A spectrum of phytoplankton flora along salinity gradient in the eastern Niger Delta area of Nigeria

Kadiri, M. O. (2002) A spectrum of phytoplankton flora along salinity gradient in the eastern Niger Delta area of Nigeria. Acta Botanica Hungarica, 44 (1-2). pp. 75-83. ISSN 0236-6495

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Abstract

The distribution of phytoplankton at different salinities in the eastern Niger Delta of Nigeria was investigated. The paper aims to contribute to the dearth of salinity-based distribution of organisms as well as phytoplankton studies in the region. A total of 64 taxa of phytoplankton were identified and classified into four divisions of Bacillariophyta (49 taxa), Chlorophyta (7 taxa), Cyanophyta (4 taxa) and Dinophyta (4 taxa). Salinity was found to produce floristical gradients. Three assemblages of phytoplankton were recognized which were those found at low narrow salinity range, those occurring at wide salinity zone and those with high narrow salinity range. Phytoplankton found in narrow salinity range were predominantly chlorophytes, while those occurring at high and narrow salinity were dinoflagellates and some diatoms.

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