TABLE OF CONTENTS

PAGE

Title page

Declaration jj

Certification iii

Dedication iv

Acknowledgement v

Abstract vi

Table of Contents vii-viii

List of Tables ix

List of Figures x

List of Plates xi

CHAPTER 1: INTRODUCTION

CHAPTER 2: LITERATURE REVIEW 3

CHAPTER 3: MATERIALS AND METHODS 8

3.1 Description of Study Area 8

3.2 Sampling Programme for Physico-chemical parameters 11

3.3 Determination of Physical parameters 11

i. Temperature 11

ii. Transparency 11

iii. Colour 12

3.4.1 Determination of Chemical parameters 12

i. Dissolve oxygen 12

ii. PH 13

3.4.2 Ions 13

i. Calcium and Magnesium determination 13

ii. PotassiMm and Sodium 14

3.5 Determination of nutrients 16

I. Phosphate-N 16

ii. Total nitrogen-N 16

iii. NO3-N

iv. NH4-N 19

v. Organic carbon 19

3.6 Sampling Programmes for Biological Parameters 20

3.6.1 Sample Collection 20

,3.6.2 Plankton Identification 21

3.6.3 Slide Preparation 21

3.7 Determination of Primary Productivity 21

CHAPTER 4

4.0 Results 25

4.1 Dissolved Oxygen and Selected Physico-chemical parameters 25

4.2 Cations 30

4.3 Organic Carbon and NutrIents 30

4.4 Biological Parameters 33

(I) Phytoplankton and Zooplankton 33

(ii) Primary Productivity 33

CHAPTER 5

Discussion 40

Conclusion 45

Recommendation 47

References 48

Appendix