广西科学2016，Vol.23Issue(2)：144-149,6.
东洞庭湖浮游藻类优势种群对主要水环境因子的生态适应性
Ecological Suitability of Phytoplankton Dominant Spe-cies to Key Water Environmental Factors in East Dongting Lake
摘要
Abstract
Objective]This research focused on the ecological suitability of phytoplankton domi-nant species to key water environmental factors.[Methods]According to the importance value (IV),which covers the density,biomass and frequency,dominant species were screened to char-acterize phytoplankton community structure. Key water environmental parameters were screened from 1 8 water environmental parame-ters by factor analysis.Redundancy analysis (RDA)was applied to analyze the relationship between the dominant species and key water en-vironmental factors.[Results]The main features of the relationship between dominant species and water environmental factors were as follows:Water temperature (WT)and dissolved oxygen (DO)were the key factors influencing Synedra acusvar.Melosira varians and Mavicula prptracta may serve as nice indicators of organic pol-lution.Cymatopleura solea was fit for high concentration of ammonia nitrogen (NH3-N). Merismopedia tenuissima was sensitive to anionic surface active agents (a-SAA),however, Stauroneis anceps showed higher tolerance to this factor.Synedra ulna was more special in the needs of environmental conditions compared with other phytoplankton.Most dominant species favored slight alkalinity.Though usually being an important influence factor for phytoplankton community structure the cenduclivity was not a dominant influencer on the phytoplankton com-munity structure in East Dongting Lake.[Conclusion]Different phytoplankton dominant species showed their specific ecological suitability to the environmental factors in East Dongting Lake.关键词
浮游藻类/水环境因子/冗余分析(RDA)/生态适应性/东洞庭湖Key words
phytoplankton/water environmental factors/redundancy analysis (RDA)/ecological suitability/East Dongting Lake分类
农业科技引用本文复制引用
张琦,傅园园,黄河仙,罗岳平,陈贝贝,胡树林,刘应迪..东洞庭湖浮游藻类优势种群对主要水环境因子的生态适应性[J].广西科学,2016,23(2):144-149,6.基金项目
湖南省生态学重点学科建设项目（0713），湖南省生物发育工程及新产品研发协同创新中心项目（20134486）和湖南省环保科技资金2014年项目资助。 （）
