146
Table 5.3 Correlation coefficient between metal concentration in ambient media (water and sediment) with accumulated metal in vegetative parts of Avicennia
marina
in 2013
Combination
r-value
p-value
Premonsoon
Monsoon
Postmonsoon
Premonsoon
Monsoon
Postmonsoon
Root Zn × Dissolved Zn
0.976
0.949
0.927
p < 0.01
p < 0.01
p < 0.01
Root Zn × Sediment Zn
0.915
0.767
0.940
p < 0.01
p < 0.01
p < 0.01
Stem Zn × Dissolved Zn
0.979
0.974
0.946
p < 0.01
p < 0.01
p < 0.01
Stem Zn × Sediment Zn
0.949
0.795
0.947
p < 0.01
p < 0.01
p < 0.01
Leaf Zn × Dissolved Zn
0.877
0.727
0.821
p < 0.01
p < 0.01
p < 0.01
Leaf Zn × Sediment Zn
0.840
0.583
0.854
p < 0.01
p < 0.01
p < 0.01
Root Cu × Dissolved Cu
0.910
0.921
0.897
p < 0.01
p < 0.01
p < 0.01
Root Cu × Sediment Cu
0.940
0.920
0.897
p < 0.01
p < 0.01
p < 0.01
Stem Cu × Dissolved Cu
0.917
0.949
0.956
p < 0.01
p < 0.01
p < 0.01
Stem Cu × Sediment Cu
0.943
0.931
0.956
p < 0.01
p < 0.01
p < 0.01
Leaf Cu × Dissolved Cu
0.957
0.898
0.911
p < 0.01
p < 0.01
p < 0.01
Leaf Cu × Sediment Cu
0.950
0.922
0.876
p < 0.01
p < 0.01
p < 0.01
Root Pb × Dissolved Pb
0.520
0.683
0.414
p < 0.01
p < 0.01
p < 0.05
Root Pb × Sediment Pb
0.362
0.580
0.498
IS
p < 0.01
p < 0.05
Stem Pb × Dissolved Pb
0.523
0.624
0.733
p < 0.01
p < 0.01
p < 0.01
Stem Pb × Sediment Pb
0.542
0.698
0.862
p < 0.01
p < 0.01
p < 0.01
Leaf Pb × Dissolved Pb
0.403
0.452
0.414
p < 0.05
p < 0.05
p < 0.05
Leaf Pb × Sediment Pb
0.255
0.437
0.487
IS
p < 0.05
p < 0.05
Root Hg × Dissolved Hg
0.906
0.920
0.920
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
0.237
0.260
p < 0.01
IS
IS
IS
insignificant
5 Mangroves: A Sink of Heavy Metals