Table 1. Temporal variations of
Abiotic factors
|
|
|
|
|
Factors |
Station I |
Station II |
|
|
|
|
|
Rainfall (mm) |
204.5 ± 160.4 |
204.5 ± 160.4 |
|
Water
temperature (0C) |
27.2 ± 4.6 |
27.4 ± 5.1 |
|
pH |
6.89 ± 0.18 |
6.93 ± 0.21 |
|
Transparency
(cm) |
51.9 ± 26.2 |
52.7 ±
25.3 |
|
Specific
Conductivity (µS/cm) |
99.2 ± 13.2 |
96.8 ±
15.5 |
|
Dissolved
oxygen (mg/l) |
6.7 ± 1.6 |
7.0 ± 1.1 |
|
Free CO2
(mg/l) |
7.2 ± 2.1 |
6.8 ±
1.9 |
|
Alkalinity
(mg/l) |
66.3 ± 12.1 |
68.9 ±
10.3 |
|
Hardness
(mg/l) |
62.1 ± 9.9 |
61.2 ±
12.3 |
|
Calcium
(mg/l) |
20.1 ± 2.2 |
22.1 ± 1.8 |
|
Magnesium
(mg/l) |
4.0 ± 0.7 |
4.2 ±
0.9 |
|
Chloride
(mg/l) |
34.6 ± 5.2 |
35.1 ±
5.0 |
|
Phosphate
(mg/l) |
0.18 ± 0.07 |
0.19 ±
0.10 |
|
Sulphate
(mg/l) |
10.2 ± 3.2 |
9.9 ± 3.4 |
|
Nitrate (mg/l) |
0.72 ± 0.12 |
0.74 ± 0.14 |
|
B.O.D5 (mg/l) |
3.11 ± 0.59 |
3.21 ± 0.46 |
|
Dissolved
Organic Matter (mg/l) |
3.84 ± 0.80 |
3.90 ± 0.64 |
|
Total
dissolved Solids (mg/l) |
2.37 ± 0.29 |
2.57 ± 0.30 |
Table 2. Temporal variations of Microcrustacea of Deepor Beel
|
QUALITATIVE |
Station I |
Station II |
|
Microcrustaceans 49 species |
22-45 (34 ± 6) |
25-46 (38 ± 6) |
|
Cladocera 45 species |
17-41 (29 ± 6) |
20-41 (32 ± 6) |
|
Community similarity (%) |
62.3-93.0 |
63.8-98.9 |
|
QUANTITATIVE |
|
|
|
Zooplankton
(n/l) |
239-657 (475 ± 114) |
255-687 (459 ± 128) |
|
Microcrustaceans (n/l) Percentage |
120-305 (216 ± 53) 29.8 -53.1 (45.6 ±
5.8) |
138-322 (209 ± 51) 43.9-58.6 (50.8 ±
4.5) |
|
Species Diversity |
2.223-3.336 (2.975
± 0.310) |
2.386-3.348 (3.022
± 0.277) |
|
Dominance |
0.087-0.457 (0.172
± 0.097) |
0.098-0.435 (0.185
± 0.084) |
|
Evenness |
0.712-0.931 (0.845
± 0.056) |
0.741-0.914 (0.835
± 0.052) |
|
Different Groups |
|
|
|
Cladocera
(n/l) Percentage |
43-252 (142 ± 59) 33.9 – 82.6 (63.0 ± 13.6) |
56 - 233 (142 ± 48) 40.6 – 72.4 (60.5 ±
9.1) |
|
Species Diversity |
2.525-3.141 (2.885 ± 0.259) |
2.315-3.334 (2.973 ± 0.246) |
|
Dominance |
0.115-0.296 (0.167 ± 0.063) |
0.089-0.303 (0.170 ± 0.062) |
|
Evenness |
0.769-0.962 (0.864 ± 0.068) |
0.732-0.971 (0.861 ± 0.078) |
|
Copepoda
(n/l) Percentage |
49 - 95 (66 ± 17) 16.4 – 59.1 (32.8 ± 11.9) |
66 - 101 (81 ± 13) 11.9 – 29.-0 (18.7
± 4.9) |
|
Ostracoda
(n/l) |
2 - 10 (6 ± 3) |
2 - 10 (5 ± 2) |
|
Conchostraca
(n/l) |
0-4 |
0-2 |
|
Important Families
(Cladocera) |
||
|
Chydoridae
(n/l) |
25 - 124 (78 ± 35) |
25 - 111 (77 ± 27) |
|
Bosminidae
(n/l) |
6 - 59 (23 ± 20) |
3 - 70 (28 ± 22) |
|
Daphniidae
(n/l) |
11 - 44 (16 ± 10) |
5 - 51 (19 ± 12) |
|
Sidiidae (n/l) |
2 - 35 (13 ± 10) |
1 - 18 (9 ± 5) |
|
Important Cladocera
species |
||
|
Chydorus sphaericus
(n/l) |
17 ± 11 |
17 ± 10 |
|
Biapertura karua
(n/l) |
13 ± 7 |
9 ± 11 |
|
Bosmina longirostris (n/l) |
13 ± 11 |
16 ± 13 |
|
Bosminopsis deitersi
(n/l) |
10 ± 9 |
12 ± 10 |
|
Important taxa
(others) |
||
|
Mesocyclops leuckarti (n/l) |
29 ± 14 |
33 ± 13 |
|
M. hyalinus (n/l) |
11 ± 6 |
14 ± 8 |
|
Nauplii (n/l) |
20 ± 7 |
28 ± 13 |
Table 3. Microcrustacea community similarities
(Station I)
|
|
Nov |
Dec |
Jan |
Feb |
March |
Apr |
May |
June |
July |
Aug |
Sep |
Oct |
|
Nov |
- |
88.6 |
89.5 |
89.2 |
62.3 |
67.8 |
85.7 |
82.4 |
86.5 |
86.1 |
80.6 |
86.5 |
|
Dec |
|
- |
91.1 |
93.0 |
65.6 |
64.5 |
84.9 |
76.1 |
85.7 |
85.3 |
85.3 |
83.1 |
|
Jan |
|
|
- |
89.2 |
65.7 |
64.4 |
80.0 |
82.4 |
78.4 |
83.3 |
80.6 |
81.1 |
|
Feb |
|
|
|
- |
64.7 |
63.6 |
80.5 |
80.0 |
83.9 |
81.0 |
83.5 |
86.4 |
|
March |
|
|
|
|
- |
77.3 |
65.5 |
75.5 |
71.2 |
66.7 |
70.2 |
71.2 |
|
April |
|
|
|
|
|
- |
64.1 |
74.5 |
70.2 |
69.1 |
69.1 |
63.2 |
|
May |
|
|
|
|
|
|
- |
67.7 |
82.3 |
90.9 |
81.8 |
82.3 |
|
June |
|
|
|
|
|
|
|
- |
72.7 |
75.0 |
75.0 |
78.8 |
|
July |
|
|
|
|
|
|
|
|
- |
85.7 |
89.0 |
88.9 |
|
Aug |
|
|
|
|
|
|
|
|
|
- |
85.3 |
80.0 |
|
Sept |
|
|
|
|
|
|
|
|
|
|
- |
80.0 |
|
Oct |
|
|
|
|
|
|
|
|
|
|
|
- |
Table 4. Microcrustacea community similarities
(Station II)
|
|
Nov |
Dec |
Jan |
Feb |
March |
Apr |
May |
June |
July |
Aug |
Sep |
Oct |
|
Nov |
- |
92.8 |
91.8 |
92.8 |
79.4 |
66.7 |
80.0 |
82.7 |
86.8 |
88.0 |
81.6 |
85.7 |
|
Dec |
|
- |
96.7 |
95.5 |
83.5 |
66.7 |
78.9 |
83.9 |
87.8 |
86.4 |
87.8 |
89.2 |
|
Jan |
|
|
- |
98.9 |
82.5 |
65.7 |
80.5 |
87.8 |
86.7 |
85.4 |
86.7 |
88.1 |
|
Feb |
|
|
|
- |
81.0 |
63.8 |
78.9 |
88.9 |
85.4 |
83.9 |
85.4 |
89.2 |
|
March |
|
|
|
|
- |
75.9 |
76.9 |
82.9 |
81.7 |
82.9 |
81.7 |
80.6 |
|
April |
|
|
|
|
|
- |
76.4 |
70.0 |
72.1 |
73.3 |
68.8 |
67.7 |
|
May |
|
|
|
|
|
|
- |
80.6 |
79.4 |
83.6 |
79.4 |
78.3 |
|
June |
|
|
|
|
|
|
|
- |
82.2 |
83.3 |
82.2 |
81.1 |
|
July |
|
|
|
|
|
|
|
|
- |
90.4 |
86.5 |
90.7 |
|
Aug |
|
|
|
|
|
|
|
|
|
- |
84.9 |
81.1 |
|
Sept |
|
|
|
|
|
|
|
|
|
|
- |
88.0 |
|
Oct |
|
|
|
|
|
|
|
|
|
|
|
- |
Figure 1. Monthly variations in Microcrustacea and
Cladocera Richness (Station I)
Figure 2. Monthly variations in Microcrustacea and
Cladocera Richness (Station II)
Figure 3.
Hierarchical cluster analysis of Microcrustacea (Station I)
Figure 4.
Hierarchical cluster analysis of Microcrustacea (Station II)
Figure 5. Monthly variations in Abundance of Microcrustacea
(Station I)
Figure 6. Monthly variations
in Abundance of Microcrustacea (Station II)
Figure 7. Monthly variations
in Species Diversity of Microcrustacea
Figure 8. Monthly variations
in Evenness of Microcrustacea
Figure 9. Monthly variations
in Dominance of Microcrustacea