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生态学杂志 ›› 2020, Vol. 39 ›› Issue (10): 3363-3370.doi: 10.13292/j.1000-4890.202010.008

• 研究报告 • 上一篇    下一篇

贵州高原红枫水库浮游植物中脂肪酸组成特征及影响因素

金爽1,2,李秋华1,2*,齐继清1,2,王星1,2,旷攀1,2,陈文生1   

  1. (1贵州师范大学贵州省山地环境信息系统和生态环境保护重点实验室, 贵阳 550001;2贵州省国际合作研究基地水生态国际联合研究中心, 贵阳 550001)
  • 出版日期:2020-10-10 发布日期:2021-04-09

Fatty acid composition and affecting factors of phytoplankton in Hongfeng Reservoir in Guizhou Plateau.

JIN Shuang1,2, LI Qiu-hua1,2*, QI Ji-qing1,2, WANG Xing1,2, KUANG Pan1,2, CHEN Wen-sheng1   

  1. (1Guizhou Normal University, Guizhou Province Key Laboratory of Mountain Environmental Information System and Ecological Environment Protection, Guiyang 550001, China; 2International Joint Research Center for Water Ecology, Guizhou International Cooperative Research Base, Guiyang 550001, China).
  • Online:2020-10-10 Published:2021-04-09

摘要: 为探究水体浮游植物脂肪酸组成特征及影响因素,对采集于贵阳红枫水库3个采样点的浮游植物脂肪酸进行了研究。结果表明:红枫水库浮游植物以蓝藻为主;脂肪酸组成中饱和脂肪酸(SFA)占主导地位,二十二碳六烯酸(DHA)与二十碳五烯酸(EPA)含量均比较低。水体营养水平能影响脂肪酸组成,富营养化水平越高,SFA含量越高,单不饱和脂肪酸(MUFA)与多不饱和脂肪酸(PUFA)含量越低;脂肪酸组成特征能反映浮游植物物种组成,DHA与蓝藻呈显著负相关(R=-0.87,P<0.05,n=6),DHA含量越高的水体蓝藻含量越低;部分PUFA含量与蓝藻含量呈显著正相关(R=0.89,P<0.05,n=6)。

关键词: 脂肪酸, 浮游植物, 影响因素, 红枫水库

Abstract: We investigated the fatty acid composition of phytoplankton and affecting factors with samples collected from three sites in Hongfeng Reservoir, Guiyang. Cyanobacteria dominated the phytoplankton group. Saturated fatty acids (SFA) dominated total fatty acid contents, with low contents of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). With increasing eutrophication level, the contents of SFA increased, and the contents of monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) decreased. The composition of fatty acids can be used as indicator of species composition. DHA content was negatively related with cyanobacteria content (R=-0.87, P<0.05,n=6). The content of some PUFAs was positively related with cyanobacteria content (R=0.89,P<0.05, n=6).

Key words: fatty acid, phytoplankton, affecting factor, Hongfeng Reservoir.