Improving the analytical assessment of fish stocks by providing parameters of data quality via InterCatch
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AuthorsRodríguez-Gutiérrez, J. (José); Castro, J. (José); Velasco, E.M. (Eva María); Sampedro-Pastor, P. (Paz); Dubroca, L.
KeywordsFishery-dependent data, quality parameters, stock assessment, InterCatch
The last multiannual Community program for the collection, management and use of data in the fisheries sector (Commission Decision 2008/949/EC) stated the provision of precision levels and sampling intensities of the estimates at national level. However, the unequal compliance of this standard has hindered its application in stock assessment and the consequent scientific advice. The cost-benefit analysis of a sampling program, besides addressing logistical and economic constraints, should deepen the potential of the tools currently available. This article proposes to test the calculation, provision and use in stock assessment of extensively collected precision parameters. First, sampling intensities and coefficients of variation of fisheries-dependent parameters are calculated using the COST software, a statistical tool specifically designed to quantify uncertainty in marine sampled data. Secondly, alternative ways are explored to provide precision parameters to the stock assessment ...