Fish and cephalopods monitoring on the Bay of Biscay and Celtic Sea continental shelves

Type Article
Acceptance Date 2021-07-13 IN PRESS
Language English
Author(s) Laffargue PascalORCID1, Delaunay Damien3, Badts VincentORCID1, Berthele Olivier1, Cornou Anne Sophie1, Garren Francois2
Affiliation(s) 1 : IFREMER, RBE-EMH research unit, Nantes, 44311, France
2 : IFREMER, RBE-STH research unit, Brest, 29280, France
3 : IFREMER, ODE-VIGIES research unit, Brest, 29280, France
Source Preprint (Copernicus GmbH) In Press
DOI 10.5194/essd-2021-146
Note a revised version of this preprint is currently under review for the journal ESSD.

The demersal fish and cephalopod communities of the continental shelves of the Bay of Biscay and the Celtic Sea have been monitored for more than 30 years by the EVHOE series of fisheries surveys. Since 1987, a total of 4247 stations have been sampled in the fall with a GOV bottom trawl in a depth range of 15 to 600 m. The main objective of these surveys is to monitor 22 benthic fish stocks and 10 cephalopods but also to provide a description of the distribution of a total of 250 fish and 50 commercial invertebrate taxa. The dataset ( provides abundance and biomass information by station for all observed taxa. Size distributions for a selection of species are also available. These data are part of a larger set of standardized European surveys that provide essential information for monitoring demersal communities in the Northeast Atlantic. We propose here a critical analysis of the dataset especially in terms of the evolution of the sampling effort and strategy as well as the taxonomic precision.

Full Text
File Pages Size Access
Preprint 21 1 MB Open access
Top of the page