CIFA Occasional Paper No. 4

CIFA Occasional Paper No. 4
(Distribution restricted)         CIFA/OP 4

REPORT
of the
CONSULTATION ON FISHERIES PROBLEMS IN THE SAHELIAN ZONE

Bamako, Mali, 13–20 November 1974

FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 1975

CONTENTS

The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.

PREPARATION OF THIS DOCUMENT

This document contains the Report of the Consultation on Fisheries Problems in the Sahelian Zone (Bamako, Mali, 13–20 November 1974) as well as the working and information papers submitted at the meeting.




Distribution:Bibliographic reference:
  
FAO Department of Fisheries
Consultation on Fisheries Problems in the Sahelian Zone, Bamako, Mali, 13–20 November 1974 (1975)
Field Liaison Division (DDF)
UNDPCIFA Occas.Pap., (4):331 p.
UNDP Resident Representatives in the Sahelian Zone of Africa
Report of the .....
FAO Country Representatives in the Sahelian Zone of Africa
Meeting report. Inland waters. Floodplains. Hydrology. Ecology. Fisheries. Fish culture. Bibliographies. Commercial fishing. Processing fishery products. Marketing. Africa, Sahelian Zone.
FAO Regional Office for Africa
Regional and international organizations concerned
Participants

CONTENTS


Foreword

Report

INTRODUCTION

PARTICIPANTS

OPENING OF THE CONSULTATION

ADOPTION OF THE AGENDA

ELECTION OF THE OFFICERS FOR THE CONSULTATION

DISCUSSIONS ON TECHNICAL MATTERS

National Reports
Climatology
Hydrology
Biology of the Sahelian Fisheries
Monitoring Production and Effort
The Fisheries Ecology of the Floodplains
Possibility of Fish Culture in the Sahelian Zone
Fish and Fisheries Technology
Training
Organization of Inland Fishery Administration
Action Programme of Assistance to the Fisheries of the Sahelian Zone

Annex 1 - LIST OF PARTICIPANTS

Annex 2 - OPENING ADDRESS BY HIS EXCELLENCY TIEOULE KONATE, MINISTER OF FINANCE, INTERIM FOR HIS EXCELLENCY, THE MINISTER OF PRODUCTION

Annex 3 - ADDRESS BY MR. J.P. SCHELLENBERG, RESIDENT REPRESENTATIVE OF THE UNDP IN MALI

Annex 4 - ADDRESS OF MR. IBRAHIMA KONATE, EXECUTIVE SECRETARY OF THE CILSS (INTER-STATE COMMITTEE FOR DROUGHT RELIEF IN THE SAHEL)

Annex 5 - AGENDA

Annex 6 - BIOLOGY OF THE SAHELIAN FISHERIES by J. Daget

A.   Chad Basin
B.   Voltas Basin
C.   Niger Basin
D.   Senegal Basin
E.   General Remarks and Conclusions

Annex 7 - FISH PROCESSING AND MARKETING by Dr. Charbonnier

A.   At the Level of Fish Processing
B.   At the Level of Fish Marketing

Mali
Lake Chad
Niger - Dahomey
Upper Volta
Senegal - Mauritania
Sudan

Annex 8 - ACTION PROGRAMME OF ASSISTANCE TO THE FISHERIES OF THE SAHELIAN ZONE

Annex 9 - REGIONAL PROJECT FOR THE REVIEW OF FISHERIES PROBLEMS IN THE SAHELIAN ZONE

Annex 10 - MISSION ON FISHERIES PROBLEMS IN THE SAHELIAN ZONE RAF/74/055

Working Documents:

The fisheries ecology of African floodplains             R.L. Welcomme

1.    INTRODUCTION

2.    THE MORPHOLOGY OF FLOODPLAINS

2.1    General Morphology
2.2    Classification of Floodplains
2.3    Distribution and Area

3.    LIMNOLOGICAL FACTORS

3.1    Flood Regimes
3.2    Physical and Chemical Factors
3.3    Phytoplankton and Other Organisms
3.4    Summary

4.    DRY SEASON USES OF PLAIN

5.    FISH BIOLOGY

5.1    Distribution of Fish within the System
5.2    Migration
5.3    Reproduction
5.4    Feeding
5.5    Growth
5.6    Mortality
5.7    Summary

6.    METHODS OF FISHING

6.1    Seasonality of Fishing
6.2    Fishing by Confining Fish
6.3    Fishing for Migrating Fish

7.    CATCH AND PRODUCTIVITY

7.1    Productivity
7.2    Standing Stocks
7.3    Catch
7.4    Fluctuations in Catch between Years
7.5    Summary

8.    EFFECTS ON FISHERIES OF OTHER USES OF THE FLOODPLAIN

8.1    Dams
8.2    Irrigation
8.3    Pollution

9.    CONCLUSIONS

9.1    Models of Floodplain Fisheries
9.2    Management of Floodplains

REFERENCES

Evolution of the fisheries in the Lake Chad Basin during the last five years             A. Stauch and O.K. Oji-Olala

1.    Introduction
2.    The Fisheries
3.    Fish Statistics
4.    Traffic Census
5.    Analysis of the Data obtained during Five Years.
6.    Estimation of the Processed Fish
7.    Fluctuation of the Prices
8.    Conclusion
9.    References

Annex I   -   Baga Road (in metric tons)

II   -   N'Djamena Road (in metric tons)

III   -   Total Production

IV   -   Percentage Yearly Distribution of Products per Town

V   -   Progress or Regress Indices of Products per Destination

VI   -   Baga Road (in metric tons)

VII   -   N'Djamena Road (in metric tons)

VIII   -   Total Production

IX   -   Percentage Distribution of Catch per Landing Area

X   -   Progress or Regress of Catches per Landing Area

XI   -   Comparison of the Catch between the Southern and Northern Part of the Lake

Precipitation-Climatology of the Sub-Sahara Zone (10°–20°N)             D. Winstanley

1.    INTRODUCTION

2.    RAINFALL IN THE SUB-SAHARA ZONE

2.1    Rainfall regime
2.2    Variability of rainfall
2.3    Evolution of the drought
2.4    Rainfall distribution patterns in individual years
2.5    Mapping the southward shift of the Sahara

3.    RAINFALL AND RIVER DISCHARGE

3.1    Rainfall and river regimes
3.2    Relationship between rainfall and river discharge

4.    RAINFALL IN THE SUB-SAHARA ZONE IN RELATION TO THE GENERAL CIRCULATION OF THE ATMOSPHERE

5.    FUTURE CLIMATE AND RIVER FLOW

6.    CONCLUSIONS

REFERENCES

Annex

The great basic sources of natural energy (insolation, precipitations)             J. Louis (Rapporteur)

1.    INTRODUCTION

2.    METHODS

2.1    Analytical method of the numerical series

2.2    Analytical method of the profiles

2.3    Results

A.    Analysis of the numerical series (Solar adjustment)

B.    Study of the profiles (Local adjustment)

3.    TENTATIVE FORECAST

4.    ARGUMENTATION

5.    CONCLUSIONS

Drought in the West African Sahel and its consequences on the flood zones in the Niger, Senegal and Lake Chad Basins             J.P. Lamagat

1.    INTRODUCTION

2.    ANALYSIS ELEMENTS OF THE DROUGHT

2.1    Climatic zones in West Africa
2.2    Pluviometric data
2.3    Hydrological data

3.    HISTORICAL ASPECT OF THE HYDROLOGICAL CYCLE SINCE 1968

3.1    Before 1968
3.2    Year 1968

3.2.1    Rainfall
3.2.2    Flow

3.3    Year 1969

3.3.1    Rainfall
3.3.2    Flow

3.4    Year 1970

3.4.1    Rainfall
3.4.2    Flow

3.5    Year 1971

3.5.1    Rainfall
3.5.2    Flow

3.6    Year 1972

3.6.1    Rainfall
3.6.2    Flow

3.7    Year 1973

3.7.1    Rainfall
3.7.2    Flow

4.    STATISTICAL BALANCE

4.1    Rainfall heights
4.2    Flow

5.    FLOODED AREAS

5.1    The Niger Basin
5.2    Lake Chad
5.3    Senegal Basin

REFERENCES

TABLES I–V

FIGURES 1–4

Hydrological evolution of Lake Chad during the drought             A. Chouret and J. Lemoalle

Abstract

Résumé

Introduction

1.    Description of the environment

2.    Chari floods in 1972–73 and 1973–74

3.    Hydrological development of Lake Chad

3.1    Year-to-year variation of the lake level from 1900 to July 1972
3.2    Geomorphological trend of the lake from 1972 to 1974
3.3    Variations in the level from 1972 to 1974

3.31    Open water in the south at Kalom
3.32    The Baga Kawa Region
3.33    Southeastern archipelago at Bol
3.34    Northern basin at Kindjéria
3.35    Northern basin at Baga Kiskra
3.36    Northern basin at Malamfatori

3.4    Variation in lake area

Conclusion

References

Figures 1–9

Evolution of fisheries of the River Senegal Basin during the last five years (Abstract)             A.O. Fall

Information Documents:

National reports on the present status of fisheries in the Sahelian waters and plans for short and long-term development 1

Chad (Abstract)

Dahomey (Abstract)

Ethiopia

Abstract

Résumé

1.    The Nature and Development of Inland Fisheries in Ethiopia
2.    Long and Short-Term Plans of the Fisheries Division
3.    Short-Term Projects
4.    Long-Term Projects

APPENDIX   -   Morphometries and Environmental Conditions of Ethiopian Lakes

Ivory Coast (Abstract)

Mali (Abstract)

Mauritania (Abstract)

Niger (Abstract)

Nigeria

Abstract

Résumé

1.    Introduction
2.    Importance of Fisheries
3.    Effects of the Drought on Fisheries
4.    National Fisheries Development Plans
5.    Major Constraints to Fisheries Development

References

Tables

Senegal (Abstract)

Upper Volta (Abstract)

FAO inland fisheries projects in the Sahelian Zone             G. Rude

MAP

INTRODUCTION

REGIONAL PROJECT FOR THE REVIEW OF FISHERIES PROBLEMS IN THE SAHELIAN ZONE

ALL OTHER OPERATIONAL AND NON.OPERATIONAL INLAND FISHERIES PROJECTS RELATED TO THE REGIONAL SAHELIAN PROJECT

The effects of the West African drought on the Sahelian fisheries             W.Q-B. West

1.    INTRODUCTION

2.    EFFECT ON MARINE FISHERIES

3.    EFFECT ON INLAND FISHERIES

4.    EFFECT ON THE WATER SYSTEMS

5.    EFFECT ON ICHTHYOFAUNA

6.    EFFECT ON THE FISHING INDUSTRY

7.    SOCIO ECONOMIC IMPLICATIONS

8.    CONCLUSIONS AND RECOMMENDATIONS

MAJOR REFERENCES CONSULTED

TABLES I-VI

FIGURES 1–4

Bibliography on hydrobiology and fisheries of the Chad, Niger and Senegal Basins             G. Ardizzone

BIBLIOGRAPHY
BIBLIOGRAPHIE

INDEX

Data on the major inland waters of the Sahelian Zone             Secretariat's compilation

INTRODUCTION

THE LAKES AND RIVERS OF THE CHAD BASIN/LACS ET COURS D'EAU DU BASSIN DU TCHAD

Chad (lake)/Tchad (lac)
Chari (river/fleuve)
Logone (river/fleuve)
Iro (lake/lac)

THE NIGER-BENUE SYSTEM/SYSTEME NIGER-BENOUE

Niger
Benue/Benoué
Sokoto

LAKES OF THE CENTRAL DELTA/LACS DU DELTA CENTRAL

Aougoundou
Do
Faguibine
Gakore
Haribonga
Horo
Kobongo
Korarou
Niangaye
Tele/Télé
Kainji (reservoir/lac artificiel)

LAKES OF THE TOUBOURI DEPRESSION/LACS DE LA DEPRESSION DE TOUBOURI

Léré

THE LAKES AND RIVERS OF THE SENEGAL SYSTEM/LACS ET FLEUVES DU SYSTEME DU SENEGAL

Senegal (river)/Sénégal (fleuve)
Guiers (lake/lac)
Rkiz (lake/lac)

THE COASTAL RIVERS/FLEUVES COTIERS

Gambia (river)/Gambie (fleuve)

MAPS/CARTES 1–7

List of inland fishery workers in the Sahelian Zone             Secretariat's compilation

Cameroon/Cameroun

Chad/Tchad

Dahomey

Ethiopia/Ethiopie

Ivory Coast/Côte-d'Ivoire

Mali

Mauritania/Mauritanie

Niger

Nigeria

Senegal/Sénégal

Sudan/Soudan

Upper Volta/Haute-Volta

Regional Organizations/Organisations régionales

International Organizations working in the Region/Organisations internationales opérant dans la région

A brief review of the inland fisheries of the Sahelian Zone             Secretariat's compilation

INTRODUCTION

CAMEROON

CHAD

DAHOMEY

ETHIOPIA

IVORY COAST

MALI

MAURITANIA

NIGER

NIGERIA

SENEGAL

SUDAN

UPPER VOLTA

ANNEX 1  -  Fishery Statistics

ANNEX 2  -  List of fishes commonly caught in the Lake Chad, Niger River and Senegal River

Preliminary catalogue of cultivated and cultivable fish species in the Sahelian Zone             Secretariat's compilation

INTRODUCTION

Auchenoglanis occidentalis (Bagridae)

Bagrus docmac (Bagridae)

Barbus occidentalis (Cyprinidae)

Chrysichthys nigrodigitatus (Bagridae)

Chrysichthys walkeri (Bagridae)

Citharidium ansorgei (Citharinidae)

Citharinus citharus (Citharinidae)

Clarias lazera (Clariidae)

Cyprinus carpio (Cyprinidae)

Gymnarchus niloticus (Gymnarchidae)

Hemichromis fasciatus (Cichlidae)

Hepsetus odoë (Hepsetidae)

Heterotis niloticus (Osteoglossidae)

Labeo lineatus (Cyprinidae)

Labeo senegalensis (Cyprinidae)

Lates niloticus (Centropomidae)

Mugil capito (Mugilidae)

Mugil cephalus (Mugilidae)

Mugil falcipinnis (Mugilidae)

Mugil grandisquamis (Mugilidae)

Polypterus senegalus (Polypteridae)

Salmo gairdneri (Salmonidae)

Salmo trutta (Salmonidae)

Sarotherodon galileus (Cichlidae)

Sarotherodon heudeloti (Cichlidae)

Sarotherodon macrochir (Cichlidae)

Sarotherodon mossambica (Cichlidae)

Sarotherodon multifasciata (Cichlidae)

Sarotherodon niloticus (Cichlidae)

Sarotherodon tholloni (Cichlidae)

Tetraodon fahaka (Tetraodontidae)

Tilapia rendalli (Cichlidae)

Tilapia zilli (Cichlidae)

Monograph on Operation Fisheries (Opération pêche), Mopti             P. Raimondo

1.    PHYSICAL DATA

1.1    Location
1.2    Relief
1.3    Climate

1.31    Winds
1.32    Temperatures
1.33    Rainfall
1.34    Relative Humidity
1.35    Evaporation

1.4    Hydrography

1.41    Water Courses
1.42    Lakes

1.5    Biological Factors: Flora and Fauna

1.51    Aquatic Vegetation
1.52    Invertebrates
1.53    Fish
1.54    Predominant Species
1.55    Predators

2.    POPULATION DATA

2.1    Population
2.2    Ethnic Groups
2.3    Density
2.4    Habitat
2.5    Nomadism

3.    ECONOMIC DATA

3.1    Resources

3.11    Areas
3.12    Yields
3.13    Boats
3.14    Outboard Motors
3.15    Fishing Gear

3.2    Marketing

3.21    Marketing Forecast for 1974

3.3    Quantitive Evaluation of Total Production (1973)

Vocational training centre for fishery field assistants in Mali             P. Raimondo

1.    PURPOSE AND RECRUITMENT

2.    GENERAL INFORMATION

2.1    Admission
2.2    Selection
2.3    Duration of training and final examination

3.    THE CENTRE'S RESOURCES

3.1    Equipment and supplies
3.2    Instructors
3.3    Funds

4.    PROGRAMME CONTENT AND ELABORATION

5.    PEDAGOGIC CONSIDERATIONS ON PROGRAMME CONTENT

5.1    Conceptualization of the things the trainees know
5.2    Things that one must know
5.3    Techniques

6.    PEDAGOGIC PRINCIPLES

6.1    First principle: Communication and participation
6.2    Second principle: Progression
6.3    Third principle: Concretization
6.4    Fourth principle: Equilibrium and alternation

PROGRAMME OF TRAINING COURSES

How to train extension workers             P. Raimondo

1.    INTRODUCTION

2.    AROUSING THE SPIRIT OF CREATION AND INVENTION

2.1    Creating
2.2    Observing and Analysing
2.3    Comparing
2.4    Questioning Values

3.    PROVIDING THE MEANS OF EFFECTIVE ACTION

3.1    Causality
3.2    Responsibility
3.3    Risking
3.4    Technique
3.5    Instructors (“animateurs”)

Memo for the instructor (Animateur)             P. Raimondo

1.    SCHEDULE

2.    ORGANIZATION OF INSTRUCTORS'TEAMS

2.1    Teaching methods
2.2    Assignments
2.3    Meetings

3.    WORKING HOURS

Organization of the fishery industry in Mali             A. Szabo

1.    BASIC DATA

2.    PRESERVATION

3.    STAFFING PROBLEMS

4.    MARKETING

5.    CONCLUSION

1 These reports are published in the version of the language in which they were submittedat the Consultation, either English or French, with an abstract in both languages.