Sea/Ocean |
North Sea (Southern North Sea) |
Ports |
Port of departure : Lorient (France)
Port of return : Boulogne (France)
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Project |
INTERNATIONAL BOTTOM TRAWL SURVEY (IBTS) - FRANCE,INFORMATION SYSTEMS, ECONOMY, DIAGNOSIS OF RESOURCES |
Scientific Authority |
CENTRE MANCHE-MER DU NORD IFREMER Centre de Boulogne sur Mer 150 quai Gambetta 62321 BOULOGNE-SUR-MER CEDEX +33 (0)3 21.99.56.00 https://www.ifremer.fr/fr/implantations/l-ifremer-en-manche-mer-du-nord |
Participating bodie(s) |
IFREMER/Boulogne, IFREMER/Brest, IFREMER/Nantes, Université du Havre, Université de liège, Université de Lille |
Discipline(s) |
- CHEMICAL OCEANOGRAPHY
- ENVIRONMENT
- BIOLOGICAL OCEANOGRAPHY
- FISHERIES
- PHYSICAL OCEANOGRAPHY
Code |
Label |
Quantity |
PI |
B02 |
Phytoplankton pigments (eg chloroph |
81 stations |
LEFEBVRE Alain |
B08 |
Phytoplankton |
- |
LEFEBVRE Alain |
B09 |
Zooplankton |
- |
LEFEBVRE Alain |
B19 |
Demersal fish Sorting, weighing, measuring |
72 specimens |
VERIN Yves |
D90 |
Other physical oceanographic meas. Age determination for the main commercial species |
3290 specimens |
VERIN Yves |
G73 |
Single-beam echosounding EK500 sounder on MOVIES+ in routine (trawling and transit) |
- |
VERIN Yves |
H09 |
Water bottle stations |
81 stations |
LEFEBVRE Alain |
H10 |
CTD stations 70 SBE19 Bathysondes (Temperature, Salinity) and 73 Isy Probe (Temperature, Salinity, Dissolved O2) |
69 stations |
VERIN Yves |
H21 |
Oxygen |
69 stations |
LEFEBVRE Alain |
H22 |
Phosphate |
81 stations |
LEFEBVRE Alain |
H24 |
Nitrate |
81 stations |
LEFEBVRE Alain |
H25 |
Nitrite |
81 stations |
LEFEBVRE Alain |
H26 |
Silicate |
81 stations |
LEFEBVRE Alain |
H71 |
Surface measurements underway (T,S) Thermosalinometer |
- |
VERIN Yves |
H76 |
Ammonia |
- |
LEFEBVRE Alain |
M06 |
Routine standard measurements Wind and weather stations |
- |
VERIN Yves |
P01 |
Suspended matter |
72 stations |
LEFEBVRE Alain |
|
Summary of measurements |
- -72 bottom trawling (GOV 36/47 trawl) made in 58 statistical rectangles
-Weighing and measurement of each species caught, determination of sex, stage of sexual maturity and otolith samples (3,300) taken on the following species: cod, whiting, haddock, sprat, herring, Norway pout and plaice. -70 vertical temperature and salinity profiles taken using the CTD SBE 19 and Ysi probe (T, S, dissolved O2). -73 hydro samples taken for analysis (nutrients (N,P,Si), NH4 (Ammonium), chlorophyll, suspended matter, organic and particulate nitrogen and carbon). -69 stations with larva nets (calculation of a larval abundance index for herring and sprat). -Recording of acoustic data during the trawl hauls and on trips between stations. -65 zooplankton and phytoplankton stations. -In the framework of the European RASER (Reproduction And Stock Evaluation for Recovery) program coordinated by the CEFAS in Lowestoft, assessment of cod broodstock potential (on 102 cod) with respect to its geographic distribution. -Genetic structuring of whiting in the North Sea: samples taken for studies carried out by the University of Brest. -Herring samples for RIVO (The Netherlands) and catching live fish for the Nausicaa center in Boulogne sur mer.
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Location map |
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Positionning system |
Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84
Positioning system : GPS naturel
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