Havsfiskelaboratoriet, Karlskrona

Swedish Board of Fisheries

Swedish Board of Fisheries

Havsfiskelaboratoriet, Karlskrona

Swedish Board of fisheries structureSwedish Board of fisheries structure

Havsfiskelaboratoriet, Karlskrona

WHY 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

Council Regulation (EC) No 199/2008

Commission Regulation (EC) 665/2008

EU Data Collection Regulation (DCR)

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

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 fleetSwedish fishing fleet1564 fishing vessels and 1880 licensed fishermen1564 fishing vessels and 1880 licensed fishermen

Havsfiskelaboratoriet, Karlskrona

BalticBaltic

Mainly small trawlers <24 m pelagic and demersal

Passive gears mainly gillnet and longlines

Mainly small trawlers <24 m pelagic and demersal

Passive gears mainly gillnet and longlines

Havsfiskelaboratoriet, Karlskrona

Sampling of Cod per ICES SDSampling of Cod per ICES SD

Havsfiskelaboratoriet, Karlskrona

Swedish Cod Fishery april 1996-2003

Swedish Cod Fishery april 2007

Havsfiskelaboratoriet, Karlskrona

Active gear (eg Trawl)Active gear (eg Trawl)

22

33

11

44

55

Passive gear (gillnet)Passive gear (gillnet)

22

33

11

44

55

Combined samplingCombined sampling

Gear typeGear type

DiscardDiscard DiscardDiscard

CodCod

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

ICES Working group –International Co-operation

Sampling commercial

fisheries

Sampling commercial

fisheries

Loggbooks

Sales slip

Loggbooks

Sales slip

Surveys:

R/V ARGOS

Surveys:

R/V ARGOS

Length measurments

Otolith samples

Length measurments

Otolith samples

Total catch per age group

Total catch per age group

Biological adviceBiological advice

Negotiations

Total allowable catch (TAC)

Negotiations

Total allowable catch (TAC)

Stock assessment – workflow

Havsfiskelaboratoriet, Karlskrona

FISK POPULATIONS MODELLFISK POPULATIONS MODELL

PopulationBiomass

Recruitment

Growth

Immigration

Natural mortality

Fishery mortality

Emigration

Havsfiskelaboratoriet, Karlskrona

11

22

33

44

10+10+

.

.

.

.

2005200520022002 20032003 2004200420012001

??

Stock assessment by VPA Virtual population analysis?

Stock assessment by VPA Virtual population analysis?

Osäkerheten i beräkningen minskar bakåt i modellen

Osäkerheten i beräkningen minskar bakåt i modellen

Havsfiskelaboratoriet, Karlskrona

Antal fiskar per åldersgrupp i fångstenAntal fiskar per åldersgrupp i fångsten

Längdmätning (många)Längdmätning (många)

Åldersbestämning (få)Åldersbestämning (få)

2

2 1

2 2

1 3

1 2 1

1 2 1

2 2

2 2 1

3838

Längd (cm)

Längd (cm)

ÅlderÅlder

1 2 3 4 5 ----- 10+

1 2 3 4 5 ----- 10+

4040

4242

4444

4646

4848

5050

3636

”Nyckel””Nyckel”

Havsfiskelaboratoriet, Karlskrona

Fishery dependent data vs Scientific Surveys

Fishery dependent data vs Scientific Surveys

33

2233

44

5+5+

22

33

Havsfiskelaboratoriet, Karlskrona

Havsfiskelaboratoriet, Karlskrona

Torsk beståndets utveckling Ö Bornholm

Torsken i Östersjön 1966-2007

0

200000

400000

600000

800000

1000000

1200000

1966 1971 1976 1981 1986 1991 1996 2001 2006

biomassa

lekbiomassa

gränsvärde (bpa)

gränsvärde (blim)

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

Landings

050

100150200250300350400450

1966 1971 1976 1981 1986 1991 1996 2001 2006

Lan

din

gs

in 1

000

t

Fishing Mortality

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1966 1971 1976 1981 1986 1991 1996 2001 2006

F(a

ges

4-7

)

F

Flim

Fpa

Recruitment (age 2)

0100200300400500600700800900

1966 1971 1976 1981 1986 1991 1996 2001 2006

Rec

ruit

men

t in

mill

ion

s

Spawning Stock Biomass

0

100

200

300

400

500

600

700

800

1966 1971 1976 1981 1986 1991 1996 2001 2006

SS

B in

100

0 t

SSB

Havsfiskelaboratoriet, Karlskrona

Landings

0

20000

40000

60000

80000

100000

120000

2008 2009 2010 2011 2012 2013 2014 2015

Yield

SSB

0

50000

100000

150000

200000

250000

300000

2008 2009 2010 2011 2012 2013 2014 2015

SSB Blim Bpa

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

Mean Fishing Mortality

0,000

0,100

0,200

0,300

0,400

0,500

0,600

2008 2009 2010 2011 2012 2013 2014 2015

Havsfiskelaboratoriet, Karlskrona

Mean Fishing Mortality

0,000

0,100

0,200

0,300

0,400

0,500

0,600

2008 2009 2010 2011 2012 2013 2014 2015

SSB

0

100000

200000

300000

400000

500000

600000

2008 2009 2010 2011 2012 2013 2014 2015

SSB Blim Bpa

Landings

0

20000

40000

60000

80000

100000

120000

2008 2009 2010 2011 2012 2013 2014 2015

Yield

Landings 2010 ~ 56t tonnes

Östersjötorsk (SD25-32)Scenario enligt förvaltningsplan max ökning 15%

Havsfiskelaboratoriet, Karlskrona

Thank you!Thank you!