Fig. 1: Migration strategies of herring in a dynamic environment.
From: Herring spawned poleward following fishery-induced collective memory loss
a, The study area, highlighting the poleward shift in main spawning from Møre to Lofoten. b, The main currents of the area. Data are from a previous study51. c, Seasonal migrations (mig.) between feeding, wintering and spawning grounds during 1988–2020. Note that NSS herring spawn at hard substrates down to 250 m depth. d, The migration pattern during 2021–2024. These dynamics in migration patterns are also visualized empirically in e. e, The spatiotemporal dynamics in the herring fishery. The aggregated Norwegian, Icelandic and Faroese catch (above 80% of total catch) within each 0.5° latitude, 1° longitude rectangle by periods seasons is shown. Rectangles are coloured according to the scale at the bottom right. Note that a change in landings during feeding season from 2011 onwards reflects fishing strategies in a period with quota reductions and not availabilities.
