 12–49 years, depending on the area) were used to assess changes in the total biomass of demersal species over time. All countries showed substantial declines in the total biomass. In Malaysia, the declines were greatest in the shallow depths (<50 m) where the biomass declined to 4–20% of the original estimates. In the Gulf of Thailand, by 1995 the total biomass estimates had declined to less than 8% of the 1965 estimates. In the Philippines, changes in the biomass were examined in different bays and fishing areas and the recent estimates of the biomass were 12–64% of the original estimates.
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