LANGOLF 2009

Name: LANGOLF 2009
Start: 2009-05-12
End: 2009-05-30
Location: Bay of Biscay

Type	Oceanographic cruise
Set	This cruise is part of the set LANGOLF
Ship	Gwen Drez
Ship owner	Ifremer
Dates	12/05/2009 - 30/05/2009
Chief scientist(s)	SALAUN Michèle, DIMEET Joël
	SCIENCES ET TECHNOLOGIES HALIEUTIQUES - LORIENT 8 rue François Toullec 56100 Lorient +33(0)2 97 87 38 00
DOI	10.17600/9050040
Objective	Calculating Nephrops stock abundance index in the Grande Vasière (Bay of Biscay), size and sex structure; spatial distribution of population per sedimentary unit. Macroscopic observation of stages of sexual maturity in females. Abundance index estimations for related species. Calcified parts were removed to determine the age of species of commercial interest whose stock dynamics are being monitored. Sexual maturity stages in sole, angler fish and hake. Temperature, salinity and depth logs taken (Cruises FIS).

Sea/Ocean

Bay of Biscay

(Grande Vasière)

Ports

Port of departure : Lorient (France)

Port of return : Lorient (France)

Scientific Authority

SCIENCES ET TECHNOLOGIES HALIEUTIQUES - LORIENT

8 rue François Toullec

56100 Lorient

+33(0)2 97 87 38 00

Participating bodie(s)

IFREMER STH

Discipline(s)

FISHERIES

Code	Label	Quantity	PI
B19	Demersal fish Soles, Baudroies, raies, cardines etc ...	4500 specimens	SALAUN Michèle
B21	Crustaceans Langoustines : mensurations par sexe	8900 specimens	SALAUN Michèle
B90	Other biological/fisheries meas. Prélèvements otholites, illicia, maturités	1315 specimens	SALAUN Michèle
D90	Other physical oceanographic meas. Température+salinité avec sonde NKE de type STPS.	72 stations	SALAUN Michèle

Summary of measurements

-Bottom trawling: 76 trawl hauls.
-Temperature and salinity measurements: 22 stations (temperature + salinity) and 50 stations (temperature).
-Size measurements, counting and weighing of Nephrops.
-Size measurements, counting and weighing of associated species.
-Otolith and illicia samples taken on species whose stocks are being monitored.
-Maturity stages of Nephrops, sole, angler and hake recorded.

Location map

Positionning system

Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84

Positioning system : GPS naturel

Data managed by SISMER

Bibliography

Publications

Benzinou Abdesslam, Carbini Sebastien, Nasreddine Kamal, Elleboode Romain, Mahe Kelig (2013). Discriminating stocks of striped red mullet (Mullus surmuletus) in the Northeast European seas using three automatic shape classification methods. Fisheries Research, 143, 153-160. https://doi.org/10.1016/j.fishres.2013.01.015

References of Technical Reports

Talidec Catherine , Augris Claude, Rouyer Armelle, Brind'Amour Anik , Pitel-Roudaut Mathilde , Tanguy Nina, Woillez Mathieu , Caill-Milly Nathalie , de Casamajor Marie-Noelle , Simplet Laure (2013). Observation des ressources halieutiques par les campagnes scientifiques françaises. Façades "Bretagne" et "Sud-Gascogne". https://archimer.ifremer.fr/doc/00189/30006/

Salaun Michele (2013). Campagne LANGOLF. Manuel des protocoles de la campagne halieutique LANGOLF. RBE/STH/LBTH 2013.01.