Seasonal and spatial variation of phytoplankton and relationship with water-quality factors in Futian Mangroves of Shenzhen
WANG Yu1,2, LU Changyi2, TAN Fengyi3, XU Hualin4, TANG Senming1
1. The Third Institution of Oceangragphy, SOA, Xiamen 361005, China; 2. State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China; 3. Department of Biology and Chemistry, City University of Hong Kong, Hong Kong, China; 4. The State Mangrove Reserve Administration in Shenzhen, Shenzhen, 518040, China
Phytoplankton community were studied at 5 sites in Futian Mangrove Reserves of Shenzhen from Oct.2005 to Sep.2006.The species composition,densities and distribution of phytoplankton,in seasonal and spatial scale,were studied.Main water-quality factors were preliminary examined for their relations to phytoplankton densities.As result a total of 51 taxa (including 1 variety and 9 unidentified taxa) belonging to 28 genera in 5 phyta were identified.It showed that diatoms,such as Cyclotella caspia and Thalassiosira nordenskiöldi dominated in 4 seasons in most sites.Among the others,species of Cyanobacteria and Chlorophyta,such as Oscillatoria minima and Chlorella vulgaris,only dominated at a few sites.In contrast to a remarkable seasonal and spatial variation of species compositions,the phytoplankton densities changes little in season though they alternated with sites in spatial.Phytoplankton density was high reaching 106 cells·L-1 in 4 seasons.Water qualities changed with seasons in 5 sites due to the influence of domestic and industrial wastewater.The sites contaminated by the sewage are in sequence of Ⅳ>Ⅱ>Ⅴ>Ⅰ>Ⅲ,the pollution made water quality quite different with that of seawater in the open sea.Correlations of phytoplankton density with total nitrogen and salinity were found.It showed that the phytoplankton density changed positively with salinity but negatively with the total nitrogen.
王雨1,2, 卢昌义2, 谭凤仪3, 徐华林4, 唐森铭1*. 深圳红树林区浮游植物时空变化与水质要素的关系[J]. , 2007, 26(6): 505-512.
WANG Yu1,2, LU Changyi2, TAN Fengyi3, XU Hualin4, TANG Senming1. Seasonal and spatial variation of phytoplankton and relationship with water-quality factors in Futian Mangroves of Shenzhen. , 2007, 26(6): 505-512.
