PELACUS 0411

Name: PELACUS 0411
Start: 2011-03-26
End: 2011-04-22
Location: Bay of Biscay

Type	Oceanographic cruise
Set	This cruise is part of the set PELACUS
Ship	Thalassa
Ship owner	Ifremer
Dates	26/03/2011 - 22/04/2011
Chief scientist(s)	RIVEIRO Isabel , SANTOS Begona
	INSTITUTO ESPANOL DE OCEANOGRAFIA (VIGO) Centro Oceanografico de Vigo Subida a Radiofaro, 50 36390 VIGO +34 986 492 111 ieo.vigo@vi.ieo.es http://www.vi.ieo.es/
DOI	10.17600/11003026
Objective	1. Estimation of pelagic fish abundance in coastal waters of southern Europe using echo integration. 2. Mapping of the area of distribution. 3. CUFES continuous underway recording to estimate egg abundance. 4. Pairovet used to calibrate CUFES recordings and conventional station measurements. 5. Estimation of size-fractioned plankton biomass (CHN method). 6. Studying oceanographic and meteorological conditions and how they are related to distribution and abundance of adult pelagic fish and eggs. 7. Hydrology: Characterization the thermohaline properties of continental shelf waters. Measuring vertical profiles of temperature, salinity and fluorescence at stations surface data acquisition (thermosalinometry, fluorescence and meteorology). 8. Plankton: Determining taxonomic diversity and biomass distribution patterns in different size classes of plankton (phytoplankton and zooplankton) in the study area. 9. Mapping the abundance of predators.

Sea/Ocean

Bay of Biscay

(Calicia + Cantabrico)

Ports

Port of departure : Vigo (Spain)

Port of return : Santander (Spain)

Scientific Authority

INSTITUTO ESPANOL DE OCEANOGRAFIA (VIGO)

Centro Oceanografico de Vigo

Subida a Radiofaro, 50

36390 VIGO

+34 986 492 111

ieo.vigo@vi.ieo.es

http://www.vi.ieo.es/

Participating bodie(s)

IEO, IFREMER

Discipline(s)

PHYSICAL OCEANOGRAPHY
BIOLOGICAL OCEANOGRAPHY
FISHERIES

Code	Label	Quantity	PI
B01	Primary productivity Phytoplankton incubation samples (& A.Bode)	66 stations	NOGUEIRA Enrique
B06	Dissolved organic matter (inc DOC)	70	RIVEIRO Isabel
B07	Pelagic bacteria/micro-organisms Samples with bottles ; to be analysed on lab (& A. Bode)	370 samples	NOGUEIRA Enrique
B08	Phytoplankton Samples with vertical tows ; to be analysed on lab (& A. Bode)	-	NOGUEIRA Enrique
B09	Zooplankton Samples with vertical tows ; to be analysed on lab (& A. Bode)	-	NOGUEIRA Enrique
B13	Eggs & larvae Obtained by CUFES (A. Lago de Lanzos)	312	RIVEIRO Isabel
B14	Pelagic fish Fishing hauls with pelagic trawl (E. Lopez)	62 hauls	RIVEIRO Isabel
B71	Particulate organic matter (inc POC Samples with bottles ; to be analysed on lab (&A. Bode)	-	NOGUEIRA Enrique
B72	Biochemical meas. (eg,lipids,amino Samples with bottles ; to be analysed on lab (& A. Bode)	-	NOGUEIRA Enrique
G73	Single-beam echosounding Echosounder 38 & 120 kHz frequencies used; gain set at -60db (1000nm)	-	MIQUEL Juan Carlos
H09	Water bottle stations	370 samples	RIVEIRO Isabel
H10	CTD stations	125 stations	RIVEIRO Isabel
H11	Subsurface meas. underway (T,S) Continuous using Thalassa facilities	-	RIVEIRO Isabel
H21	Oxygen Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H22	Phosphate Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H23	Total - P Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H24	Nitrate Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H25	Nitrite Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H26	Silicate Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H27	Alkalinity Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H28	pH Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H30	Trace elements Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H74	Carbon dioxide Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H76	Ammonia Samples with bottles ; to be analysed on lab (& A.Bode)	370 stations	NOGUEIRA Enrique
H90	Other chemical oceanographic meas. Samples with bottles ; to be analysed on lab (& A.Bode)	370 samples	NOGUEIRA Enrique

Summary of measurements

-Acoustics. Acoustic sampling was done in daytime over a sampling grid with legs 8 miles apart. A total of 59 transects were covered (851 nautical miles of acoustic sampling).
-Trawls. Two pelagic trawls were used. A total of 51 hauls were made.
-Hydrology and plankton. The stations will be placed along the acoustic transects and the distance between them will most likely be 3 nautical miles, normally this should be done at night-time on profiles coinciding with the acoustic ones.
-100 vertical profiles of salinity, temperature and fluorescence along 25 transects were performed in all.
-Continuous underway recording of eggs. A pump was used to take water at 3m depth.
Using this pump, horizontal distribution of eggs was obtained by the CUFES (Continuous Underway Fish Egg Sampler). A total of 291 samples were obtained.
- Mapping the abundance of predators: Observations were made during acoustic sampling legs (with two observers during the first part and only one during the second).

Location map

Positionning system

Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84

Positioning system : GPS différentiel

Bibliography

Publications

Masse Jacques, Uriarte A, Angelico Mm, Carrera P (2018). Pelagic survey series for sardine and anchovy in ICES subareas 8 and 9 — Towards an ecosystem approach. ICES cooperative research report, (332), 268p. Publisher's official version : https://doi.org/10.17895/ices.pub.4599 , Open Access version : https://archimer.ifremer.fr/doc/00585/69728/

Santos M. Begoña, Gonzalez-Quiros R., Riveiro I., Iglesias M., Louzao M., Pierce G. J. (2013). Characterization of the pelagic fish community of the north-western and northern Spanish shelf waters. Journal Of Fish Biology, 83(4), 716-738. https://doi.org/10.1111/jfb.12107

File	Processing level	Size	Format
Restricted access 201100302645-sb_depth-TS_EK500.depth	RAW DATA	4 MB	NetCDF TECHSAS
Restricted access 201100302645-sb_depth-TS_EK6018.depth	RAW DATA	37 MB	NetCDF TECHSAS
Restricted access 201100302645-sb_depth-TS_EK6038.depth	RAW DATA	37 MB	NetCDF TECHSAS
Restricted access 201100302645-sb_depth-TS_EK6070.depth	RAW DATA	37 MB	NetCDF TECHSAS
Restricted access 201100302645-sb_depth-TS_EK60120.depth	RAW DATA	37 MB	NetCDF TECHSAS
Restricted access 201100302645-sb_depth-TS_EK60200.depth	RAW DATA	37 MB	NetCDF TECHSAS

French Oceanographic Cruises

PELACUS 0411

Data managed by SISMER

Bibliography