Special Session: Landing Obligation Modelling fishers’ response to discard prevention strategies: The case of the North Sea saithe fishery Sarah Simons, Ralf Döring, Axel Temming XXII EAFE CONFERENCE Special Session: Landing Obligation Salerno, 29th April 2015
The North Sea saithe fishery Introduction Materials & Methods Results & Discussion Summary Annual landings values of 15 mio € EU-Norway long-term management plan Total Allowable Catches (TACs) Effort control (1.5 % rule) Catch share of saithe by nation (2013) Source: ICES advice 2014 XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
The North Sea saithe fishery Introduction Materials & Methods Results & Discussion Summary TAC saithe is 3x higher than TAC cod Source: ICES advice 2014 Spatial overlap of areas with high cod and saithe biomass (Simons et al., 2014) XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
Scenarios Non-flexible Flexible 200 kg 1000 kg 1:5 2€/kg 0.9€/kg 400€ Introduction Materials & Methods Results & Discussion Summary Non-flexible Flexible 200 kg 1000 kg 1:5 Saithe Quota 2€/kg 0.9€/kg 400€ 900€ Cod Quota -500€ XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
A spatially explicit bio-economic modelling approach Introduction Materials & Methods Results & Discussion Summary Fuel price Capital Cost Fixed Cost Fuel Cost Crew Cost Variable Cost Change of effort allocation pattern Profit maximization SSB + Recruitment Cobb-Douglas Fishing mortality Catch Revenue Fleet size Fish Price Landings Discards XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
The spatio-temporal distribution of fish stocks Introduction Materials & Methods Results & Discussion Summary Seasonal migrations Q 1 Q 2 Quarter 4 Quarter 3 Quarter 1 Quarter 2 Q 3 Q 4 XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
The impact of a landing obligation Introduction Materials & Methods Results & Discussion Summary Benefical for cod but negative for saithe Cod Saithe Spatial overlap cod-saithe 8% 41% 6% 4% Economic cosequences depend on cod quota availability XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
Flexible-system with quota exchange Introduction Materials & Methods Results & Discussion Summary 1:5 Cod Saithe Success highly dependent on correct setting of exchange ratio XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015
In summary… Multi-species effects of landing obligation Introduction Materials & Methods Results & Discussion Summary Multi-species effects of landing obligation Species distribution in stock assessment Up to 23% reduction in net profits Economic consequences depend on available cod quota Questions compliance of fishers Quota exchange = more flexibility for fishers Success highly dependent on correct setting of exchange ratio Requires continuous monitoring and adjustment XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015 Titel der Veranstaltung
Thanks for your attention !!! Simons, S. L., Döring, R., and Temming, A. 2014. Modelling fishers' response to discard prevention strategies: the case of the North Sea saithe fishery. ICES Journal of Marine Science: Journal du Conseil.fsu229/doi:10.1093 XXII EAFE CONFERENCE Sarah Simons (sarah.simons@ti.bund.de) 29.04.2015