The authors regret that Table 6 was incorrect in their original paper and apologise for any inconvenience caused. The correct version of the table is given below and has been updated online.

Table 6

Pearson correlation among heavy metals in submerged plants in Xuanwu Lake

CrMnNiCuZnCdPd
Cr 1       
Mn −0.152 1      
Fe 0.049 −0.067      
Ni 0.011 0.435** 1     
Cu 0.058 0.369** 0.870** 1    
Zn 0.152 0.745** 0.459** 0.470** 1   
Cd −0.050 0.609** 0.461** 0.368** 0.574 1  
Pd −0.188 0.090 −0.258 0.246 −0.331** 0.157 1 
CrMnNiCuZnCdPd
Cr 1       
Mn −0.152 1      
Fe 0.049 −0.067      
Ni 0.011 0.435** 1     
Cu 0.058 0.369** 0.870** 1    
Zn 0.152 0.745** 0.459** 0.470** 1   
Cd −0.050 0.609** 0.461** 0.368** 0.574 1  
Pd −0.188 0.090 −0.258 0.246 −0.331** 0.157 1 

**indicates significant correlation at the 0.01 level.

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