Community Structure and Spatio-temporal Variation of Fish in Liuxi River Reserve
WU Qian, LI Chao, GAO Tianyang, LI Wei, ZHANG Wenjun, WANG Junjie, ZHAO Jun
Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory forHealthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-Friendly Aquaculture, School of Life Science, South China Normal University, Guangzhou 510631, China
Abstract：Fish were sampled at 3 monitoring sites in Spinibarbus hollandi National Aquatic Germplasm Reserve in Liuxi River in winter (December 2017), spring (April 2018), summer (June 2018) and autumn (October 2018) by the combination of gill nets, trap cages and electric fishing in order to understand the structure of fish community in Liuxi River National Aquatic Germplasm Resources Reserve and the changes in fish community diversity in different river sections and seasons. During this survey, 57 species of fish were collected, belonging to 5 orders, 14 families and 50 genera, including 43 species in Cypriniformes, 6 species in Perciformes, 5 species in Siluriformes, 2 species in Synbgranchiformes and 1 species in Cyprinodontiformes. The relative importance index (IRI) showed that Nile tilapia Oreochromis niloticus, Acheilognathus tonkinensis and common carp Cyprinus carpio were the annual dominant species from 2017 to 2018. The Shannon-Wiener (H′), richness (D) and evenness (J′) revealed that there were the maximal species diversity and uniformity of fish communities in downstream, and that there were higher species diversity, richness, and uniformity of fish communities in summer than those in the other seasons. The Jaccard′s similarity index between the monitoring sites showed that the composition of fish species in the upstream and midstream, and upstream and downstream were medium dissimilar and the midstream and downstream were moderately similar. The fish species composition was found to be medium dissimilar in spring and summer, spring and winter, summer and winter, summer and autumn and moderately similar in spring and autumn, autumn and winter. ABC curve analysis revealed that the fish community in spring, summer and winter was in a stable state, and in a state of moderate disturbance in the autumn.
吴倩, 李潮, 高天扬, 李炜, 张雯君, 王俊杰, 赵俊. 流溪河保护区鱼类群落结构及其时空变动[J]. 水产科学, 2020, 39(2): 234-244.
WU Qian, LI Chao, GAO Tianyang, LI Wei, ZHANG Wenjun, WANG Junjie, ZHAO Jun. Community Structure and Spatio-temporal Variation of Fish in Liuxi River Reserve. 水产科学, 2020, 39(2): 234-244.
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2020, Vol. 39 
