Coordinating Working Party on Fishery Statistics (CWP)
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 Product weight: Weight of a fish product, often measured at-sea at the conclusion of processing. Information on product type, product homogeneity and conversion factors is also required in order to interpret product weight. As for landed weight, relevant when calculating... More
Methodological standards #CWP standards#Catch and landings#Glossary#Product weight#Definitions#International standards
 Landed weight: Weight of a product at the time of landing, regardless of the state in which the product is landed. That is, the fish may be inter alia whole, gutted or filleted. Consequently, this measure is of limited use... More
Methodological standards #CWP standards#Catch and landings#Glossary#Landed weight#Definitions#International standards
  Nominal catch (also referred to as nominal landings): Landed weight converted to a live weight basis often by use of a conversion factor. Nominal catch is often referred to as the live weight equivalent of the landed weight or... More
Methodological standards #CWP standards#Catch and landings#Glossary#Nominal catch#Definitions#International standards#Statistical concepts
  Discarded catch: Estimated component of the catch which is the total live weight of undersized, unsaleable or otherwise undesirable whole fish and other aquatic organisms which are discarded at the time of the capture or shortly afterwards (refer catch... More
Methodological standards #CWP standards#Catch and landings#Glossary#Discarded catch#Definitions#International standards#Statistical concepts
  Bycatch: Component of the catch which represents non-targeted fish associated with the catch of the target species or group towards which fishing effort is directed, or other aquatic organisms taken incidentally during the course of fishing (e.g. birds, mammals,... More
Methodological standards #CWP standards#Catch and landings#Glossary#Bycatch#Definitions#International standards#Statistical concepts
 Data collection In industrialized fisheries catches are often recorded in logbooks and these data may be used to derive catch statistics. However, the accuracy of weights measured at-sea and recorded in logbooks depends on the available weighing technology and/or the experience... More
ConceptsMethodological standards #Catch and landings#Glossary#Practices and guidelines#Definitions
 In capture fishery and aquaculture statistics,  conversion factors are often used when converting the volume or weight of a product at one stage in the production chain to its volume or weight at another stage in the chain. Perhaps the... More
Concepts #Glossary#Conversion factors#Definitions
 All countries or areas have official and formal designations, many of which are not well suited for use in statistical databases and publications, particularly in tabulations and graphs. These designations are therefore often simplified. The list of countries or areas... More
Classifications and Metadata Standards #Practices and guidelines#Simplification#Definitions#Statistical concepts
 The STATLANT system of questionnaires allows the reporting of data at varying levels of precision (refer also Fishing effort) including: STATLANT A questionnaires cover the reporting of annual catch data, requesting a breakdown of catches by species and statistical sub-division of... More
Methodological standards #On the CWP Handbook#CWP standards#STATLANT#Simplification#Catch and landings#International standards#Definitions
 STATPAC questionnaires cover the reporting of annual catch data, requesting a breakdown of catches by species and selected FAO major fishing area in the Southeast Pacific Ocean. In addition, the FISHSTAT questionnaires are used by FAO and other CWP Members... More
Methodological standards #On the CWP Handbook#CWP standards#Data collection questionnaires#Fisheries Statistics#International standards#Definitions
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