南四湖和东平湖鼓藻种群特征及其与环境因子的相关性  

Desmid community characteristics and its relationship with environmental variables in Nansi Lake and Dongping Lake

作　　者：冯亚威 侯坤[2] 裴海燕[1,3] 胡文容[1,3] 任颖[1] 韦洁琳 

机构地区：[1]山东大学环境科学与工程学院,济南250010 [2]国务院南水北调办公室政策及技术研究中心,北京100053 [3]山东省环境科学工程技术研究中心,济南250061

出　　处：《生态学杂志》2015年第6期1738-1746,共9页Chinese Journal of Ecology

基　　金：国家自然科学基金优秀青年基金项目(51322811);国家自然科学基金项目(51478251);国务院南水北调工程建设委员会办公室政策及技术研究中心项目资助

摘　　要：鼓藻类是绿藻门中种类多样、形态复杂的一个类群,对水环境的变化很敏感,对水质监测、保护以及淡水水体的营养型分析有重要作用。2010年5月—2013年5月,对山东南四湖和东平湖的鼓藻类进行研究,每月采样一次,采样点设在水下0.5 m处。南四湖和东平湖分别检出鼓藻3属12种、4属15种。夏秋季节(6—11月)藻细胞密度高于其他月份,最大值分别为50.0×104cells·L-1、55.9×104cells·L-1。鼓藻属为两湖泊优势种属。冗余分析与皮尔逊相关性分析结果表明:影响南四湖鼓藻分布的主要环境因子为p H和总氮,影响东平湖鼓藻分布的主要环境因子为温度、溶解氧及化学耗氧量。南四湖和东平湖检出的鼓藻种类中,主要为贫营养水体指示种,并且检出频率低。Desmids,which are a group of Chlorophyta with diverse species and complex morpha,play important roles in water quality monitoring,protection,and nutritional analysis because they are highly sensitive to environmental changes. Desmids in Nansi Lake and Dongping Lake from May 2010 to May 2013 were collected monthly at a depth of 0.5 m below the surface. Three genera,12 species were identified in Nansi Lake and 4 genera,15 species in Dongping Lake. The abundance of desmids in summer and autumn（ from June to November） was higher than that in other months,with the maximum of 50.0×104cells·L-1and 55.9×104cells·L-1,respectively.Species of Cosmarium were dominant in both lakes. The results of redundancy analysis（ RDA）and Pearson correlation analysis showed that the major environmental factors influencing the distribution of desmids in Nansi Lake were p H and TN,and those in Dongping Lake were temperature,dissolved oxygen,and chemical oxygen demand. Desmids identified in both lakes were mainly indicative species of oligotrophic water,with a low detection frequency.

关 键 词：南四湖 东平湖 鼓藻类 环境因子 相关性 

分 类 号：X524[环境科学与工程—环境工程]