The tempo-spatial variations of phytoplankton diversities and their correlation with trophic state levels in a large eutrophic Chinese lake |
| |
| Institution: | 1. MOE Laboratory for Earth Surface Processes, College of Urban & Environmental Sciences, Peking University, Beijing 100871, China;2. Section of Toxicology and Environmental Chemistry, Institute A, University of Copenhagen, University Park 2, DK-2100 Copenhagen Ø, Denmarka;1. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing, 210008, China;2. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China;1. Department of Chemistry and Environmental Research Center, Missouri University of Science and Technology, Rolla, MO, USA;3. Water and Sewer Department, City of Tulsa, Tulsa, OK, USA;1. MTA Centre for Ecological Research, Department of Tisza Research, 18/c, Bem Square, H-4026 Debrecen, Hungary;2. University of Debrecen, Department of Hydrobiology, Egyetem Tér 1, H-4032 Debrecen, Hungary;3. Environmental Protection, Nature Conservation and Water Authority, Lower-Tisza Region, Felső Tisza-part 17, H-6721 Szeged, Hungary;4. MTA-DE Biodiversity and Ecosystem Services Research Group, Egyetem tér 1, H-4032 Debrecen, Hungary;5. Environmental Protection, Nature Conservation and Water Authority, Trans-Tisza Region, Hatvan u. 16, H-4025 Debrecen, Hungary;1. College of Agronomy (Academy of Agricultural Science), Northwest A & F University, Yangling 712100, PR China;2. College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China;3. College of Resources and Environment, Northwest A & F University, Yangling 712100, PR China;4. Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, PR China;1. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China;2. Jiangxi Provincial Institute of Water Sciences, Nanchang, Jiangxi 330029, PR China;3. Nanchang Institute of Technology, Nanchang 330099, PR China;4. Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, PR China;5. College of Chemical and Environmental Engineering, Chongqing Three Gorges University, Wanzhou 404000, PR China |
| |
| Abstract: | Lake Chaohu is one of the most eutrophic lakes in China. Research on this lake's seasonal and spatial variations in phytoplankton diversity is needed to understand the distribution of eutrophication, as well as to find appropriate comprehensive biodiversity indices to assess the eutrophication status of the lake. The present study indicated that the Margalef index of all samples was as low as 0.799 ± 0.543 in summer (August 2011) and as high as 1.467 ± 0.653 in winter (February 2012). The Margalef index of the river samples had a high mean value and substantial variation compared with the lake samples. The Peilou index of the lake samples was higher than that of the river samples in summer and autumn (November 2011) but lower than that of the river samples in winter. In spring (May 2012), the Peilou index of the western samples was lower than that of the eastern samples. The spatial distribution of the Shannon–Wiener index was more similar to that of the Peilou index in autumn and winter, while in spring and summer, the spatial distribution was affected by both species richness and evenness. High eutrophication levels occurred in the western lake in spring and summer, whereas high levels occurred in the eastern lake, especially in the middle of the lake, in autumn and winter. The total trophic state index (TSI) in all samples exhibited a significant negative correlation with the Margalef (r = −0.726) and Peilou (r = −0.530) indices but a significant positive correlation with the Shannon–Wiener (r = 0.654) index. The partial correlation analysis results implied that these phytoplankton biodiversity indices could serve as synthetic ecological indicators to assess the eutrophication condition of Lake Chaohu. |
| |
| Keywords: | Phytoplankton diversity Trophic state index Correlation analysis Lake Chaohu |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
