Abstract: To reveal the current situation and changes in community characteristics of fisheries organisms in Sanmen Bay waters, the relative importance index, resource density, species diversity, ABC curve, cluster analysis, non-metric multi-dimensional scale analysis, niche width and trophic level structure were used to probe into the fisheries community in 20 sampling sites during a fisheries resource survey by bottom trawls in spring (April), summer (July), autumn (October) and winter (December) of 2018. The results showed that there was the maximal number of fishery species in summer (84 species) and the minimum in winter (42 species), 3 dominant species in spring, 6 ones in summer, 6 ones in autumn and 2 ones in winter. The maximal number density and weight density of fishery biomes were observed in summer, and the minimum in winter. There were the maximal mean value of Shannon-Wiener diversity index and mean evenness index in autumn and the minimum in winter. The maximal mean richness index was found in summer and the minimum in winter. The ABC curve showed that moderate disturbance was observed in the four seasons of 2018. The analysis of community structure revealed that the seasonal differences in fisheries communities were large, and that the niche widths of fishery biomes were varied greatly in different seasons. Overall, number and biomass of the species in the third trophic levels were dominant, while the number and biomass of the species in the second and fourth trophic levels were relatively minor, with the weak stability of the structure of the fishery biological community. The findings indicated that the implementation of the fishery management system was achieved certain results, and the number of fishery biological species in Sanmen Bay waters was recovered to a certain extent, but it still suffered from the interference of human factors including high fishing pressure, nuclear power plant and breeding pollution, and the decline of resources was been effectively restricted. Therefore, it is urgent to carry out the reform of fishery resource restoration strategy and to strengthen the restoration of fishery resources and marine ecology in Sanmen Bay.
张金勇, 高养春, Amir Shah Ruddin Md Sah, Aileen TAN Shau-Hwai, Norlaila Binti Mohd Zanuri, 李宏俊. 基于高通量测序和形态学鉴定的马来西亚马塘红树林区浮游动物多样性分析[J]. 大连海洋大学学报, 2021, 36(6): 910-919.
2021, Vol. 36 
