Main Article Content
Zooplankton have been used as bioindicators of water quality. In this study, we assessed the spatial-temporal variations of zooplankton in the Kisii town wastewater treatment plant and how they were influenced by limnological parameters between May and August 2021. Triplicate zooplankton samples were collected monthly for laboratory analysis. Physical parameters were measured in situ using a YSI multi-parameter probe while triplicate wastewater samples were collected for chemical parameters analyses ex situ. Eleven (11) zooplankton species were identified belonging to three groups. Cladocera was represented by 5 species (45.5 %), Rotifera by 4 species (36.4 %), and Copepoda by 2 species (18.2 %). The total zooplankton density recorded was 515IndL-1 with the family Cladocera dominating (57.7 %) followed by Copepoda (22.8 %) then Rotifera (19.5 %) with the least number in the population density. The limnological parameters measurements indicate considerable wastewater pollutant removal during polishing but negatively influenced zooplankton diversity. Therefore, zooplankton can be used to monitor wastewater treatment progress.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Hassan, E., Jaafaru, A., Bonjoru, R., Ndeham, V., Jerry, J., Bagauda, D., & Michael, L. (2019). Diversity and abundance of zooplanktons , macroinvertebrates and fish larvae from Lake Ribadu, Adamawa State, Nigeria. JSM Aquaculture and Research, 1(6), 1–7. DOI: https://doi.org/10.9734/ajfar/2019/v4i130044
Goździejewska, A., & Tucholski, S. (2011). Zooplankton of Fish Culture Ponds Periodically Fed with Treated Wastewater. Polish Journal of Environmental Studies 20 no. 1 (2011): 67-79.
Omondi, R., Yasindi, A. W., & Magana, A. (2011). Spatial and temporal variations of zooplankton in relation to some environmental factors in Lake Baringo, Kenya. Eger. J. Sci. Technol., (11), 29–50.
Abdul, W. O., Adekoya, E. O., Ademolu, K. O., Omoniyi, I. T., Odulate, D. O., Akindokun, T. E., & Olajide, A. E. (2016). The effects of environmental parameters on zooplankton assemblages in tropical coastal estuary, South-West, Nigeria. The Egyptian Journal of Aquatic Research, 42(3), 281–287. https://doi.org/10.1016/j.ejar.2016.05.005 DOI: https://doi.org/10.1016/j.ejar.2016.05.005
Douglas, R., Albert, G., Reuben, O., Paul, O., Hellen, N., Boniface, G., Obed, N., Argwings, O., & Job, O. (2022). Assessment of Heavy Metal Concentrations (Cu, Cd, Pb, and Zn) in Wastewater from Gusii Treatment Plant in Kisii County, Kenya. Pan Africa Science Journal, 1(02), 122–138. https://doi.org/10.47787/pasj.v1i02.12 DOI: https://doi.org/10.47787/pasj.v1i02.12
Nyabaro, O. M., Mosoti, D., Muthoka, T. M., & Onyancha, E. (2018, September 6). Determination of Pollution Levels of Waste Water from Nakuru Tanners, Kenya. African Journal of Education,Science and Technology, 1(3), pp 200-210. https://doi.org/https://doi.org/10.2022/ajest.v1i3.215
Ibrahim, S. (2009). A survey of zooplankton diversity of challawa river , kano and evaluation of some of its physico-chemical conditions. Bayero Journal of Pure and Applied Sciences, 2(1), 19–26. DOI: https://doi.org/10.4314/bajopas.v2i1.58450
Deksne, R. (2011). Influence of wastewater on zooplankton communities in the Daugava River upstream and downstream of Daugavpils over the last 50 years. Knowledge and Management of Aquatic Ecosystems, 7(402), 1–17. https://doi.org/10.1051/kmae/2011050 DOI: https://doi.org/10.1051/kmae/2011050
Khune, C J; Parwate, B. P. (2017). Zooplankton diversity and their seasonal variation in Nav-Talav, Amgaon, Gondia District. International Journal of Researchers in Biosciences, Agriculture and Technology, 5(2), 653–656.
Rayori, D., Getabu, A., Omondi, R., Orina, P., Gisacho, B., & Omondi, A. (2021). Phytoplankton diversity in Gusii wastewater treatment plant in Kisii county , Kenya. International Journal of Fisheries and Aquatic Studies, 9(3), 299–306. DOI: https://doi.org/10.22271/fish.2021.v9.i3d.2505
Ogendi G. M.. A. M., Getabu. J. M. Onchieku (2015). An assessment of some physical, chemical and biological characteristics of Nyanchwa-Riana River flowing through Kisii town in South West Kenya. International Journal of Applied Science and Technology 5 (2), 68-79
Adhikari, S., Goswami, A. R., & Mukhopadhyay, S. K. (2017). Diversity of zooplankton in municipal wastewater-contaminated urban pond ecosystems of the lower Gangetic plains. Turkish Journal of Zoology, 41, 464–475. https://doi.org/10.3906/zoo-1601-12 DOI: https://doi.org/10.3906/zoo-1601-12
Eyo, V. O., Ekpo, P. B., Andem, A. B., & Okorafor, K. A. (2013). Ecology and Diversity of Phytoplankton in the Great Kwa River , Cross River State , Nigeria. 1(2), 1–7.
Ogbeigbu, A. E. (2005). Biostatistics; A practical approach to Research and data handling.Minex publishing Company Limited, Benin City Nigeria. 153–155. https://doi.org/10.35248/2155-95188.8.131.522
APHA (2014) Standard Methods for the Examination of Water and Wastewater. 22nd Edition, American Public Health Association, American Water Works Association and Water Environmental Federation, Washington DC.
Onderi, Moses; Ongori, Z. (2019). Kisii County Government Finance and Economic Planning Annual Development Plan (2020-2021).
Kumar, K. S., Dahms, H., Won, E., Lee, J., & Shin, K. (2015). Ecotoxicology and environmental safety microalgae – A promising tool for heavy metal remediation. Ecotoxicology and Environmental Safety, 113, 329–352. https://doi.org/10.1016/j.ecoenv.2014.12.019. DOI: https://doi.org/10.1016/j.ecoenv.2014.12.019
Mukhopadhyay, S. K., Chattopadhyay, B., Goswami, A. R., & Chatterjee, A. (2007). Spatial variations in zooplankton diversity in waters contaminated with composite effluents. J. Limnol, 66(2), 97–106. DOI: https://doi.org/10.4081/jlimnol.2007.97
Were-Kogogo, P., & Adhiambo, J. (2017). Status of phytoplankton community of Kisumu Bay , Winam Gulf, Lake Victoria, Kenya. The International Journal of Engineeering and Sciences, 6(5), 22–28. https://doi.org/10.9790/1813-0605022228 DOI: https://doi.org/10.9790/1813-0605022228