Type Oceanographic cruise
Ship Thalia
Ship owner Ifremer
Dates 14/05/2006 - 24/05/2006
Chief scientist(s) TRENKEL Verena ORCID


IFREMER - Centre de Nantes

Rue de l'Ile d'Yeu

BP 21105


+33(0)2 40.37.41. 67

DOI 10.17600/6070100

The cruise aimed to collect acoustic data to describe the spatial distribution of fish on a small-scale and in 2D. The AsterX AUV (Autonomous Underwater Vehicle) was chosen as the platform. A towed fish was also used to collect data, in order to compare the estimations. The study zone was the northern part of the Grande Vasière mudflats of the Bay of Biscay, with hake as the target species. Due to adverse weather conditions, the cruise was abandoned after three days. The related project was Ifremer ObsHal.

Data managed by SISMER



Mahevas Stephanie, Trenkel VerenaORCID, Doray MathieuORCID, Peyronnet Arnaud (2011). Hake catchability by the French trawler fleet in the Bay of Biscay: estimating technical and biological components. Ices Journal Of Marine Science, 68(1), 107-118. Publisher's official version : , Open Access version :

Doray MathieuORCID, Mahevas Stephanie, Trenkel VerenaORCID (2010). Estimating gear efficiency in a combined acoustic and trawl survey, with reference to the spatial distribution of demersal fish. Ices Journal Of Marine Science, 67(4), 668-676. Publisher's official version : , Open Access version :

References of Technical Reports

Doray, M. (2006) Compte-rendu de la Campagne Chapauv-chalutiers - Observations acoustiques. et 3-6 juillet 2006. 44p.

Mahévas, S. (2006) Compte-rendu de la CAMPAGNE Chapauv-chalutiers 17-18 Mai et 3-6 juillet 2006. 33p.

Peyronnet, A., Mahévas, S. (2006). Guide de Campagne Chapauv - 2eme Leg 3-6 Juillet 2006. 20pp.

Trenkel, V.M. (2006) Compte-rendu de la CAMPAGNE Chapauv-Thalia. Mai 2006. 31p.

References of International Seminar Communications

Doray, M., Mahévas, S., Trenkel, V. M. (2008) Direct estimation of catchability in a combined acoustic?trawl survey, with reference to fish spatial distribution. ICES Annual Science Conference, Halifax, Canada. ICES CM 2008/I:19.

Mahévas, S., Peyronnet, A., Trenkel, V.M. (2008). Catchability of the French fleet exploiting hake (Merluccius merluccius) in the Bay of Biscay. Deuxième réunion plénière du projet européen Cafe. Ispra (Italie).

Mahévas, S., Trenkel, V.M., Doray, M. (2008). Small-scale estimates of the biological and technical components of catchability. ICES Annual Science Conference, Halifax, Canada. ICES CM 2008/I:20.

References of National Seminar Communications

Mahévas, S., Trenkel, V.M., Doray, M., Vermard, Y. (2008). Une analyse de la capturabilité à grande échelle et petite échelle. Réunion Amédée Nantes. Juin 2008.

Peyronnet, A., Mahévas, S., Trenkel, V.M., Doray, M. (2006). Capturabilité de la flottille Française exploitant le Merlu (Merluccius merluccius) dans le Golfe de Gascogne. Réunion Amédée Lorient. Octobre 2006.

References of Contracts reports (European Union, FAO, Convention, Collectivities...)

Mahévas, S., Trenkel, V. (2009) Rapport scientifique de la campagne Chapauv. Rapport pour DPMA. 124pp.