Greener Journal of Biological Sciences Vol. 8 (3), pp. 042-050, July 2018.
© Authors
Research Article
Manuscript Number: 070318093
(DOI: http://doi.org/10.15580/GJBS.2018.3.070318093)
A Study on Phytoplanktonic Composition in Dadin-Kowa Dam, Gombe State, Nigeria
ISAH Zainab¹*, ABUBAKAR K. A.2, UMAR D. M.1 and HASSAN S. K.1
¹Department of Biological Sciences, Gombe State University, Nigeria
2Departement of Zoology Modibbo Adama University of Technology (MAUTECH) Yola, Nigeria
Abstract
This study was carried out to evaluate species composition and
distributions of phytoplanktonin relation to changes in some physico-chemical
characteristics of water in Dadinkowa Dam, Gombe State, Nigeria. Samples were
collected using plankton net by hauling for five meters. Samples were kept in
plastic containers and preserved in 4% formalin and logols iodine solution. 1
ml of sub-sample was observed under microscope. Physico-chemical parameters
recorded include water temperature which ranged between 28OC and
31.9°C, pH ranged from 7.1 to 8.9, Transperancy ranged from 0.06m to 0.16m,
Dissolved oxygen range from 1.7 to 3.9mg/l and Conductivity ranged from 81 to
100µs/cm. 22 species of phytoplanktons were recorded and the maximum mean
density was 92,105 cell/L and minimum was 44,317 cell/L. The dominant
phytoplankton was Bacillariophyceae38.1%, followed by order Chlorophyceae
35.4%, Myxophyceae25.3% and Chrysophyceae 1.22%.(The phytoplankton varied
significantly with months of sampling.
Keywords: Phytoplankton,
Physico-chemical Parameters, Dadin - kowa Dam, Gombe, Nigeria.
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