IIARD International Institute of Academic Research and Development

JOURNAL OF BIOLOGY AND GENETIC RESEARCH (JBGR )

E-ISSN 2545-5710
P-ISSN 2695-222X
VOL. 11 NO. 4 2025
DOI: 10.56201/jbgr.vol.11.no4.2025.pg1.14

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Analysis of Phytoplanktons Distribution and Physico-Chemical Parameters of Osara Dam, at Itakpe Iron Company of Kogi State, Nigeria

Ohiare Aliu Ademoh

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Abstract

The aim is to analyze phytoplanktons distribution as well as physico-chemical parameters of water in Osara dam at Itapke Iron Ore Mining Company of Nigeria. Water samples from the dam were collected in 2 litre bottle samplers before 6-8am in the morning and put in an ice-chest and immediately been transferred to the Obangede hospital laboratory for phytoplankton’s identification. The analyses of physico-chemical parameters of water were carried out by the usage of Atomic Absorbing Spectrum (AAS). The species viewed in the Up-stream, Down-stream, Mining-point and Control site which are Bacillariophyceae, Chlorophyceae and Cyanophyceae families done only within six (6) months of dry season. Investigation is based on whether there is interference of effluents from the company into the water body and the available nutrients for phytoplanktons usages. T-test were used to test the mean and degrees of freedom as well as their hypotheses analysis. Graphs were plotted to show variation at different sites of the dam and how effluents affected phytoplanktons levels. There was a significant difference between the control site and mining site. Also, the amount of phosphate and nitrate found at the different sites investigated also had significant difference (P?0.005). Also, in the three sites checked there is no significantly different (P?0.05) in their temperature ranges. Effective and sustainable management of environments especially in areas where mining exploration takes place should be initiated from local to international and global scale to ensure a sustainable development resource for mankind in Nigeria and the world at lerge.

keywords:

Phytoplanktons, Zooplanktons, Blooms, Bacillariophyceae, Chlorophyceae

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References:

Ajayi, A. O. & Akonai, K. A. (2003). Physio-chemical properites and microbal ecology of Lagos
lagoon, Nigeria.Biscience Research Communications, 15 (6): 453-462.
Akinyemi, S.A. & Nwankwo, D. I. (2007).Effect of Seasons on phytoplankton of the Asejire
reservoir (Nigeria).International Journal on Alga, 9:81-88.
Bornette, G. & Pujalon, S. (2011). Response of aquatic plants to abiotic factors: a review.
AquaticSciences73 1-14.
Chambers, P.A, Lacoul, P., Murphy, K.J andThomaz, S.M(2008). Global diversity of aquatic
macrophytes in freshwater.Hydrobiologia595 9-26.
Dahl, E., Laake, M., Tjeesem, K, Eberlein, K. &Bohle, B. (1983). Effects of Ekofisk crude oil on
an enclosed planktonic ecosystem.Marine Ecology.
Davies, A., Abolude, Z.D. & Ugwumba, A.A. (2008). Phytoplankton of the lower reaches of
Okpoka creek, Port Harcourt, Nigeria. Journal of Fisheries International, 3(3): 83-90.
Dicks, B. (1998). The Environmental Impact of Marine Oil Spill-Effects, Recovery and
Compensation – Paper presented at the International Seminar on Tanker Safety, Pollution
Prevention, Spill Response and Compensation, 6th November 1998. Rio de Janeiro, Brasil.
Dudgeon, D. (2000). Conservation of freshwater biodiversity in Oriental Asia: constraints,
conflicts, and challenges to science and sustainability. Limnology 1: 237-243.
Ezra, A.G.and Nwankwo, D. (2001). Composition of phytoplankton algae in Gubi Reservoir,
Bauchi. Nigeria. Journal of Aquatic Sciences, 16(2): 115-118.
Thomas, W.H., Rossi, S.S & Seibert, D. L. R. (1981). Effects of some representative petroleum
refinery effluent compounds on photosynthesis and growth of natural marine
phytoplankton assemblages. Marine Environmental Research, 4 (3): 203-215.
World Resources (1990). A report by World Resources Institute in Collaboration with United
Nations Environment Programme (UNEP) and United Nations Development Programme
(UNDP). Oxford University Press, New York: 383pp.

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