ISOBENT OCT

Name: ISOBENT OCT
Start: 2009-10-01
End: 2009-10-05
Location: Bay of Brest

Type	Oceanographic cruise
Ship	Côtes De La Manche
Ship owner	CNRS until 2019 - IFREMER since 2020
Dates	01/10/2009 - 05/10/2009
Chief scientist(s)	GRALL Jacques
	LABORATOIRE DES SCIENCES DE L'ENVIRONNEMENT MARIN - UMR 6539 Technopôle Brest-Iroise Rue Dumont d'Urville 29280 Plouzané +33(0)2 98 49 86 40 https://www-iuem.univ-brest.fr/lemar/
DOI	10.17600/9480160
Objective	The general objective of ISOBENT is to assess the intensities and spatial scales at which both direct telluric influences and benthic processes play a significant role in the general functioning of the ecosystem's food web.

Sea/Ocean

Bay of Brest

Celtic Sea

(Mer d'Iroise)

Ports

Port of departure : Brest (France)

Port of return : Brest (France)

Scientific Authority

LABORATOIRE DES SCIENCES DE L'ENVIRONNEMENT MARIN - UMR 6539

Technopôle Brest-Iroise

Rue Dumont d'Urville

29280 Plouzané

+33(0)2 98 49 86 40

https://www-iuem.univ-brest.fr/lemar/

Participating bodie(s)

LEMAR UMR UBO/CNRS, IUEM

Discipline(s)

PHYSICAL OCEANOGRAPHY
BIOLOGICAL OCEANOGRAPHY
CHEMICAL OCEANOGRAPHY
ENVIRONMENT

Code	Label	Quantity	PI
B01	Primary productivity	-	GRALL Jacques
B02	Phytoplankton pigments (eg chloroph	-	GRALL Jacques
B20	Molluscs	-	GRALL Jacques
B71	Particulate organic matter (inc POC	-	GRALL Jacques
B73	Sediment traps	-	GRALL Jacques
G01	Dredge	-	GRALL Jacques
G02	Grab	-	GRALL Jacques
G04	Core soft bottom	-	GRALL Jacques
H09	Water bottle stations	-	GRALL Jacques
H10	CTD stations	-	GRALL Jacques
H11	Subsurface meas. underway (T,S)	-	GRALL Jacques
H32	Isotopes	-	GRALL Jacques
P01	Suspended matter	-	GRALL Jacques

Summary of measurements

-Bottom and surface water sampling: Niskin bottles.
-CTD profiles.
-Sediment samples taken with Reineck corer and Shipeck grab.
-Dredging: clam dredge, Rallier du Baty dredge, scallop dredge.
-Trawl hauls: beam trawl, otterboard trawl.

Location map

Bibliography

Publications

Nerot Caroline, Meziane Tarik, Schaal Gauthier, Grall Jacques, Lorrain Anne, Paulet Yves-Marie, Kraffe Edouard (2015). Spatial changes in fatty acids signatures of the great scallop Pecten maximus across the Bay of Biscay continental shelf. Continental Shelf Research, 109, 1-9. https://doi.org/10.1016/j.csr.2015.08.032

Mortillaro J. M., Schaal G., Grall Jacques, Nerot C., Brind'Amour Anik , Marchais V., Perdriau M., Le Bris H. (2014). Comparative study of isotopic trends in two coastal ecosystems of North Biscay: A multitrophic spatial gradient approach. Estuarine Coastal And Shelf Science, 136, 149-156. Publisher's official version : https://doi.org/10.1016/j.ecss.2013.11.025 , Open Access version : https://archimer.ifremer.fr/doc/00167/27847/

Nerot Caroline, Lorrain Anne, Grall Jacques, Gillikin David P., Munaron Jean-Marie, Le Bris Herve, Paulet Yves-Marie (2012). Stable isotope variations in benthic filter feeders across a large depth gradient on the continental shelf. Estuarine Coastal And Shelf Science, 96, 228-235. https://doi.org/10.1016/j.ecss.2011.11.004