|
| Structural Characteristics of Phytoplankton Community in the Spring in Wuliangsuhai Lake, China |
| |
| View Full Text View/Add Comment Download reader |
| KeyWord:Wuliangsuhai Lake; phytoplankton community; cluster analysis; multi-scaling analysis |
|
|
| Hits: 2340 |
| Download times: 1835 |
| Abstract: |
| After the period of frozen in the winter, the community structure of phytoplankton in spring may indicate the environment quality of wetlands to some extent in the cold region. The community structure of phytoplankton in Wuliangsuhai in May of 2012 was analyzed. The results showed that there were 59 genera, 7 phyla and 96 species of phytoplankton with dominated chlorophyta including 54 species of 29 genera accounting for 56.25% of the whole phytoplankton at Wuliangsuhai. We also found 11 genera and 18 species of bacillariophyta accounting for 18.75% of phytoplankton. The dominant species were Gomphosphaeria lacustris, Chroococcus, Oocystis, Scenedesmus quadricauda, Chlorella vulgaris, Dictyosphaerium pulchellum, Cyclotella meneghiniana. The average density of phytoplankton was 8.895×107 cell·L-1. The phytoplankton abundance was unevenly spatially-distributed with a variation coefficient of 0.94. The phytoplankton Shannon index was 1.34 to 2.66 and Pielou index varied from 0.30 to 0.52. Based on the information about the abundance of phytoplankton, the index of dominant species, and the index of diversity suggests that Wuliangsuhai has been eutrophicated dominated with Cyanophyta, Chlorophyta and Bacillariophyta. Clustering and multi-dimensional scaling analysis showed that phytoplankton community could be classified as the influent community in the north, deep purification community in the south, hydrostatic community in the north along the coast, retention community in the central part of the lake in spring. |
|
|
|
