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International Journal of Fisheries and Aquatic Studies
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Impact Factor RJIF: 5.69
P-ISSN: 2394-0506, E-ISSN: 2347-5129

International Journal of Fisheries and Aquatic Studies

2021, Vol. 9, Issue 3, Part D

Phytoplankton diversity in Gusii wastewater treatment plant in Kisii County, Kenya


Author(s): Rayori Douglas, Getabu Albert, Omondi Reuben, Orina Paul, Babu Jared, Gisacho Boniface and Omondi Argwings

Abstract: Phytoplanktons are free-floating microscopic plants in water and they are the primary producers providing food to aquatic organisms. However, water quality affects the species production and assemblage in terms of diversity, composition, and abundance. This study assessed the spatial and temporal diversity and abundance of phytoplanktons in the Gusii wastewater treatment plant. A total of 124 phytoplankton species were identified and belonged to six families: Euglenophyceae, Bacillariophyceae, Dinophyceae, Cyanophyceae, Chlorophyceae, and Zygnemophyceae. The phytoplankton biovolume was 385.24mm3/L, with the family Euglenophyceae contributing the largest percentage. The species diversity index (H’) was generally low (H’ = 1.759 and 0.7596) in the effluent and influent respectively, indicating a considerable increase in diversity as the wastewater undergoes treatment. The low diversity was attributed to changes in physical, chemical, and biological environmental conditions. The effluent was richer in species, with a value of 5.829, while the influent was the least with 3.409. The low phytoplankton diversity in the wastewater treatment plant was influenced by the physicochemical parameters. It is therefore recommended that the quality of the wastewater during treatment needs to be monitored continuously for quality as baseline information to guide stakeholders and to ensure sustainability for the Gusii wastewater lagoon ecosystem health.

DOI: 10.22271/fish.2021.v9.i3d.2505

Pages: 299-306  |  675 Views  155 Downloads

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How to cite this article:
Rayori Douglas, Getabu Albert, Omondi Reuben, Orina Paul, Babu Jared, Gisacho Boniface, Omondi Argwings. Phytoplankton diversity in Gusii wastewater treatment plant in Kisii County, Kenya. Int J Fish Aquat Stud 2021;9(3):299-306. DOI: https://doi.org/10.22271/fish.2021.v9.i3d.2505
International Journal of Fisheries and Aquatic Studies

International Journal of Fisheries and Aquatic Studies

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