Community structure of Rotifera and eutrophication evaluation of Nansha Mangal-Wetland Park in Guangzhou City

[摘要] The community structure of Rotifera was investigated in four areas, namely the water inlet area (Ia, 1#), Sonneratia apetala area ((Sa, 2# and 3#), Phragmites australis area (Pa, 4# and 5#), and water outlet area (Oa, 6#), in Nansha Mangal-Wetland Park (NMP) in 2017. Indices, such as the dominance index (Y), Shannon Wiener Index (H'), Margalef Index (D), Saprobic index (S), and Brachionus: Trichocerca quotient (Q B/T), were considered. A total of 73 species of Rotifera were identified, and the abundance ranged from 4.5 to 2585.8 indL-1with significant seasonal differences. Brachionus angularis and Asplanchna spp. were the dominant species (Y>0.01). Redundancy analysis (RDA) indicated that CODMn, dissolved oxygen (DO) were the most important factors regulating the community structure of the Rotifera. Evaluation of the results using indexes such as H' showed large deviations from the results based on physicochemical indicators. The results from Q B/T were not compatible, and the S index was found to be more suitable for water quality evaluation in the NMP. Based on the results, the Sa area was more eutrophic than the Pa area.

[发布机构] School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, Guangdong; 510275, China^1;Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, Guangdong; 510275, China^2

[学科分类] 环境科学（综合）

[关键词] Community structures;Eutrophication evaluations;Large deviations;Phragmites australis;Redundancy analysis (RDA);Seasonal differences;Sonneratia apetala;Water quality evaluation