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

作     者：Fei Yu Shuwen He Yu Liu Xin Yao Qinyu Sun 

作者机构：School of Environmental Science and Engineering Sun Yat-Sen University Guangzhou Guangdong 510275 China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou Guangdong 510275 China 

出 版 物：《IOP Conference Series: Earth and Environmental Science》 

年 卷 期：2019年第310卷第5期

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 (Y0.01). 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.