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 ex-gate or farm-gate level (IMF 2014), that is, the value per unit (price) of the...
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Employment
Employment in aquaculture should be collected in sex-disaggregated form. Where possible, a breakdown by the type of activity by classification should be included with the employment data which should include all people working on aquaculture farms, hatcheries and other aquaculture...
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Aquaculture 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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Conversion factors depend primarily on the species of aquatic organism and its morphology. In addition there are a number of elements to consider:
Extent and method of processing including on board fishing vessels Size of the fish, as...
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FAO maintains records of the conversion factors used by the national authorities through a questionnaire, FISHSTAT CF1, on which the national authorities are requested to indicate the appropriate conversion factors. This is not an annual questionnaire but is distributed on...
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