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Relative abundance of crayfish in the sampled sites (Baseline)_
| Site | Procambarus clarkii | Relative Abundance (%) |
|---|---|---|
| Mianya | 0 | 0.0 |
| Murinduko | 0 | 0.0 |
| Nice | 82 | 37.6 |
| Nineveh | 0 | 0.0 |
| Nguka | 104 | 47.7 |
| Mokou | 32 | 14.7 |
The association between the Crayfish and the snail population in various study sites_
| Model | Site | Estimate | STD Error | R2 | P-value | 95% CI |
|---|---|---|---|---|---|---|
| 1 | Mokou | -6.002 | 3.165 | 0.3393 | 0.09976 | -13.48561 – 1.482581 |
| 2 | Mianya | -1.432 | 1.677 | 0.09435 | 0.4214 | -5.398256 – 2.533673 |
| 3 | Nineve | -2.133 | 3.301 | 0.0563 | 0.5387 | -9.939124 – 5.672457 |
| 4 | Nguka | 0.8898 | 0.4651 | 0.3434 | 0.09729 | -0.2099173 – 1.989456 |
| 5 | Nice | -0.2187 | 0.3748 | 0.04639 | 0.5779 | -1.105067 – 0.667622 |
Species Checklist of some of the native aquatic biodiversity_
| Taxa | Scooped, trapped and seen |
|---|---|
| Crustaceans | Crabs and crayfish |
| Coleoptera | Water beetles |
| Hemiptera | Water scorpions, Belostoma |
| Ephemeroptera | Mayfly |
| Odonata | dragonfly |
| Plecoptera | stonefly |
| Hirudina | Leeches |
| Pisces | Cichlids, mudfish |
| Diptera | Adult mosquitoes and larva |
| Ceratopogonidae | biting midges |
| Gastropoda | Bi-valves, Lymnea, Belamya, Pila ovata, Melanoides tuberculata, Ancylids, physa acuta, Apple snail eggs and adults, Ceratophallus. |
| Nematodes | Oligochaetes, |
| Water fowls | Comorants, Little egrets, Egyptian geese, open billed stocks, whistling ducks, quilea quilea, African jacana |
| Amphibians | Toads and frogs |
| Reptiles | Monitor lizards (Varanus niloticus) |
| Macrophytes | Submerged: Ceratophyllum demersum and Najas horrida. |
Summary of mean abiotic features over the 2-year study period and coordinates of study areas_
| Water pH | Water turbidity (ppt) | Water temp. (°C) | Water Velocity (m/S) | Air velocity (m/S) | Air temp. (°C) | GPS | |
|---|---|---|---|---|---|---|---|
| Mokou | 7.97 | 0.09 | 21.9 | 0.5 | 0.7 | 27.8 | Lat. 0°41’5.14482” |
| Nguka | 7.1 | 0.11 | 25.7 | 0.2 | 3.83 | 33.4 | Lat. 0°38’38.55” S |
| Nice | 7.33 | 0.15 | 25.6 | 0 | 7 | 29.5 | Lat. 0°39’58.30”S |
| Mianya | 7.45 | 0.05 | 22.9 | 0.4 | 2.2 | 28 | Lat. 0°38’10.49”S |
| Nineveh | 6.88 | 0.06 | 25.1 | 0 | 10.2 | 27.3 | Lat. 0°37’31.44”S |