Towards a new sustainable fishing adventure

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Presentation transcript:

Towards a new sustainable fishing adventure Towards a new sustainable fishing adventure? – the snow crab in the Barents Sea Carsten Hvingel, Institute of Marine Research Norway Credit to: Jan Sundet, Ann Merete Hjelset, Cecilie Hansen and Trude Thangstad Not going to answer Raise this important question

New species in the Barents Sea Ecosystem The Snow crab The questions: -Resource? -Pest? -Management?

Resource? Stock is increasing Fishery starts

…and continues to spread Resource? 2021? First recording in 1996

The prognosis: Resource? Catch/yr Billion NOK/yr Catch potential fully developed fishery (1000t)

Unknown ecosystem impact Pest? Unknown ecosystem impact Creation of ecosystem «imbalance» New parasites, deceases Displacement of other species Trophic interactions What will happen to the existing fisheries? The big question

Modelled effects + ÷ Plankton: Bunndyr: 7-27% Pest? Modelled effects + Plankton: Bunndyr: 7-27% Torsk, hyse, lodde: 10-30% ÷

Resource management Adequate? Assumptions: Optimally managed exploitation …and no «surprises» Predicted

Adequate? Resource management Predicted Gold rush trap Actual

Status: The short version… Known: Large economic potential Risk: Ecosystem response on Other species The snow crab himself The gold rush trap Action Exploitation control (management plan) Research related to resource dynamics

Thanks for your attention!

The distribution of the fishery Bonus material