褶纹冠蚌和背角无齿蚌对水体营养盐和浮游植物的影响  

The effects of Cristaria plicata and Anodonta woodiana on nutrients and phytoplankton in a tropical eutrophic reservoir:A microcosm experiment

作　　者：张帅[1] 陈修康[1] 肖利娟[1] 胡韧[1] 

机构地区：[1]暨南大学水生生物研究所,广州510632

出　　处：《生态科学》2011年第3期280-287,共8页Ecological Science

基　　金：广东省水利厅富营养化生物控制项目;国家863项目(2008AA06A413)

摘　　要：2009年5月31日-6月20日在广东省大沙河水库利用微型生态系统比较不同放养密度的褶纹冠蚌(Cristaria plicata)和背角无齿蚌(Anodonta woodiana)对水体氮、磷及浮游植物的影响,探讨两种蚌在控制南亚热带水库富营养化水体藻类水华上的可行性。实验结果表明,在褶纹冠蚌和背角无齿蚌处理组中,总氮、总磷和叶绿素a浓度显著增加,而铵氮的浓度显著下降;褶纹冠蚌和背角无齿蚌导致了浮游植物群落组成结构的改变和数量的增加,实验过程中绿藻所占的比例迅速上升。两种蚌之间没有显著的差异,只是在不同的作用强度下,时间上的响应不同。综合实验结果,褶纹冠蚌和背角无齿蚌难以有效地运用于我国华南地区水库的水质改善与富营养化控制。A microcosm experiment was conducted to study the impacts of different cultivation density of Cristaria plicata and Anodonta woodiana on nutrients and phytoplankton in a eutrophic reservoir （Dashahe Reservoir, South China）, from May 31 to June 20, 2009. The experiment was aimed to investigate the possibility of applying bivalve in controlling algal biomass in warm water bodies. The results showed that the concentration of total nitrogen, total phosphorus and chlorophyll increased and ammonia decreased in the two bivalve species treatments. Evident changes in phytoplankton were observed not only in biomass but also in community structure in terms of species composition. The percentage of Chlorophyte increased rapidly throughout the experiment. No significant difference existed between the two bivalve species groups, except that the time response differed under different effect intensity. The results suggest that C plicata and A. woodiana may not be used as efficient manipulated organism to control eutrophication and improve water quality in reservoirs of South China.

关 键 词：褶纹冠蚌 背角无齿蚌 微型生态系统 富营养化 热带亚热带水库 

分 类 号：Q89[生物学] Q14