Type Oceanographic cruise
Set This cruise is part of the set CGFS : CHANNEL GROUND FISH SURVEY
Ship Thalassa
Ship owner Ifremer
Dates 23/09/2015 - 15/10/2015
Chief scientist(s) TRAVERS-TROLET Morgane


IFREMER Centre de Boulogne sur Mer

150 quai Gambetta

BP 699


+33 (0)3

DOI 10.17600/15002100
Objective Fisheries resource assessment: In the Eastern English Channel (ICES zone VIId), since 1988 the CGFS cruise has enabled the collection of information required to assess stocks (age abundance indexes, recruitment indexes, size-weight relationships and maturity ogive). The objective for CGFS 2015 was to pursue the effort to collect these data which are used by European stock assessment groups. Setting up ecosystem-based monitoring: This involved taking advantage of the CGFS passage aboard RV Thalassa (Rv Gwen Drez is no longer commissioned) to start the monitoring of the pelagic habitat (physical-chemical parameters, phytoplankton, zooplankton, fish eggs) and top predators (birds and marine mammals) to complement the view of the ecosystem sampled by trawling. Exploration in the Western English Channel: continuing the effort begun during the CAMANOC 2014 cruise to sample the Western Channel in order to implement a recurrent fish assessment cruise in the near future.

Published data

Cresson Pierre, Travers-Trolet Morgane, Rouquette Manuel, Denamiel Margaux, Auber Arnaud (2018). Individual isotopic ratio and trophic levels of fish species in the Eastern English Channel. Seanoe.

Data managed by SISMER



Aubert A., Antajan Elvire, Lynam C., Pitois S., Pliru A., Vaz Sandrine, Thibault D. (2018). No more reason for ignoring gelatinous zooplankton in ecosystem assessment and marine management: Concrete cost-effective methodology during routine fishery trawl surveys. Marine Policy, 89, 100-108.

Bourdaud Pierre, Gascuel Didier, Bentorcha Abdelkrim, Brind'Amour Anik (2016). New trophic indicators and target values for an ecosystem-based management of fisheries. Ecological Indicators, 61, 588-601.