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Self management of vendace fishery, Bothnian Bay

Self management of vendace fishery, Bothnian Bay. Right-based management in Sweden. Teija Aho, Swedish Board of Fisheries Institute of Coastal Research, Öregrund, Sweden. Self management of vendace fishery, Bothnian Bay. Trawl fishery for vendance Coregonus albula

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Self management of vendace fishery, Bothnian Bay

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  1. Self management of vendace fishery, Bothnian Bay Right-based management in Sweden • Teija Aho, • Swedish Board of Fisheries • Institute of Coastal Research, • Öregrund, Sweden Institute of Coastal Research

  2. Self management of vendace fishery, Bothnian Bay Trawl fishery for vendance Coregonus albula Fishery started in 1960s Small-scale coastal fishery Pair-trawling max 40 vessels Spawning aggregations (roe for consumption) Institute of Coastal Research

  3. Self management - vendace trawl fishery Total biomass SSB Landings SBF about to close the fishery! Institute of Coastal Research

  4. Self management of vendace trawl fishery • Goal: to create a sustainable fishery for vendace • Project started autumn 2000, fishers initiative • All 40 (37 in 2007) vessels with fishing licenses included • Fishers steering group: six fishers • Coordination and decisions of management actions during fishing Institute of Coastal Research

  5. Fishers management - structure Trawl fishers - deliver log-books and sampling data • Swedish Board of Fisheries, local dept, • fishers independent sampling Fishers steering group - management decisions - cooperation with Inst. Coastal Res. • Swedish Board of Fisheries, Control and Resource depts. • log books • fishing licenses • Swedish Board of Fisheries, Inst. of Coastal Research • management advice • age and population analyses Institute of Coastal Research

  6. Fishers sampling • One sample per haul • One basket unsorted fish, randomly • Each sample sorted and weighted • adult vendace >12,5 cm • juvenile vendace • whitefish • herring • other species Institute of Coastal Research

  7. Fishers sampling - protocol Institute of Coastal Research

  8. Fishers sampling • Provides : • - total catch • catch composition • effort • => basis for stock assessment (VPA) Institute of Coastal Research

  9. Fishers management Fishers management - structure Trawl fishers - deliver log-books and sampling data Fishers steering group - management decisions - cooperation with Inst. Coastal Res. • Swedish Board of Fisheries, local dept, • fishers independent sampling • Swedish Board of Fisheries, Control and Resource depts. • log books • fishing licenses • Swedish Board of Fisheries, Inst. of Coastal Research • management advice • age and population analyses Institute of Coastal Research

  10. Fishers independent sampling • Swedish Board of Fisheries sampling: • random sampling of individuals, ~ 10 kg • length, weight, sex, maturation status, gonad weight, otoliths (age) • age determination Provides age distribution and population characteristics (basis for assessment) Institute of Coastal Research

  11. Fishers management - structure Trawl fishers - deliver log-books and sampling data Fishers steering group - management decisions - cooperation with Inst. Coastal Res. • Swedish Board of Fisheries, local dept, • fishers independent sampling • Swedish Board of Fisheries, Control and Resource depts. • log books • fishing licenses • Swedish Board of Fisheries, Inst. of Coastal Research • management advice • age and population analyses Institute of Coastal Research

  12. Inst Coastal Res. • Supports steering group: • Stock assessment • Research activities, gear development • Management advice • Project administration Institute of Coastal Research

  13. Fishers management Fishers management - structure Trawl fishers - deliver log-books and sampling data Fishers steering group - management decisions - cooperation with Inst. Coastal Res. • Swedish Board of Fisheries, local dept, • fishers independent sampling • Swedish Board of Fisheries, Control and Resource depts. • log books • fishing licenses • Swedish Board of Fisheries, Inst. of Coastal Research • management advice • age and population analyses Institute of Coastal Research

  14. Fishers steering group • Management actions: • Co-operation and communication among fishers • Co-operation with ICR for e.g. sampling, gear development • Reduction of fishing time CPUE Trawling hours Institute of Coastal Research

  15. Management actions: Voluntary no-take areas Legal reserves Fishers reserves Trawl border Institute of Coastal Research

  16. Management actions: Gear development • Goal - to reduce proportion of juvenile vendace in catches by - co-operation between fishers, researchers and managers • selective panels, fixed grids, and behaviour studies released retained Institute of Coastal Research

  17. Success story? Tons Stock biomass Recruits Millions Project start Institute of Coastal Research

  18. Trawl haul 1998 Trawl haul 2002 Landings, tons Institute of Coastal Research

  19. Success story? YES! • Spawning biomass has increased (mainly due to good recruitment) • Landings have increased • Improved gear selectivity • Good communication between fishers, scientists and managers • Self-management is possible! • Self-management is now the standard for the vendace fishery • Allow time to develop confidence and trust among involved partners Institute of Coastal Research

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