Assessing the impact of using bioeconomic modelling techniques to help reduce discards in the fishery.

MINOUW partner & Lead scientist:

EHU/UPV (Universidad del País Vasco / Euskal Herriko Unibertsitatea), María J. Gutiérrez

Fishing method and species:

Gillnetters, demersal trawlers, purse-seiners, hooks and lines and polyvalent artisanal fishing boats. The species targeted is primarily Hake (Merluccius merluccius), but also Megrim (Lepidorhombus whiffiagonis), Four Spot Megrim (Lepidorhombus boscii), White Anglerfish (Lophius piscatorius), Mackerel (Scomber scombrus), Southern Horse Mackerel (Trachurus tra-churus), Western Horse Mackerel (Trachurus trachurus) and blue whiting (Trachurus).

What activities is the MINOUW project carrying out?
  • Extending the bioeconomic model SASOM (Stochastic Age-Structured Optimization Model) to include discard analysis.
  • Assessing the effects on captures and discards of changing the fishing technology (selectivity parameters) using the bioeconomic model SASOM
  • Assessing the effects on captures and discards of changing the prices (ban selling policies) using the bioeconomic model SASOM
What outcomes are expected?
  • Build understanding of how changes in fishing technologies that reduce selectivity can alleviate the problem of discards in the fishery.
  • Compare the effectiveness of this type of policy with alternative market policies. Advise policy makers on the most effective fishery policies.

PDFs summaries of results can be downloaded here once they are available.