Report on Surveys of Gabon Marine Fish Resources, March-December 1985













Table of Contents


NORAD/UNDP/FAO PROGRAMME

Reports on Surveys with R/V Dr. Fridtjof Nansen

Institute of Marine Research, Bergen

«Dr. Fridtjof Nansen»

The fishery research vessel «Dr. Fridtjof Nansen» belongs to the Norwegian Agency for Development Cooperation (NORAD). It was designed and built for scientific and exploratory investigations of fishery resources of developing countries, under a joint plan with the Fisheries Department of FAO.

A list of the vessels operational assignment from 1975 to 1987 is shown on the back cover.

The Institute of Marine Research, Bergen is under a subcontract with NORAD responsible for the operation of the vessel, and the various research programmes were planned and conducted jointly with FAO and the relevant fisheries research organizations in the countries concerned.

Results of the previous surveys have been presented in a number of cruise and progress reports under each programme.


The research programme of the R/V DR. FRIDTJOF NANSEN is sponsored by The Norwegian Agency for Development Cooperation, NORAD, The Food and Agriculture Organization of the United Nations, FAO and the United Nations Development Programme, UNDP. The execution of the programme is the responsibility of the Institute of Marine Research, Bergen in cooperation with FAO’s Department of Fisheries and national fisheries administrations.

This electronic document has been scanned using optical character recognition (OCR) software and careful manual recorrection. Even if the quality of digitalisation is high, the FAO declines all responsibility for any discrepancies that may exist between the present document and its original printed version.


Table of Contents


CHAPTER 1. INTRODUCTION

1.1 Programme background
1.2 Investigational effort
1.3 Methods of investigations

CHAPTER 2. THE GABON SEA

2.1 The shelf area
2.2 Hydrography

CHAPTER 3. THE COMPOSITION, DISTRIBUTION AND ABUNDANCE OF THE FISH RESOURCES.

3.1 Introduction
3.2 Small pelagic fish
3.3 Trigger fish
3.4 Demersal fish
3.5 Assemblages of demersal fish

CHAPTER 4. OVERVIEW OF BIOMASS ESTIMATES, DISCUSSION OF RESULTS AND ESTIMATES OF RESOURCE POTENTIALS.

4.1 Review and discussion of biomass estimates
4.2 Estimate of resource potentials

Annex 1. Course tracks with fishing- and hydrographic stations.

Annex 2. Records of fishing stations.

N. STAT. (TRAIT.) ANNEE: 124-159
FISHING STATION NO. 305-330
FISHING STATION NO. 331-361
FISHING STATION NO. 529-573
FISHING STATION NO. 711-743

Annex 3. Catch data by species with reference to fishing stations.

Annex 4. Processed length data by species and samples.

Annex 5. Length frequency distributions by species and samples.

Annex 6. Pooled length frequency diagrams by species and surveys.

Annex 7. Summary tables of catch compositions by species, surveys, regions and totals for pelagic and bottom hauls separately.

Annex 8. Summary tables of swept area trawl data showing catch distributions and mean densities by species, surveys, regions and totals.

Annex 9. Illustrated list of main fish species.

Annex 10. Acoustic instruments and fishing gear.