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结构  
 
尺寸: Nominal catches
类型: Quantity
单位: Tonnes
描述: The "nominal catches" concept refers to the landings converted to a live weight basis; the closely related concept "landings" refers to the quantities on a landed weight basis. In many fisheries the landed quantities are identical to the quantities caught, but there are many instances where the catches on board fishing vessels or factory ships are gutted, eviscerated, filleted, salted, dried, etc., or reduced to meals, oil, etc. The data on the landings of such species and products require conversion by accurate yield rates (conversion factors) to establish the live weight equivalents (nominal catches) at the time of their capture. The database does not include quantities discarded after catching.
关键词: Aquatic species
类型: Species
编码系统: Scientific name (at the species, genus, family or higher taxonomic levels);
编码系统: FAO English, French or Spanish name;
编码系统: Inter-agency 3-alpha code (as derived from the "ASFIS List of species");
编码系统: Taxonomic code (as derived from the "ASFIS List of species");
Aggregation: The species items are arranged in 50 ISSCAAP groups of species, which constitute the 9 ISSCAAP divisions (or Major groups) of the FAO 'International Standard Statistical Classification of Aquatic Animals and Plants' (ISSCAAP.) The 50 ISSCAAP groups of species can also be grouped in:
Aggregation: FAOSTAT group classification;
Aggregation: Yearbook Main Groups classification;
Aggregation: Taxonomic classification consisting of 4 levels of aggregation (Orders, Families, Genera and Species.)
关键词: Country or Area
类型: Geographic
更多信息: The term also covers territories, cities, land areas, as well as provinces, districts, enclaves, exclaves and other parts of territories or combinations of countries or areas
编码系统: FAO multilingual code of not more than twelve characters used for statistical purposes;
编码系统: Country or area names in English, French or Spanish;
编码系统: ISO 3-alpha code;
编码系统: ISO 2-alpha code;
编码系统: FAO three-digit numerical code;
Aggregation: Continents;
Aggregation: Continents and regions (each continent is divided into regions);
Aggregation: Economic class (developed countries; developing countries);
Aggregation: Economic groups (developing countries; transition markets; industrialized countries.)
关键词: Statistical divisions of the FAO Major Fishing Area 34
类型: Geographic
编码系统: FAO name in English, French or Spanish;
编码系统: FAO code.
Aggregation: The FAO Major Fishing Area 34 internationally established for fishery statistical purposes, has been split into four subareas, further sub-divided into twelve divisions:

34 1 - NORTHERN COASTAL subarea, which includes three divisions:

34 1 1 - Morocco coastal
34 1 2 - Canaries/Madeira insular
34 1 3 - Sahara coastal

34 2 - NORTHERN OCEANIC subarea, which includes only one divisions:

34 2 0 - Northern oceanic

34 3 - SOUTHERN COASTAL subarea, which includes six divisions:

34 3 1 - Cape Verde coastal
34 3 2 - Cape Verde insular
34 3 3 - Sherbro
34 3 4 - Western Gulf of Guinea
34 3 5 - Central Gulf of Guinea
34 3 6 - Southern Gulf of Guinea

34 4 - SOUTHERN OCEANIC subarea, which includes two divisions:

34 4 1 - Southwest Gulf of Guinea
34 4 2 - Southwest oceanic

Tuna catches are not allocated according to CECAF statistical divisions and are grouped together into a division named "Tunas" (34 0 0). Two other divisions, namely "Northern coastal, not known" (34 1 9) and "Not known" (34 9 0), contain catches for which is not exactly known the statistical division.


Symbols used
...Data not available; unobtainable; data not separately available but included in another category
- Nil or zero
0More than zero but less than half the unit used
neiNot elsewhere included
F FAO estimate from available sources of information
 
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