东江惠州河流段人工基质附着硅藻群落的季节性动态

被引：14

作者：

陈向

刘静

何琦

林秋奇

韩博平

韦桂峰

机构：

[1] 暨南大学水生生物研究中心

来源：

湖泊科学 | 2012年 / 24卷 / 05期

关键词：

附着硅藻; 季节性变化; 人工底质; 东江;

D O I：

暂无

中图分类号：

Q948.8 [水生植物学];

学科分类号：

071012 ; 0713 ;

摘要：

硅藻群落结构特征是反映河流水生态状态的重要生物指标,但我国多数河流中还缺少硅藻种类组成与季节变化的基本数据.2010年用瓷砖片作为人工基质研究东江惠州河流段附着硅藻群落结构的季节性变化,共鉴定出附着硅藻40属153种(包括亚种和变种),主要的优势属有曲壳藻属(Achnanthidium)、异极藻属(Gomphonema)、直链藻属(Melosira)、舟形藻属(Navicula)、菱形藻属(Nitzschia)、脆杆藻属(Synedra)等.Gomphonema parvulum和Nitzschia palea为该河流段的广泛性藻种,且相对丰度的季节性变化明显.RDA分析表明,水温、DO、NH4+-N、PO34--P、电导率、pH值等对附着硅藻群落结构有重要影响.在丰水期,水量对于运动能力较强的N.palea的相对丰度具有明显的影响.

引用

页码：723 / 731

页数：9

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