used to examine the status of demersal fishery resources in each area, focusing on catch rate and biomass trends … effort in the fisheries. The catch rates have declined up to 96% in some regions, while biomass estimates are down to 6% of … the virgin stock biomass. Most of the dominant species have exploitation ratios over 0.40. Analysis of the standardized …

demersal fishery resources in the Gulf of Thailand. Analyses were focused on biomass trends, population parameters and … indicate by 1995, the trawlable biomass in the Gulf had declined to only about 8.2% of the biomass level in 1961. The … spp., Saurida spp. and squids) comprising trawlable biomass. Estimates of exploitation rate (E) for 23 species indicate …

The biomass of 40 ecological groups, the diet composition of prey and predators, production/biomass (P/B) and … consumption/biomass (Q/B) ratios, and catches were used as basic input to parameterize an Ecopath model of the Gulf of Thailand … profit) were also used as input for the time-series simulations using Ecosim. The results depict changes in biomass and …