Biodiversity and Distribution Characteristics of Fishery Biological Community in Jiulong River Estuary
YE Sunzhong1,2, KE Shuting3, MA Chao1, LUO Donglian1,2, LIU Yong1, YANG Fang1,2, GUO Shuyue1, SHEN Changchun1, CAI Jiandi1, XU Chunyan1, ZHUANG Zhidong1
1.Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian Province, Xiamen 361013, China; 2.Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361103, China; 3.College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Abstract：A 110 kW fishing vessel with truss single beam with 30 mm mesh was used at 10 stations in Jiulong River Estuary and trawled once and every time for 20 minutes at each station on March (spring) and October (autumn) of 2015,to investigate the species composition, dominant species, quantity distribution and diversity of fishery biological communities in this area for sustainable utilization and management and carrying capacity of fishery resources. The results showed that a total of 114 species were collected, belonging to 81 genera, 48 families and 18 orders, dominated by tropical and subtropical water species which belonged to Chinese-Japanese subregion of Indo-West-Pacific fishes. The species replacement rate was 68.4%, with dominant species (relative important index, IRI>1000) ridgetail white prawn Exopalaemon carinioauda, long-tailed anchovy Coilia mystus, Japanese stone crab Charybdis japonica and other 5 species, with evident change in dominant species during the two seasons. The catch was primarily composed of short life cycle, small individual and low nutrition species, with a high percentage of economic species. There was average resource density of 167.43 kg/km2 in spring and 163.36 kg/km2 in autumn, and fish dominated in the catches, with Shannon-Wiener diversity index of 2.38, Margalef richness index of 4.64 and Pielou evenness index of 0.76, indicating that the abundance of fishery biological community had strong seasonal variation, and that the diversity was decreased compared with historical data.
叶孙忠, 柯舒婷, 马超, 罗冬莲, 刘勇, 杨芳, 郭书悦, 沈长春, 蔡建堤, 徐春燕, 庄之栋. 九龙江口渔业生物群落多样性及分布特征[J]. 水产科学, 2020, 39(3): 359-368.
YE Sunzhong, KE Shuting, MA Chao, LUO Donglian, LIU Yong, YANG Fang, GUO Shuyue, SHEN Changchun, CAI Jiandi, XU Chunyan, ZHUANG Zhidong. Biodiversity and Distribution Characteristics of Fishery Biological Community in Jiulong River Estuary. 水产科学, 2020, 39(3): 359-368.
2020, Vol. 39 
