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- W2379891179 abstract "The effect of different densities(392 ind·m~(-2),196 ind·m~(-2),98 ind·m~(-2) and 0 ind·m~(-2)) of Bellamya aeruginosa on the physical and chemical properties of algal bloom water by setting up experimental enclosures in pond were studied.The experiment was carried out from September 14,2009,and lasted for two months.The results showed that in the middle and late stages,water transparency in low,medium and high density groups was above 60 cm,but that in the control group showed no significant change and fluctuated from 29 cm to 40.3 cm.It indicates that B.aeruginosa can increase the secchi depth(SD) of water.Dissolved oxygen(DO) in the treated groups was significantly lower than that in the control group,suggesting that snails would reduce the DO of water.In addition,our results showed that snails reduced the total Chl-a,but not the concentration of nutrients in the water.The downward trend of TN and PO_4~(3-)-P concentrations showed negative correlation (R=-0.9851,P0.05,and R = -0.9678,P0.05) with the snail density.The data(SD,DO,pH,Chl-a,NH_4~+-N,NO_3~--N and PO_4~(3-)-P) were analyzed by the Duncan multiple comparison and cluster analysis methods,and showed that there were significant differences between the control group and treatment group at P0.05 level.Therefore it is suggested that snails can to some extent improve the water quality." @default.
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- W2379891179 date "2010-01-01" @default.
- W2379891179 modified "2023-09-23" @default.
- W2379891179 title "The effect of Bellamy a aeruginosa on the physical and chemical properties of the algal bloom water" @default.
- W2379891179 hasPublicationYear "2010" @default.
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