摘要
分析研究了两轮调查（１９９２－０５－１９９３－０１、１９９３－０８－１９９４－０５）期间的１０航次采样。结果表明厦门马銮湾富营养化水域的浮游植物具有种类少（仅发现６６种）、丰度高（网采密度：２１３８６×１０４－１１０１３６×１０４个／ｍ３；水采样品密度：１１５０．７／ｃｍ３；叶绿素ａ平均含量达６．６７ｍｇ／ｍ３）和种类多样度（Ｈ＇）、均匀度（Ｊ）都较低（分别仅为０．７８和０．２８）等特点．浮游植物细胞密度的时空波动显著，且主要受羽纹硅藻柔弱菱形藻（Ｎｉｔｚｘｈｉａｄｅｌｉｃａｔｉｓｓｉｍａ）支配，并与ＰＯ３－４－Ｐ和ＣＯＤ等密切相关。
──The present study is based on the analysis of the data collected in ten cruises during the periods of two surveys (from May 1992 to Jan. 1993 to Jan. 1993 and from Aug. 1993 to may 1994). The results show that the number of phytoplankton species in highly eutrophic waters of maluan Bay is less , only 66 species in total and 6-35 species for each cruise. The phytoplankton abundance is high. The mean cell density of phytoplankton from the net samples and the water samples reached 21 386×104 cell/m3 (from May 1992 to Jan. 1993 ) to 110 136×104cell/m3(from Aug. 1993 to May 1994) and 1 150.7cell/cm3 respectively. The mean concentra- tion of chlorophyll a reached 6.67mg/me. Both the species diversity (H')and evenness(J)were low,on 0.78 and 0.28 respectively. The temporal and spatial fluctuation of the cell density of phytoplankton was quite significant, that was dominated mainly by the pennate diatom Nitzschia delicatissima which often occur- ried abundantly in closed waters riched in organic matter and could be taken as an ecologic indicator of highly eutrophic harbour. The existence of good correlation between the cell density of Nitzschia delicatissima and some environmental variables (e.g. PO3-4 -P and COD etc. )and the heterotrophic tendancy of the species are also discussed.
出处
《海洋学报》
CAS
CSCD
北大核心
1998年第1期101-102,共2页
基金
"八五"国家科技攻关项目
关键词
富营养化
浮游植物群
海洋生态
厦门
水域
Eutrophication, phytoplankton community, marine ecology , Xiamen
