NORAD/UNDP/FAO PROGRAMME
Reports on Surveys with R/V Dr .Fridtjof Nansen
Institute of Marine Research, Bergen
Bergen, December 1988
This report was prepared at the Institute of Marine Research, Bergen under the responsibility of T. Strømme and G. Sætersdal. Dr. Luis Villegas assisted in the work and is responsible for the Spanish version of the report. Chapter 2.1 Hydrography was kindly contributed by Mr. Richard Ljøen and Chapter 2.2 Production Systems, Faunistic Regimes by Ms. Gabriella Bianchi. The invaluable assistance of O. Alvheim and H. Ullebust is acknowledged as is also the considerable input of work from the scientists of the region who are listed as participants under 1.2 below.
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«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. |
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 PROGRAMME OBJECTIVES
1.2 EFFORT OF INVESTIGATION
1.3 METHODS OF INVESTIGATION, INSTRUMENTS AND EQUIPMENT
1.4 FISH TAXONOMY
CHAPTER 2. THE ENVIRONMENT-ECOLOGICAL REGIMES
2.1.1 Introduction
2.1.2 Hydrographical observations
2.1.3 Results2.2 PRODUCTION SYSTEMS, FAUNISTIC REGIMES
2.2.1 Hydrographic conditions which might have importance in determining the different species assemblages
2.2.2 Shallow water communities
2.2.3 Intermediate shelf dwellers
2.2.4 Deepwater communities2.3 THE SHELF AND SLOPE, AREAL EXTENSIONS AND BOTTOM CONDITIONS
CHAPTER 3. THE COMPOSITION, DISTRIBUTION AND ABUNDANCE OF THE FISH RESOURCES
3.1.1 Small pelagic fish
3.1.2 Demersal resources
3.1.3 Overview of survey results and estimates of standing biomass of the resources
3.1.4 Comments to the findings3.3 PANAMA WEST COAST, THE GULFS OF COIBA AND CHIRIQUI
3.4 PANAMA, OVERVIEW OF SURVEY RESULTS AND ESTIMATES OF STANDING BIOMASS OF THE RESOURCES
3.5.1 Small pelagic fish
3.5.2 Demersal resources
3.5.3 Overview of survey results and estimates of standing biomass of the resources
3.5.4 Comments to the findings3.6.1 Small pelagic fish
3.6.2 Demersal resources
3.6.3 Overview of survey results and estimates of standing biomass of the resources
3.6.4 Comments to the findings3.8.1 Small pelagic fish
3.8.2 Demersal resources
3.8.3 Overview of survey results and estimates of standing biomass of the resources
3.8.4 Comments to the findings3.9.1 Small pelagic fish
3.9.2 Demersal resources
3.9.3 Overview of survey results and estimates of standing biomass of the resources
3.9.4 Comments to the findings3.10 THE GULF OF TEHUANTEPEC, MEXICO
3.10.1 Small pelagic fish
3.10.2 Demersal resources
3.10.3 Overview of survey results and estimates of standing biomass of the resources
3.10.4 Comments on the findings.
ANNEX 1. Acoustic instruments and their calibration. Description of the fishing gear.