Aquaculture production core variables
The core variables identified for aquaculture are restricted to only two items as they are the most widely available. The core variables to be collected are:
Gross value of production Employment
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Gross value of production
The gross value of the production is normally collected together with production quantity statistics and the value is optimally collected at the farm-gate level (IMF 2014), that is, the value per unit (price) of the product at...
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Employment
Employment in fisheries should be collected in sex-disaggregated form. A further note should be made that the term fisher (refer also ILO, 2012) should not only include those operating from fishing vessels but also those fishers operating land-based fishing gears...
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Fishery production additional variables
The additional variables allow for the calculation of total revenue and total costs for the aquaculture operations. This allows derivation of the economic profitability of the aquaculture sector which is judged from information on the net revenue...
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Total revenue
Total revenue is composed of several variables.
Gross sales of the aquaculture production part of the core variables (refer above). Direct subsidies - including direct payments; excluding social benefit payments and indirect subsidies e.g. reduced duty on inputs...
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Total costs
Total costs is composed of several variables. Cost data can be obtained from the financial records of the aquaculture operation or enterprises and these data are mostly difficult to obtain. Even when such data are available, they are...
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Capital value
Capital value includes two key components: the value of physical capital (depreciation or historical value) and the non-tangible assets.
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Remuneration
Remuneration provides an important and clear estimation of the contribution to livelihood gained from employment in the sector. The total remuneration includes social security costs for all employees including the owner. This is often the same value as that...
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Live weight: Total weight of fish when captured, estimated as if it was alive and prior to processing.
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Retained catch: Estimated component of the catch which is retained on board during a fishing trip (refer catch concept diagram). An estimate of the retained catch is reported as total live weight of fish retained and in some fisheries the...
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