149
Table 5.6 Correlation coefficient between metal concentration in ambient media (water and sediment) with accumulated metal in vegetative parts of Avicennia
officinalis
in 2014
Combination
r-value
p-value
Premonsoon
Monsoon
Postmonsoon
Premonsoon
Monsoon
Postmonsoon
Root Zn × Dissolved Zn
0.970
0.957
0.926
p < 0.01
p < 0.01
p < 0.01
Root Zn × Sediment Zn
0.924
0.739
0.941
p < 0.01
p < 0.01
p < 0.01
Stem Zn × Dissolved Zn
0.983
0.979
0.955
p < 0.01
p < 0.01
p < 0.01
Stem Zn × Sediment Zn
0.947
0.819
0.944
p < 0.01
p < 0.01
p < 0.01
Leaf Zn × Dissolved Zn
0.708
0.734
0.706
p < 0.01
p < 0.01
p < 0.01
Leaf Zn × Sediment Zn
0.770
0.457
0.701
p < 0.01
p < 0.05
p < 0.01
Root Cu × Dissolved Cu
0.968
0.939
0.942
p < 0.01
p < 0.01
p < 0.01
Root Cu × Sediment Cu
0.912
0.894
0.897
p < 0.01
p < 0.01
p < 0.01
Stem Cu × Dissolved Cu
0.934
0.568
0.962
p < 0.01
p < 0.01
p < 0.01
Stem Cu × Sediment Cu
0.886
0.434
0.940
p < 0.01
p < 0.05
p < 0.01
Leaf Cu × Dissolved Cu
0.865
0.946
0.908
p < 0.01
p < 0.01
p < 0.01
Leaf Cu × Sediment Cu
0.835
0.912
0.818
p < 0.01
p < 0.01
p < 0.01
Root Pb × Dissolved Pb
0.626
0.841
0.800
p < 0.01
p < 0.01
p < 0.01
Root Pb × Sediment Pb
0.764
0.760
0.716
p < 0.01
p < 0.01
p < 0.01
Stem Pb × Dissolved Pb
0.611
0.772
0.491
p < 0.01
p < 0.01
p < 0.05
Stem Pb × Sediment Pb
0.643
0.667
0.459
p < 0.01
p < 0.01
p < 0.05
Leaf Pb × Dissolved Pb
0.477
0.589
0.579
p < 0.05
p < 0.01
p < 0.01
Leaf Pb × Sediment Pb
0.349
0.515
0.352
IS
p < 0.01
IS
Root Hg × Dissolved Hg
0.834
0.922
0.880
p < 0.01
p < 0.01
p < 0.01
Root Hg × Sediment Hg
0.831
0.806
0.799
p < 0.01
p < 0.01
p < 0.01
Stem Hg × Dissolved Hg
0.877
0.915
0.920
p < 0.01
p < 0.01
p < 0.01
Stem Hg × Sediment Hg
0.848
0.814
0.871
p < 0.01
p < 0.01
p < 0.01
Leaf Hg × Dissolved Hg
0.943
0.611
0.741
p < 0.01
p < 0.01
p < 0.01
Leaf Hg × Sediment Hg
0.802
0.442
0.608
p < 0.01
p < 0.05
p < 0.01
IS
insignificant
5 Mangroves: A Sink of Heavy Metals