148
Table 5.5 Correlation coefficient between metal concentration in ambient media (water and sediment) with accumulated metal in vegetative parts of Avicennia
officinalis
in 2013
Combination
r-value
p-value
Premonsoon
Monsoon
Postmonsoon
Premonsoon
Monsoon
Postmonsoon
Root Zn × Dissolved Zn
0.605
0.794
0.617
p < 0.01
p < 0.01
p < 0.01
Root Zn × Sediment Zn
0.926
0.844
0.933
p < 0.01
p < 0.01
p < 0.01
Stem Zn × Dissolved Zn
0.573
0.729
0.575
p < 0.01
p < 0.01
p < 0.01
Stem Zn × Sediment Zn
0.947
0.844
0.944
p < 0.01
p < 0.01
p < 0.01
Leaf Zn × Dissolved Zn
0.637
0.793
0.674
p < 0.01
p < 0.01
p < 0.01
Leaf Zn × Sediment Zn
0.918
0.793
0.921
p < 0.01
p < 0.01
p < 0.01
Root Cu × Dissolved Cu
0.975
0.904
0.960
p < 0.01
p < 0.01
p < 0.01
Root Cu × Sediment Cu
0.934
0.615
0.891
p < 0.01
p < 0.01
p < 0.01
Stem Cu × Dissolved Cu
0.963
0.814
0.939
p < 0.01
p < 0.01
p < 0.01
Stem Cu × Sediment Cu
0.939
0.940
0.946
p < 0.01
p < 0.01
p < 0.01
Leaf Cu × Dissolved Cu
0.972
0.864
0.942
p < 0.01
p < 0.01
p < 0.01
Leaf Cu × Sediment Cu
0.945
0.946
0.924
p < 0.01
p < 0.01
p < 0.01
Root Pb × Dissolved Pb
0.712
0.840
0.786
p < 0.01
p < 0.01
p < 0.01
Root Pb × Sediment Pb
0.594
0.789
0.695
p < 0.01
p < 0.01
p < 0.01
Stem Pb × Dissolved Pb
0.682
0.768
0.503
p < 0.01
p < 0.01
p < 0.01
Stem Pb × Sediment Pb
0.690
0.691
0.537
p < 0.01
p < 0.01
p < 0.01
Leaf Pb × Dissolved Pb
0.579
0.585
0.575
p < 0.01
p < 0.01
p < 0.01
Leaf Pb × Sediment Pb
0.570
0.522
0.321
p < 0.01
p < 0.01
IS
Root Hg × Dissolved Hg
0.906
0.920
0.865
p < 0.01
p < 0.01
p < 0.01
Root Hg × Sediment Hg
0.492
0.368
0.598
p < 0.05
IS
p < 0.01
Stem Hg × Dissolved Hg
0.908
0.817
0.753
p < 0.01
p < 0.01
p < 0.01
Stem Hg × Sediment Hg
0.489
0.403
0.707
p < 0.01
p < 0.05
p < 0.01
Leaf Hg × Dissolved Hg
0.880
0.632
0.671
p < 0.01
p < 0.01
p < 0.01
Leaf Hg × Sediment Hg
0.554
0.281
0.260
p < 0.01
IS
IS
IS
insignificant
5 Mangroves: A Sink of Heavy Metals