Kollidam estuary
Kollidam estuary
|
Name of the River
|
Cauvery
|
|
Place
|
Kollidam
|
|
District
|
Nagapattinam
|
|
State
|
Tamil Nadu
|
|
Latitude
|
11° 29’N
|
|
Longitude
|
79° 50’E
|
|
Important land marks
|
Pazhayaru
|
|
Length
|
2 km
|
|
Type of the Estuary
|
Bar-built
|
|
Water temperature
|
33.1
|
|
Nature of the Substratum
|
Muddy
|
|
pH
|
8.2
|
|
Salinity
|
29.2 ppt
|
|
Dissolved oxygen
|
3.94
|
|
Predominat benthic fauna
|
Gastropod, Bivalves
|
|
Predominat Phytoplankton
|
Stephanopyxis palmeriana, Chaetoceros convolutum, C. didymus, Bellerochea malleus, Coscinodiscus concinnus, Asterionella japonica
|
|
Commercially important shellfishes
|
Crassostrea madrasensis
|
|
Commercially important Finfishes
|
Mugil cephalus, Thryssa sp., Sardinella sp.
|
Image
Physico-chemical parameters
Variations in mean monthly values of nutrient and physic-chemical parameters at station-2
Mean concentrations of Cadmium (mg/kg) in the sediment samples of 15 sites of Kollidam estuary
|
Sl. No.
|
Site/ Month
|
January
|
March
|
May
|
July
|
September
|
November
|
|
1
|
KS-I
|
0.28±0.03
|
0.31±0.03
|
0.27±0.01
|
0.20±0.01
|
0.49±0.02
|
0.39±0.013
|
|
2
|
KS-II
|
0.57±0.05
|
0.49±0.08
|
0.45±0.04
|
0.39±0.04
|
0.72±0.09
|
0.62±0.06
|
|
3
|
KS-III
|
0.60±0.04
|
0.51±0.03
|
0.47±0.02
|
0.39±0.01
|
0.74±0.05
|
0.65±0.04
|
|
4
|
KS-IV
|
0.8±0.07
|
0.71±0.04
|
0.61±0.03
|
0.45±0.03
|
1.03±0.27
|
0.91±0.05
|
|
5
|
KS-V
|
0.99±0.15
|
0.92±0.04
|
0.76±0.03
|
0.67±0.50
|
1.29±0.07
|
1±0.34
|
|
6
|
KS-VI
|
1.31±0.05
|
1.22±0.07
|
1.12±0.06
|
0.81±0.04
|
1.42±0.08
|
1.327±0.06
|
|
7
|
KS-VII
|
1.65±0.08
|
1.54±0.08
|
1.44±0.13
|
1.12±0.25
|
1.76±0.17
|
1.71±0.07
|
|
8
|
KS-VIII
|
1.83±0.10
|
1.82±0.09
|
1.73±0.09
|
1.12±0.08
|
1.90±0.15
|
1.87±0.11
|
|
9
|
KS-IX
|
1.81±0.12
|
1.64±0.38
|
1.60±0.30
|
1.55±0.22
|
1.88±0.21
|
1.84±0.21
|
|
10
|
KS-X
|
1.47±0.16
|
1.34±0.14
|
1.23±0.41
|
0.97±0.11
|
1.76±0.20
|
1.62±0.17
|
|
11
|
KS-XI
|
1.26±0.09
|
1.00±0.200
|
0.87±0.13
|
0.82±0.07
|
1.37±0.10
|
1.34±0.12
|
|
12
|
KS-XII
|
1.24±0.15
|
1.1±0.11
|
1.03±0.20
|
0.77±0.08
|
1.43±0.24
|
1.36±0.15
|
|
13
|
KS-XIII
|
0.90±0.11
|
0.89±0.09
|
0.77±0.08
|
0.58±0.06
|
1.11±0.12
|
0.98±0.10
|
|
14
|
KS-XIV
|
0.73±0.06
|
0.67±0.08
|
0.45±0.35
|
0.41±0.04
|
0.88±0.10
|
0.80±0.03
|
|
15
|
KS-XV
|
0.32±0.03
|
0.29±0.03
|
0.24±0.02
|
0.19±0.02
|
0.47±0.04
|
0.43±0.04
|
Mean concentrations of Chromium (mg/kg) in the sediment samples of 15 sites of Kollidam estuary
|
Sl. No.
|
Site/ Month
|
January
|
March
|
May
|
July
|
September
|
November
|
|
1
|
KS-I
|
11.23±0.68
|
12.23±0.72
|
12.23±0.72
|
17.03±1.9
|
18.4±1.14
|
20.26±1.79
|
|
2
|
KS-II
|
24.46±1.45
|
25.5±1.52
|
25.5±1.52
|
29.6±1.82
|
31.73±1.97
|
34.33±2.8
|
|
3
|
KS-III
|
36.66±2.14
|
37.86±2.38
|
37.86±2.38
|
42±3.04
|
44±3.04
|
46±3.04
|
|
4
|
KS-IV
|
49.93±2.94
|
53±3.12
|
53±3.12
|
55.73±3.7
|
60.7±4.2
|
64.46±6.71
|
|
5
|
KS-V
|
65.26±3.88
|
67.13±4.03
|
67.13±4.03
|
73.53±4.5
|
76.03±5.11
|
77.56±4.83
|
|
6
|
KS-VI
|
80.4±5.7
|
80.86±5.14
|
80.86±5.14
|
84.66±5.3
|
88.4±7.23
|
88.66±5.35
|
|
7
|
KS-VII
|
85.26±5.1
|
87.13±5.35
|
87.13±5.35
|
96.13±12.3
|
95.4±11.45
|
94.83±12.8
|
|
8
|
KS-VIII
|
86.41±7.23
|
87.7±6.37
|
87.7±6.37
|
91.5±6.08
|
94.07±10.4
|
91.5±8.53
|
|
9
|
KS-IX
|
81.38±9.32
|
83.74±8.96
|
83.74±8.96
|
91.97±8.1
|
89.11±7.76
|
91.86±9.07
|
|
10
|
KS-X
|
75.81±8.66
|
76.13±8.87
|
76.13±8.87
|
80.23±8.9
|
82.49±8.96
|
85.9±7.99
|
|
11
|
KS-XI
|
62.2±7.12
|
67.83±5.92
|
67.83±5.92
|
71.46±6.7
|
72.03±8.15
|
73.49±8.61
|
|
12
|
KS-XII
|
47.03±4.88
|
48.67±8.75
|
48.67±8.75
|
57.86±5.4
|
62±7.01
|
61.04±5.56
|
|
13
|
KS-XIII
|
35.08±3.95
|
36±4.09
|
36±4.09
|
43.3±5.43
|
42.6±4.26
|
43.62±5.06
|
|
14
|
KS-XIV
|
23.31±2.66
|
24.62±2.75
|
24.62±2.75
|
28.26±2.7
|
30.06±3.5
|
32±3.73
|
|
15
|
KS-XV
|
10.7±1.22
|
11.59±1.33
|
11.59±1.33
|
18.7±4.75
|
19.16±2.51
|
19.62±2.06
|
Mean concentrations of Copper (mg/kg) in the sediment samples of 15 sites of Kollidam estuary
|
Sl. No.
|
Site/ Month
|
January
|
March
|
May
|
July
|
September
|
November
|
|
1
|
KS-I
|
13.25±0.82
|
9.17±0.54
|
10.73±0.66
|
12.9±0.78
|
14.2±0.79
|
15.9±0.87
|
|
2
|
KS-II
|
18.36±1.10
|
11.24±0.69
|
11.83±0.64
|
18.77±1.12
|
19.63±1.12
|
20.99±1.26
|
|
3
|
KS-III
|
23.46±1.36
|
19.4±1.17
|
20.63±1.56
|
23.97±1.36
|
28.78±1.59
|
27.43±1.70
|
|
4
|
KS-IV
|
31.7±1.92
|
27.5±1.60
|
29.84±1.83
|
32.03±1.85
|
33.72±2.04
|
33.4±1.90
|
|
5
|
KS-V
|
34.73±2.12
|
32.16±1.94
|
36.06±2.05
|
37.96±2.13
|
39.16±2.31
|
41.93±2.57
|
|
6
|
KS-VI
|
45.56±2.76
|
43.96±2.68
|
42.96±2.68
|
47±2.879
|
48.83±2.81
|
50.16±2.92
|
|
7
|
KS-VII
|
51.5±3.04
|
48±2.87
|
51.91±3.07
|
52.26±3.78
|
52±3.25
|
53±3.12
|
|
8
|
KS-VIII
|
48.9±5.71
|
46.66±5.32
|
47.5±7.3
|
49.4±5.63
|
49.36±5.83
|
50.6±5.81
|
|
9
|
KS-IX
|
43.13±4.96
|
40.79±4.73
|
39.87±0.45
|
44.64±5.14
|
47.36±4.89
|
50.4±5.2
|
|
10
|
KS-X
|
35.98±4.13
|
32.96±3.84
|
32.16±3.75
|
37.06±4.20
|
37.96±4.29
|
39.7±4.67
|
|
11
|
KS-XI
|
29.03±3.26
|
27.16±3.15
|
27.46±2.57
|
29.76±3.40
|
29.82±3.40
|
31.83±3.61
|
|
12
|
KS-XII
|
22.3±2.6
|
18.43±2.13
|
19.57±2.71
|
23.17±2.66
|
26.03±2.91
|
27±3.03
|
|
13
|
KS-XIII
|
18.31±1.72
|
14.56±1.67
|
11.5±1.47
|
18.76±2.11
|
19.86±2.28
|
26.09±2.91
|
|
14
|
KS-XIV
|
12.32±1.43
|
8.72±1.02
|
9.11±1.06
|
10.96±1.26
|
15.2±1.65
|
13.5±1.47
|
|
15
|
KS-XV
|
12.7±1.21
|
9.27±0.83
|
10.79±0.87
|
9.68±0.87
|
13.91±0.89
|
16.8±1.13
|
Mean concentrations of Iron (mg/kg) in the sediment samples of 15 sites of Kollidam estuary
|
Sl. No.
|
Site/ Month
|
January
|
March
|
May
|
July
|
September
|
November
|
|
1
|
KS-I
|
64.3±3.87
|
22.5±1.4
|
35.74±2.05
|
84.65±5.01
|
84.65±5.01
|
112.37±6.82
|
|
2
|
KS-II
|
450.12±1.7
|
259±16.64
|
298±18.24
|
387.47±23.1
|
387.47±23.1
|
634.25±20.7
|
|
3
|
KS-III
|
1002±59.0
|
917±16.82
|
889.67±5.3
|
1023.33±6.4
|
1023.33±6.4
|
1221.67±7.5
|
|
4
|
KS-IV
|
1326.6±7.0
|
1236.17±7.5
|
1350±78.9
|
1503±91.24
|
1503±91.24
|
1731.31±1.0
|
|
5
|
KS-V
|
1842.3±1.0
|
1672±103.06
|
1726.43±1
|
1967±121.6
|
1967±121.6
|
2234±134.8
|
|
6
|
KS-VI
|
2160±12.6
|
2103±125.79
|
2074.7±1.2
|
2234±140
|
2234±140
|
2395.67±1.4
|
|
7
|
KS-VII
|
2503±15.2.
|
2379±147.98
|
2436.1±1.4
|
2669.67±1.6
|
2669.67±1.6
|
2589±166.4
|
|
8
|
KS-VIII
|
2422.33±2
|
2341.45±2.6
|
2268.3±2.5
|
2452.33±2.8
|
2452.33±2.8
|
2647.22±3.0
|
|
9
|
KS-IX
|
2163.3±2.0
|
2059.67±2.3
|
2016.4±2.2
|
1973±225.3
|
1973±225.3
|
2202.53±2.4
|
|
10
|
KS-X
|
1833±19.9
|
1719±190.78
|
1645.8±1.8
|
1928±208.8
|
1928±208.8
|
2122.33±2.4
|
|
11
|
KS-XI
|
1346.3±1.4
|
1261.67±1.4
|
1224.6±1.3
|
1433±15.6
|
1433±15.6
|
1651.33±17
|
|
12
|
KS-XII
|
1353±11.2
|
1270±97.86
|
1233±95.3
|
1385±112.6
|
1385±112.6
|
1586.33±1.4
|
|
13
|
KS-XIII
|
970±112.6
|
938.17±10.1
|
886.63±6.6
|
820.97±89.6
|
820.97±89.6
|
1161.67±1.2
|
|
14
|
KS-XIV
|
368.66±4.2
|
279.37±31.5
|
283.61±3.2
|
422.31±45.6
|
422.31±45.6
|
580±60.82
|
|
15
|
KS-XV
|
53.34±6.21
|
21.42±2.48
|
61.27±6.65
|
80.27±8.96
|
80.27±8.96
|
136±15.62
|
Mean concentrations of Lead (mg/kg) in the sediment samples of 15 sites of Kollidam estuary
|
Sl. No.
|
Site/ Month
|
January
|
March
|
May
|
July
|
September
|
November
|
|
1
|
KS-I
|
20.63±1.80
|
19.43±1.93
|
18.27±1.23
|
20.5±1.56
|
21.7±2.25
|
22.06±2.09
|
|
2
|
KS-II
|
31.36±1.79
|
24.04±1.86
|
23.51±2.41
|
27.9±2.79
|
33.77±3.23
|
34.86±2.845
|
|
3
|
KS-III
|
39.0±3.15
|
36.1±1.81
|
32.4±3.92
|
43.67±4.81
|
46.71±4.31
|
45.53±4.110
|
|
4
|
KS-IV
|
52.9±5.21
|
46.29±2.81
|
41.06±4.9
|
53.83±5.44
|
57.19±5.92
|
55.9±4.1
|
|
5
|
KS-V
|
64.16±4.12
|
62.7±3.65
|
55.17±3.37
|
76.97±4.74
|
69.24±4.14
|
65.33±3.95
|
|
6
|
KS-VI
|
81.8±5.07
|
77.35±4.54
|
64.63±3.91
|
91.51±5.53
|
89.47±5.21
|
84.86±5.22
|
|
7
|
KS-VII
|
92.73±5.41
|
90.18±5.53
|
90.84±5.26
|
93.27±5.44
|
94.31±5.80
|
95.4±5.46
|
|
8
|
KS-VIII
|
89.16±10.43
|
87.23±10.20
|
86.46±9.92
|
88.87±10.31
|
91.77±10.96
|
89.5±10.50
|
|
9
|
KS-IX
|
77.7±8.49
|
77.0±8.1
|
68.86±8.00
|
79.4±9.73
|
85.18±9.04
|
80.73±9.33
|
|
10
|
KS-X
|
61.08±6.31
|
59.19±6.82
|
53.43±6.13
|
62.1±7.19
|
67.62±7.92
|
65.18±5.78
|
|
11
|
KS-XI
|
49.53±5.71
|
44.6±5.2
|
41.47±4.90
|
50.28±5.80
|
66.59±7.42
|
53.95±4.56
|
|
12
|
KS-XII
|
40.81±4.80
|
35±4.11
|
34±3.91
|
41.967±4.80
|
46.75±5.24
|
45.16±3.96
|
|
13
|
KS-XIII
|
30.67±2.10
|
26.27±2.20
|
23.6±2.30
|
26.47±2.20
|
32.56±3.41
|
30.9±2.89
|
|
14
|
KS-XIV
|
29.87±2.02
|
26.52±2.39
|
23.18±2.09
|
30.13±2.84
|
34.39±2.75
|
31.9±3.12
|
|
15
|
KS-XV
|
20.17±2.11
|
19.1±2.1
|
19.23±1.93
|
23.83±3.40
|
22.6±2.34
|
21.26±2.84
|
References
Patterson Edward, J.K. and K. Ayyakkannu, 1991. Studies on the ecology of plankton community of Kollidam estuary, southeast coast of India: I. Phytoplankton. Mahasagar, 24(2): 89–97.
Shameem Rani, K., 2015. Licensed Under Creative Commons Attribution CC BY Assessment of Heavy Metals Contamination Level in Estuarine Sea Sediment from Kollidam, India. International Journal of Science and Research (IJSR), 4(3): ISSN (Online): 2319-7064