Table 1 Physical characteristics of the six study sites at Iloyin forest between March and August 2017
From: Water quality parameters and aquatic insect diversity in Aahoo stream, southwestern Nigeria
Description | Site 1 | Site 2 | Site 3 | Site 4 | Site 5 | Site 6 |
|---|---|---|---|---|---|---|
Location | 11.23° N | 24.07° N | 11.55° N | 08.59° N | 06.54° N | 05.24° N |
027.36° E | 042.01° E | 041.23° E | 032.95° E | 038.11° E | 030.38° E | |
Vegetation | Palm tree, fruit crop trees, shrub and bamboo | Tree crop and shrub | Tree and bush shrubs | Grass and herbs | Herbs and plantain plantation | Cocoa plantation |
Insolation | Moderately opened | Fairly opened | Opened | Opened | Fairly opened | Fairly shaded |
Water clarity | Clear | Clear | Clear | Clear | Clear | Clear |
Bottom substrates | Silt, detritus and dead organic matter | Sand, boulders and rock | Mixture of silt and sand | Mixture of silt and sand | Rocks boulder and sand | Rocks boulder and sand |
Aquatic plant | Water lily, Ficus sp. Oriza sp. | Hornwort, arrowhead, etc. | Arrowhead, water lettuce, panicum sp. | Hornwort, Panicum sp., Oriza sp. | Water hyacinth, Panicum sp., Oriza sp. | Water hyacinth, Panicum sp., Oriza sp. |
Human disturbance | Clearing of the riparian vegetation | Trampling of vegetation by the grazing cattle | Receives agriculture waste and agrochemical run-off from adjacent farms | Domestic washing and occasional clearing of riparian vegetation | Dumping of refuse at the bank of the stream and clearing of riparian vegetation | Agrochemical runoff from the farm and cloth washing; clearing of the riparian vegetation |