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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 10th Sept 2026, 07:08:09pm CEST (Norway)

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Daily Overview

Session

Fisheries and resource management
Location: Auditorium G
Session Chair: Marie-Catherine Riekhof, Kiel University

Presentation 1

Does the choice of effort measure matter?

Yuanming Ni, Arnt Ove Hopland, Sturla Kvamsdal

Samfunns- og næringslivsforskning AS, Norway

Discussant: Maria J. Quinteros (Universidad de Santiago de Chile)

Fishing effort is key to assessing performance and sustainability in fisheries, yet its definition varies. Using landing data, vessel monitoring, and satellite observations, we compare fishing effort measures at the trip level. A two-stage estimation of a generalized fishery model is applied to the Northeast Atlantic cod fishery (multi-gear) and the purse seine fleet (pelagic species). Correlation among effort measures is much higher for cod, but maximum sustainable yield estimates are more consistent for purse seine fishery. Despite accounting for gear-, area-, and season-effects, cod fishery parameters remain sensitive to effort definitions, highlighting the need for caution in multi-gear fisheries.