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Havsfiskelaboratoriet, Karlskrona Swedish Board of Fisheries.

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En presentation över ämnet: "Havsfiskelaboratoriet, Karlskrona Swedish Board of Fisheries."— Presentationens avskrift:

1 Havsfiskelaboratoriet, Karlskrona Swedish Board of Fisheries

2 Havsfiskelaboratoriet, Karlskrona Swedish Board of fisheries structure

3 Havsfiskelaboratoriet, Karlskrona WHY KARLSKRONA? Institute of Marine Research was founded 1991 after Government decision: Importance of Baltic are for Swedish Fishery (90% av fishingzone and 70% of the catch comes from the Baltic)

4 Havsfiskelaboratoriet, Karlskrona Council Regulation (EC) No 199/2008 Commission Regulation (EC) 665/2008 EU Data Collection Regulation (DCR)

5 Havsfiskelaboratoriet, Karlskrona Pelagic (trawl/seine) e.g. herring/sprat, mackerel, blue whiting, sandeel, vendace Demersal (trawl) e.g. gadoids, witch flounder, shrimp, Norway lobster Passive gear (gillnets, fyke-nets, longlines, creels) e.g. cod, herring, salmon, eel, plaice, flounder, turbot, perch, pike, pike-perch, Norway lobster Swedish fishing fleet 1564 fishing vessels and 1880 licensed fishermen

6 Havsfiskelaboratoriet, Karlskrona Baltic Mainly small trawlers <24 m pelagic and demersal Passive gears mainly gillnet and longlines

7 Havsfiskelaboratoriet, Karlskrona Sampling of Cod per ICES SD

8 Havsfiskelaboratoriet, Karlskrona Swedish Cod Fishery april Swedish Cod Fishery april 2007

9 Havsfiskelaboratoriet, Karlskrona Active gear (eg Trawl) Passive gear (gillnet) Combined sampling Gear type Discard Cod

10 Havsfiskelaboratoriet, Karlskrona Ageing by analyzing Cod otoliths

11 Havsfiskelaboratoriet, Karlskrona Transversal cut of Cod otolith – 3 years old

12 Havsfiskelaboratoriet, Karlskrona ICES Working group –International Co- operation Sampling commercial fisheries Loggbooks Sales slip Surveys: R/V ARGOS Length measurments Otolith samples Total catch per age group Biological advice Negotiations Total allowable catch (TAC) Stock assessment – workflow

13 Havsfiskelaboratoriet, Karlskrona FISK POPULATIONS MODELL Population Biomass Recruitment Growth Immigration Natural mortality Fishery mortality Emigration

14 Havsfiskelaboratoriet, Karlskrona ? Stock assessment by VPA Virtual population analysis? Osäkerheten i beräkningen minskar bakåt i modellen

15 Havsfiskelaboratoriet, Karlskrona Antal fiskar per åldersgrupp i fångsten Längdmätning (många) Åldersbestämning (få) Längd (cm) Ålder ”Nyckel”

16 Havsfiskelaboratoriet, Karlskrona Fishery dependent data vs Scientific Surveys

17 Havsfiskelaboratoriet, Karlskrona

18 Torsk beståndets utveckling Ö Bornholm

19 Havsfiskelaboratoriet, Karlskrona EU management plan for E Baltic Cod  Goal Fishing mortality F=0,3  Maximum allowed increase of TAC annually 15% until goal is reached  Maximum allowed decrease in TAC 10% until goal is reached

20 Havsfiskelaboratoriet, Karlskrona Figure Cod in Subdivisions 25 to 32. Landings, fishing mortality, recruitment, and SSB.

21 Havsfiskelaboratoriet, Karlskrona Östersjötorsk (SD25-32) Scenario with F(status quo)=0,5

22 Havsfiskelaboratoriet, Karlskrona Landings 2010 ~ 56t tonnes Östersjötorsk (SD25-32) Scenario enligt förvaltningsplan max ökning 15%

23 Havsfiskelaboratoriet, Karlskrona Thank you!


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