ABSTRACT
A study was undertaken to determine the plankton and benthos of Ekole River in Bayelsa State of Nigeria. Surface water and sediment samples were collected in the dry (December-January) and wet (June –July) seasons between 2003 and 2004 for plankton and benthic analyses. The water temperature ranged from 27-33°C, pH 6.30-7.5, total suspended solids (T.S.S) 110-282 mg/L, Chloride 15.40- 39.6 mg/l, dissolved oxygen 4.11-10.83 mg/l and conductivity 64.5-84.55µS/cm. The total plankton count ranged between 267 x 10³ and 11830 X 10 ³ / L. Forty three and forty seven species of phytoplankton belonging to five families were identified in the dry and rainy seasons respectively. The mean zooplankton population ranged from 1954 x 10 / L in the dry to 3479 x 10 / L in the wet season while the benthic organisms ranged from 113 x 10 / L to 152 x 10 /L in the rainy and dry seasons respectively. Bacillariophyceae dominated the phytoplankton while the rotifers dominated the zooplankton species. Some biological indicators of pollution: larval forms of Chironomids ,Odonatans and Ephemenopterans were also identified in the river.
Olaifa, F & Leilei, K (2021). A STUDY OF THE PLANKTON AND BENTHOS OF EKOLE RIVER IN BAYELSA STATE, NIGERIA. Afribary. Retrieved from https://afribary.com/works/a-study-of-the-plankton-and-benthos-of-ekole-river-in-bayelsa-state-nigeria
Olaifa, Flora and K Leilei "A STUDY OF THE PLANKTON AND BENTHOS OF EKOLE RIVER IN BAYELSA STATE, NIGERIA" Afribary. Afribary, 02 Apr. 2021, https://afribary.com/works/a-study-of-the-plankton-and-benthos-of-ekole-river-in-bayelsa-state-nigeria. Accessed 01 May. 2024.
Olaifa, Flora, K Leilei . "A STUDY OF THE PLANKTON AND BENTHOS OF EKOLE RIVER IN BAYELSA STATE, NIGERIA". Afribary, Afribary, 02 Apr. 2021. Web. 01 May. 2024. < https://afribary.com/works/a-study-of-the-plankton-and-benthos-of-ekole-river-in-bayelsa-state-nigeria >.
Olaifa, Flora and Leilei, K . "A STUDY OF THE PLANKTON AND BENTHOS OF EKOLE RIVER IN BAYELSA STATE, NIGERIA" Afribary (2021). Accessed May 01, 2024. https://afribary.com/works/a-study-of-the-plankton-and-benthos-of-ekole-river-in-bayelsa-state-nigeria