42
Table 4.3
Percentage composition of benthic macroinvertebrate fauna in different Himalayan river basins
Yamuna
Bhagirathi
Alaknanda
Mandakini
Pindar
Ramganga
Ephemeroptera
Heptageniidae
6.97
8.62
5.69
5.44
9.49
7.14
Baetidae
6.41
10.51
5.82
6.13
8.49
5.17
Ephemerellidae
5.34
8.97
4.69
4.20
4.75
3.59
Leptophlebiidae
3.13
8.16
3.32
3.78
2.39
2.87
Caenidae
3.87
7.32
3.79
3.46
2.74
2.95
Siphlonuridae
2.61
6.52
2.50
3.21
2.39
2.95
Trichoptera
Hydropsychidae
5.02
5.78
4.56
4.49
6.70
6.87
Philopotamidae
4.74
5.05
5.20
5.50
7.79
3.89
Psychomyiidae
3.64
3.54
2.49
4.54
3.48
3.32
Rhyacophilidae
1.37
3.40
1.45
1.80
0.00
1.55
Glossosomatidae
4.48
3.36
6.47
6.49
9.84
2.95
Leptoceridae
4.54
3.12
9.33
4.70
7.62
3.17
Limnephilidae
4.19
2.56
8.71
4.83
7.27
4.91
Brachycentridae
3.52
2.52
3.49
2.79
2.92
2.30
Diptera
Blephariceridae
2.44
2.42
2.09
2.45
1.18
2.38
Chironomidae
2.68
2.10
2.84
2.43
5.79
2.53
Simuliidae
2.44
2.00
1.98
2.81
2.70
8.72
Dixidae
1.99
1.75
1.72
2.11
0.91
2.00
Plecoptera
Perlidae
2.59
1.40
1.96
2.54
2.26
2.57
Perlodidae
2.54
1.37
1.80
2.29
1.87
2.53
Coleoptera
Sialidae
2.20
1.30
1.72
2.27
0.96
2.19
Corydalidae
1.80
1.23
1.67
2.27
0.35
2.00
Psephenidae
4.38
1.02
2.49
2.59
3.48
4.15
Dryopidae
2.37
0.98
1.71
2.11
0.26
2.38
Elmidae
2.47
0.91
2.06
2.29
1.13
2.72
Odonata
Gomphidae
2.20
0.88
1.77
2.04
0.35
2.15
Agrionidae
2.03
0.88
1.77
2.07
0.44
2.04
Neuroptera
2.20
0.88
1.97
2.27
0.87
2.30
Hemiptera
Hemiptera
1.80
0.81
1.59
1.98
0.44
1.62
Basommatophora
Planorbidae
2.06
0.67
1.72
2.02
0.52
2.00
Lymnaeidae
1.96
0.00
1.66
2.11
0.61
2.08
The dominant taxon is shown in bold
P. Nautiyal et al.
Table 4.3
Percentage composition of benthic macroinvertebrate fauna in different Himalayan river basins
Yamuna
Bhagirathi
Alaknanda
Mandakini
Pindar
Ramganga
Ephemeroptera
Heptageniidae
6.97
8.62
5.69
5.44
9.49
7.14
Baetidae
6.41
10.51
5.82
6.13
8.49
5.17
Ephemerellidae
5.34
8.97
4.69
4.20
4.75
3.59
Leptophlebiidae
3.13
8.16
3.32
3.78
2.39
2.87
Caenidae
3.87
7.32
3.79
3.46
2.74
2.95
Siphlonuridae
2.61
6.52
2.50
3.21
2.39
2.95
Trichoptera
Hydropsychidae
5.02
5.78
4.56
4.49
6.70
6.87
Philopotamidae
4.74
5.05
5.20
5.50
7.79
3.89
Psychomyiidae
3.64
3.54
2.49
4.54
3.48
3.32
Rhyacophilidae
1.37
3.40
1.45
1.80
0.00
1.55
Glossosomatidae
4.48
3.36
6.47
6.49
9.84
2.95
Leptoceridae
4.54
3.12
9.33
4.70
7.62
3.17
Limnephilidae
4.19
2.56
8.71
4.83
7.27
4.91
Brachycentridae
3.52
2.52
3.49
2.79
2.92
2.30
Diptera
Blephariceridae
2.44
2.42
2.09
2.45
1.18
2.38
Chironomidae
2.68
2.10
2.84
2.43
5.79
2.53
Simuliidae
2.44
2.00
1.98
2.81
2.70
8.72
Dixidae
1.99
1.75
1.72
2.11
0.91
2.00
Plecoptera
Perlidae
2.59
1.40
1.96
2.54
2.26
2.57
Perlodidae
2.54
1.37
1.80
2.29
1.87
2.53
Coleoptera
Sialidae
2.20
1.30
1.72
2.27
0.96
2.19
Corydalidae
1.80
1.23
1.67
2.27
0.35
2.00
Psephenidae
4.38
1.02
2.49
2.59
3.48
4.15
Dryopidae
2.37
0.98
1.71
2.11
0.26
2.38
Elmidae
2.47
0.91
2.06
2.29
1.13
2.72
Odonata
Gomphidae
2.20
0.88
1.77
2.04
0.35
2.15
Agrionidae
2.03
0.88
1.77
2.07
0.44
2.04
Neuroptera
2.20
0.88
1.97
2.27
0.87
2.30
Hemiptera
Hemiptera
1.80
0.81
1.59
1.98
0.44
1.62
Basommatophora
Planorbidae
2.06
0.67
1.72
2.02
0.52
2.00
Lymnaeidae
1.96
0.00
1.66
2.11
0.61
2.08
The dominant taxon is shown in bold
P. Nautiyal et al.