The phytoplanktons found in the Federal University of Technology Akure (FUTA) was studied from April to August 2017 which spanned for 5 months which took place in two sampling sites, the Fisheries and Aquaculture Technology Research Farm pond (FAT pond) was the first sampling station while Crop Science and Pest Management water body was the second sampling water body where samples were collected at different sampling depths ranging between 16-30cm. A hundred and fifty (150cl) of FUTA water samples were collected in each month throughout the study period.
Fourteen (14) species of phytoplanktons were identified as aggregate in the two sampling sites, consisting of Bacillariophyta (10), Chlorophyta (2), Dinophyta (1), Mediophyta (1). The total phytoplankton density in the Crop Science and Pest Management water body increased from a total population of 44 in the fourth month to a total population of 50 in the fifth month while in the Fisheries and Aquaculture Technology (F.A.T) pond the increment started in the third month with a total population of 41 to 61 in the fifth month. Temperature, pH and dissolved oxygen and conductivity ranged from 23.84°c to 29.40°c; 6.61 to 7.14, 3.08 to 5.35 mg/L and 106.18 to 195.78 µscm respectively.
Navicular sp was the most dominant phytoplankton specie with a total of 120 observations followed by Coscinodiscus and Ceratia which occurred with 113 and 68 respectively while the species with the least number of appearances were Liemophora and Pinnularia with 4 and 3 occurrences respectively.
Changes in temperature, conductivity, pH and dissolve oxygen had an effect on phytoplankton abundance resulting in an increase and decrease in the number of phytoplankton species. However, the result found cannot necessarily deduce the long-term biological events and processes of the water bodies. Since the study was done in a period of five months which is not sufficient for concluding the results.
TABLE OF CONTENTSCover Page iTitle page iiCertification iiiDedication ivAcknowledgement vTable of Contents viList of Tables viiList of Figures viiiAbstract ixCHAPTER ONE1.0 General Introduction of water bodies in Nigeria 11.1 Experimental site 6
1.2 Justification 91.3 Aims and Objectives of the Study9CHAPTER TWO2.0 Literature Review 102.1 Oxygen production 112.2 Growth strategy 122.3 Phytoplankton Occurrence and Distribution 13CHAPTER THREE3.0 Materials and Method 153.1 Study Duration 153.2 Bottle Sampling Method 153.3 Sample preservation and handling 163.4 Labelling 163.5 Equipments used 173.6 Supplies used for identification 173.7 Analytical Procedure 18
3.7.1 Water Analysis 183.7.2 Identification of phytoplankton 183.8 Statistical Analysis 19CHAPTER FOUR4.0 Results 214.1 Diversity and Abundance of Phytoplankton Species in FUTA environs 214.2 Classification of phytoplankton in FUTA environs 244.2.1 Abundance of (no. of individuals) phytoplanktons in Fisheries & AquacultureTechnology research pond 274.2.2 Abundance of (no. of individuals) phytoplanktons in Crop Science & PestManagement research farm water body 284.3 Abundance of Phytoplankton in Both Water Sources for 5 Months 304.4 Diversity indices of FUTA Environs Water Body 334.5 Abundance of phytoplankton in both water sources for 5 months 354.6 Influence of water factors on Phytoplankton Species Abundance 374.6.1 The relationship between pH and phytoplankton species abundance 384.6.2 The relationship between water, pH and phytoplankton species abundance 394.6.3 The relationship between D.O and phytoplankton species abundance 40
4.6.4 The relationship between temperature and phytoplankton species abundance 414.7 Water parameters for the Waterbodies of FUTA Environs During the Study 424.8 Physico-chemical variables of each water parameter and concentration in the waterbodiesof FUTA environs during the study 44CHAPTER FIVE5.0 Discussion 465.1 Abundance of Phytoplankton species 465.2 Environmental factors relationship with phytoplankton abundance 475.3 Diversity and Abundance of phytoplankton species 485.4 Conclusion 505.5 Contribution to knowledge 50REFERENCEAPPENDIX
LIST OF TABLETable 1: Major inland water resources of Nigeria3Table 2: Distribution and extent of Nigerian fresh waterbodies 4Table4.1: Occurrence of phytoplankton in sampling stations for each month in environs 22Table 4.2: Showing classification of all phytoplankton species found 25Table 4.2.1: Abundance of (no. Of individuals) phytoplanktons in fisheries & aquaculturetechnology research pond 27Table 4.2.2: Abundance of (no. Of individuals) phytoplanktons in crop science & pestmanagement research farm water body 28Table 4.3: Abundance of phytoplankton in both water sources for months 31Table 4.4: Diversity indices of Futa environs water body 34Table 4.6: Summary for regression analysis of variance for phytoplankton abundance 37Table 4.7: Water parameters for the waterbodies of futa environs during the study 42
List of figureFigure 1: Hydrological map of Nigeria showing the major inland waters 5Figure 2: Abundance of phytoplankton in both water sources for 5 months 36Figure 3: The relationship between conductivity and phytoplankton species abundance 38Figure 4: The relationship between water ph and phytoplankton species abundance 39Figure 5: The relationship between dissolved oxygen and phytoplankton species abundance 40Figure 6: The relationship between temperature and phytoplankton species abundance 41Figure 7: Water parameters for the waterbodies of Futa environs during the study 43Figure 8: Physico-chemical variables and concentration in the water bodies in futa environs during the study 45
