Influence of phytoplankton biomass on anchovy catches in Unguja and Pemba Channels

Travail de Projet (scientifique-pratique) , 2022 , 46 Pages

Sciences de la Terre / Géographie - Océanographie

This work aims to analyse the spatial and temporal variation of phytoplankton biomass in the eastern parts of the Unguja and Pemba Channels and its impact on anchovy catches. Secondary data from anchovy catches and Chl-a concentrations will be used as a proxy for phytoplankton biomass to gain important ecological and fisheries science insights.

The study by Edward Paul, submitted to the University of Dar es Salaam, addresses the important role of phytoplankton as primary producers in aquatic ecosystems. Using secondary data on anchovy catches and Chl-a concentrations as a measure of phytoplankton biomass, the study examines the spatial and temporal variation of this biomass in the eastern parts of the Unguja and Pemba Channels and its impact on fisheries. Chl-a concentrations were found to be higher in Unguja than in Pemba, with significant differences between seasons. Interestingly, anchovy catches were higher in the Pemba Channel, with the correlation between Chl-a and anchovy catches being positive but not significant. These results provide important insights for fisheries science and the protection of marine ecosystems.

Table of Contents

Acknowledgement

Dedication

List of abbreviations

Abstract

CHAPTER ONE
1 INTRODUCTION
1.1 General Introduction
1.2 Literature Review
1.2.1 Phytoplankton distribution and abundance
1.2.3 Fisheries in the eastern parts of Pemba and Zanzibar Channels
1.2.4 Small pelagic in Zanzibar and Pemba Channels
1.2.5 The influence of seasonal monsoon winds on phytoplankton productivity and fisheries along the eastern parts of Zanzibar and Pemba Channels
1.3 Statement of the Research Problem
1.4 Significance of the Study
1.5 Objectives
1.5.1 General objective
1.5.2 Specific objectives
1.5.3 Hypotheses
1.6 Scope of the study

CHAPTER TWO
2 MATERIALS AND METHODS
2.1 Description of the Study Area
2.2 Sampling /Experimental Design
2.3 Data Collection
2.3.1 Satellite data
2.3.2 Anchovy catch data
2.4 Data Analysis

CHAPTER THREE
3 RESULTS
3.1 Temporal and Spatial Distribution of Chl-a Biomass
3.2 Seasonal variation in Anchovy catches in Pemba and Unguja Channels
3.3 Satellite Chl-a and anchovy catches in Pemba and Zanzibar Channels
3.3.1 Pemba Channel
3.2.2 Zanzibar Channel

CHAPTER FOUR
4 DISCUSSION
4.1 Distribution and Abundance of Phytoplankton
4.2 Relationship Between Chl-a and the Anchovy fish catches

CHAPTER FIVE
5 CONCLUSION AND RECOMMENDATIONS
5.1 Conclusion
5.2 Recommendation

REFERENCES

• Auteur: Edward Paul (Auteur)
• Année de publication: 2022
• Pages: 46
• N° de catalogue: V1442130
• ISBN (PDF): 9783964879837
• ISBN (Livre): 9783964879844
• Langue: anglais
• mots-clé: Phytoplankton biomass, Anchovy catches, Unguja Channel, Pemba Channel, Chl-a concentration