Journal of Pure and Applied MicrobiologyVol. 8 No. May 2014 Special Edition

Phytoplankton Investigation and Environmental Assessment for Dredged Area in Panlong Estuary Section of Dianchi lake, China

Tao Xu1 and Xuejun Pan2

1Life Science College, Yunnan University, Kunming, Yunnan - 650091, P.R. China. 2Faculty of Environment Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P. R. China.

Received on 12 April 2014 and accepted on 09 May 2014



Panlong River is one of the major rivers flowing into the Dianchi Lake. In this paper, phytoplankton investigation and environmental assessment for the dredged area in Panlong Estuary Section of Dianchi lake in Kunming city was reported. After microscopic identification and counting of 6 water samples(two of them is control plot), the water environment were evaluated by the phytoplankton species and quantity which were assessed by the biological diversity index, including Maglarf, Shanon-Wiener, Simpson diversity index, Pielou index and Berger-Parker dominance index. It?s found that there are mainly 7 species of algae, and among them, Microcystis spp. et al., are the dominant species. So the water is assessed as eutrophication, Heavy sewage. Based on the diversity index analysis, the dredged area sampling sites were relatively higher than the non-dredged areas in biodiversity of phytoplankton. Summarily, the water quality after dredging has been improved to some extent. Phytoplankton biodiversity indicators should be one of the important water environmental assessment methods.

Keywords : Panlong Estuary; Dredging; phytoplankton biodiversity; Environmental assessment.