Havsfiskelaboratoriet, Karlskrona Swedish Board of Fisheries

Havsfiskelaboratoriet, Karlskrona Swedish Board of fisheries structure

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)

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

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

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

Havsfiskelaboratoriet, Karlskrona Sampling of Cod per ICES SD

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

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

Havsfiskelaboratoriet, Karlskrona Ageing by analyzing Cod otoliths

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

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

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

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

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

Havsfiskelaboratoriet, Karlskrona Fishery dependent data vs Scientific Surveys

Havsfiskelaboratoriet, Karlskrona

Torsk beståndets utveckling Ö Bornholm

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

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

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

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

Havsfiskelaboratoriet, Karlskrona Thank you!