NORAD - FAO/UNDP GL082/001
IMR, Bergen
Note.
This report has been prepared by T. Strømme and G.
Sætersdal, Institute of Marine Research, Bergen with the assistence of O.
Alvheim and H. Ullebust. Chapter 2 with the account of the intercalibration
experiments is based on a report prepared by J.J. Levenez, P. Oliver and I.
Svellingen.
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.
1.1 Objectives
1.2 Plan and conduct of the surveys.
1.3 Methods of investigation
CHAPTER 2 RESULTS OF THE INTERCALIBRATION EXPERIMENTS.
2.1 Introduction
2.2 Intership calibration using the sea bottom as common target
2.3 Intercalibration on fish layers
2.4 System comparisons - mini surveys
2.5 Concluding remarks
3.1 Introduction.
3.2 Sierra Leone, Guinea and Guinea Bissau.3.3 Senegal, The Gambia, Mauritania.
3.3.1 Small pelagic fish.
3.3.2 Demersal fish off the Gambia.3.4.1 Pelagic fish Agadir to Cape Juby.
3.4.2 Results from repeated coverages.
3.4.3 Fish distribution and abundance Cape Juby - Cape Bojador.
CHAPTER 4. OVERVIEW OF DISTRIBUTIONS AND ABUNDANCE OF STOCKS OF SMALL PELAGIC FISH.
4.1 The sardinella stocks.
4.2 Horse - and jack mackerels, scombrids etc.
4.3 The stock of trigger fish
4.4 Morroccan sardine
CHAPTER 5. BRIEF SUMMARY OF FINDINGS
ANNEX I. Course tracks and position of fishing stations.
ANNEX II. Description of instruments and fishing gear.
ANNEX III. Tables intercalibration experiments.
ANNEX IV Abbreviated list of fishing stations.
ANNEX V. List of species caught.
ANNEX VI. Histograms of pooled length frequency distributions by species, areas and surveys.