S/N | Taxon | Obudu River | Opa River | Esinmirin River |
---|---|---|---|---|
Crustacea | ||||
1 | Sudanonautes africanus | 113 | 106 | 89 |
Insecta | ||||
2 | Elassoneuria sp. | 123 | 18 | 6 |
3 | Aciagrion hamoni | 0 | 18 | 0 |
4 | Lestinogomphus sp. | 148 | 36 | 30 |
5 | Urothermis assignata | 118 | 44 | 88 |
6 | Acisoma panorpoides | 159 | 59 | 18 |
7 | Diptera 1 | 6 | 0 | 0 |
8 | Diptera 2 | 6 | 0 | 0 |
9 | Chironomus sp. | 6 | 0 | 58 |
10 | Eristalis sp. | 6 | 0 | 6 |
Gastropoda | ||||
11 | Lanistes libycus | 90 | 24 | 36 |
12 | Potadoma moerchi | 18 | 18 | 0 |
13 | Potadoma freethi | 12 | 83 | 889 |
14 | Melanoides tuberculata | 142 | 48 | 439 |
15 | Bulinus globosus | 0 | 0 | 93 |
16 | Tagelus plebeius | 0 | 12 | 12 |
Annelida | ||||
17 | Tubifex sp. | 47 | 0 | 0 |
Taxa richness | 14 | 11 | 12 | |
Abundance | 994 | 466 | 1764 | |
Margalef diversity index | 1.884 | 1.628 | 1.472 | |
Shannon-Wiener index | 2.225 | 2.185 | 1.527 | |
Pielou’s evenness index | 0.661 | 0.808 | 0.384 |