An evaluation of the trophic status of the Shen Reservoir by an analysis of phytoplankton composition and water characteristics

Chidobem, I.J. and Ejike, C. (1986) An evaluation of the trophic status of the Shen Reservoir by an analysis of phytoplankton composition and water characteristics. In: 3rd Annual Conference of the Fisheries Society of Nigeria (FISON) , 22-25 February, 1983 ,Maiduguri, Nigeria, pp. 175-178.

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Abstract

In an effort to evaluate the production potential of an artificial impoundment, the phytoplankton of the Shen reservoir was sampled from November 1981 to June 1982 at three stations during three periods of distinct seasonal hydrographic characteristics. The samples were subsampled and quantified. Most of the phytoplankton were identified to the species level. There were in all 53 species comprising Chlorophyceae contributing 36.70% with species of Volvox, Pediastrum, Closterium, Staurodesmus and Ankistrodesmus as dominant species in this group. The Cyanophyceae contributed 30.00% with species of Microcystis, Nostoc , and Oscillatoria as the dominant species. An analysis of temporal and spatial changes in composition and abundance of the various groups showed that these were influenced by water temperature, sampling period and station. Based on the trophic status of the most abundant species, the composition of the phytoplankton is indicative of a tropical reservoir with a moderate productivity for fish culture

Item Type: Conference or Workshop Item
Title: An evaluation of the trophic status of the Shen Reservoir by an analysis of phytoplankton composition and water characteristics
Personal Creator/Author:
CreatorsEmail
Chidobem, I.J.
Ejike, C.
Page Range: pp. 175-178
Date: 1986
Event Title: 3rd Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Maiduguri, Nigeria
Event Dates: 22-25 February, 1983
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; check lists; fish culture; phytoplankton; potential resources; trophic structure
Subjects: Aquaculture
Item ID: 3439
Depositing User: Ms Maria Kalentsits
Date Deposited: 28 May 2010 19:21
Last Modified: 29 Sep 2011 17:24
URI: http://aquaticcommons.org/id/eprint/3439

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