Plankton assemblages and environmental gradients in the middle reaches of the Imo River, Niger Delta, Nigeria

Plankton communities and physical variables in c. 5 km of the middle reaches of the Imo River, subject to sand dredging and oil/gas exploration, were surveyed in 2003 providing a preliminary checklist of plankton assemblages in relation to environmental parameters. Both phytoplankton and zooplankton...

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Bibliographic Details
Published inAfrican journal of aquatic science Vol. 33; no. 3; pp. 241 - 248
Main Authors Zabbey, N, Sikoki, FD, Edoghotu, J
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.12.2008
Subjects
Cladocera
Copepoda
Freshwater
HUMAN ACTIVITIES
MICROFLORA
PHYTOPLANKTON
Rotifera
SPATIAL DISTRIBUTION
ZOOPLANKTON
Nigeria
ASE, Nigeria, Rivers, Niger Delta
Nigeria, Niger R
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Summary:Plankton communities and physical variables in c. 5 km of the middle reaches of the Imo River, subject to sand dredging and oil/gas exploration, were surveyed in 2003 providing a preliminary checklist of plankton assemblages in relation to environmental parameters. Both phytoplankton and zooplankton were well distributed along the channel, with only minor differences between stations. Phytoplankton densities ranged between 21 and 397 cells l −1 , with Bacillariophyceae dominant in terms of species richness and abundance. Among the zooplankton, Rotifera had the highest species richness but were less abundant than Copepoda and Cladocera. The impact of sand dredging and oil/gas exploration activities on the plankton assemblages appeared minimal.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1608-5914
1727-9364
DOI:10.2989/AJAS.2008.33.3.6.618