The competitive relationship between benthic and planktonic algae plays an important role in the structure and function of shallow aquatic ecosystem.Bivalves can affect the planktonic algae biomass and community structure through filter-feeding,thus influencing the results of the competition between benthic and planktonic algae.In order to investigate the effect of filter-feeding bivalves on the competitive relationship between benthic and planktonic algae,we conducted an experiment with two treatments,one with Anodonta woodiana as bivalve treatments and one without A.woodiana as controls.The results showed that A.woodiana significantly reduced the biomass of planktonic algae and increased the biomass of benthic algae.The dominant species of planktonic algae changed from cyanobacteria to diatom in the bivalve treatments.Moreover,the transparency and light intensity over sediment surface in the bivalve treatments were higher than those of controls.Our study demonstrates that bivalves can change the competitive relationship between benthic and planktonic algae and thus may enhance the shift of shallow lakes from a turbid to a clear water state.This research has some implications for restoration and management of eutrophic shallow lakes.
喻晓, 张修峰*, 刘正文. 背角无齿蚌(Anodonta woodiana)对浅水系统底栖和浮游藻类竞争关系的影响[J]. , 2012, 31(3): 301-305.
YU Xiao, ZHANG Xiu-feng, LIU Zheng-wen. The effect of Anodonta woodiana on the competitive relationship between benthic and planktonic algae in shallow aquatic ecosystem. , 2012, 31(3): 301-305.
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