Long-term changes in the French fisheries for crustaceans in the Eastern English Channel: 1901 to 2020

Abstract

Abstract Small-scale crustacean fisheries in the English Channel have existed for centuries but have never been formally assessed; hence, concerns about their ecological and socio-economic sustainability could be raised. This study explores trends in this fishery’s landings from 1901 to 2021, based on historical and recent landings data in two of the main administrative fishing divisions of the area, Cherbourg and Boulogne-sur-Mer quartiers. Crustacean fisheries were reported for both divisions from the beginning to the end of the time period considered, demonstrating that a dedicated crustacean fishery existed in the area since at least the 20th century. The species composition of the crustacean’s catch (e.g., edible crab, Cancer pagurus Linnaeus, 1758; European lobster, Homarus gammarus (Linnaeus, 1758); European spider crab, Maja brachydactyla Balss, 1922) was almost impossible to track before the 2000s. Important fluctuations were observed in catch volume reports along time that might be related to two phenomena: technological advances that would have improved the fishery performances and the decline of some previously targeted species that might have led to a transfer in fishing effort.