1. 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

2. 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
Titel der Veranstaltung

3. 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
Titel der Veranstaltung

4. 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
Titel der Veranstaltung

5. 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
Titel der Veranstaltung

6. 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
Titel der Veranstaltung

7. 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
Titel der Veranstaltung

8. 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

9. 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
Titel der Veranstaltung

10. Thanks for your attention !!!
Simons, S. L., Döring, R., and Temming, A 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:
XXII EAFE CONFERENCE
Sarah Simons