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富营养化湖泊刚毛藻建群特征及其影响因素
Authors
李敦海()
李根保()
+3 more
李莉杰()
李露()
郭亮亮()
Publication date
1 January 2017
Publisher
Abstract
为研究富营养化湖泊刚毛藻建群过程及其影响因素,在草海沿岸带水深为5,25,45,65,85cm处分别放置大理石板作为刚毛藻建群的人工基质,监测人工基质上刚毛藻群落的生物量、藻丝长度以及附着硅藻的密度和组成.结果发现,2周后,水下25cm处的刚毛藻群落的生物量最大,为9.0mg/cm2.4周后,水下5cm处刚毛藻群落的生物量为14.0mg/cm2,是25cm处刚毛藻群落生物量的1.62倍.整个实验期间,水下65,85cm处刚毛藻群落的生物量一直较少,生物量分别为2.86,1.39mg/cm2.相对其它深度,5cm处刚毛藻藻丝长度最长,最高值为11.8cm.在第6周,水下5cm处刚毛藻群落中附着硅藻的密度最大,为7.8×106cell/cm2.分析结果显示,NH4+-N浓度、水下光照强度和SRP浓度是显著影响刚毛藻群落特征(刚毛藻群落生物量、刚毛藻藻丝长度和附着硅藻密度)的因子,而NH4+-N浓度和pH值是影响硅藻群落组成的显著性环境因子
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 23/01/2021