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1. Multidisciplinary surveys

Surveys focused to the study of the structure and dynamics of the ecosystems in where different methodologies are combined and where multipurpose sampling stations are carried out.

vizconde de eza
R/V Vizconde de Eza, belonging to SGPM (Secretaría General de Pesca Marítima)


1.1. 2003 ECOMARG survey

1.1.1. Study area: Le Danois Bank (El Cachucho).
1.1.2. Research vessel: Vizconde de Eza (SGPM).
1.1.3. Period: between the 6th and 21st of October of 2003.
1.1.4. Under responsibility of: Dr. Francisco Sánchez (IEO Santander).
1.1.5. Objectives:

  • Morpho-sedimentary characteristics of the Le Danois bank and its adjacent areas.
  • Knowledge of the dynamics and characteristics of the water masses above the bank and its adjacent areas in the autumn.
  • First samplings of the benthic and demersal communities of the bank and its marginal basin in the autumn.
  • Study the trophic ecology of fish and crustaceans inhabiting the area in the autumn.

1.1.6. Main gear used:

  • Simrad EM-300 multibeam echosounder
  • Simrad GN-30 GPSD
  • EA 500 monobeam echosounder
  • SV Plus water sound speed sensor
  • Seabird CTD + Rosette
  • Surface thermosalinographer
  • Doppler Aanderaa RCM9 currentmeter
  • 2 fishing gear baca 39/52 (Porcupine model) for fish sampling
  • 2 beam trawl of 3.5/0.6 for the epibenthos sampling
  • Megabox-corer and Shipek dredges
  • Rocky dredges
  • Suprabenthic sledge of the Arcachon type
  • WP2 Plankton net
  • TFS-1 Photogrammetric sledge


Megabox-corer dredges
Megabox-corer dredges

1.2. 2004 ECOMARG survey

1.2.1. Study area: Le Danois Bank (El Cachucho).
1.2.2. Research vessel: Vizconde de Eza (SGPM).
1.2.3. Period: between the 12th and 30th of April of 2004.
1.2.4. Under responsibility of: Dr. Francisco Sánchez (IEO Santander).
1.2.5. Objectives:

  • Complete the study of the morpho-sedimentary characteristics of the Le Danois bank and the adjacent area, initiated in the 2003 autumn survey.
  • Gain knowledge on the dynamic and characteristics of the water masses above the bank and adjacent areas during the spring.
  • Characterize the benthic and demersal communities of the bank and its marginal basin in the spring.
  • Study the trophic ecology of fish and crustaceans inhabiting the area in spring.

1.2.6. Main gear used:

  • Simrad EM-300 multibeam echosounder
  • Simrad GN-30 GPSD of the O/V
  • SV Plus water sound speed sensor
  • CTD Seabird SBE911
  • Surface thermosalinographer
  • 2 fishing gear baca 39/52 (Porcupine model) for fish sampling
  • 2 beam trawl of 3.5/0.6 for the epibenthos sampling
  • Megabox-corer and Shipek dredges
  • Rocky dredges
  • Suprabenthic sledge of the Arcachon type
  • WP2 Plankton net
  • TFS-1 Photogrammetric sledge
  • ROV Swordfish 600 (Deep Ocean Engineering)


Suprabenthic sledge of the Arcachón type
Suprabenthic sledge of the Arcachón type

1.3. 2008 ECOMARG survey

1.3.1. Study area: Le Danois Bank (El Cachucho).
1.3.2. Research vessel: Cornide de Saavedra (IEO).
1.3.3. Period: between the 7th and 17th of July of 2008.
1.3.4. Under responsibility of: Dr. Francisco Sánchez (IEO Santander).
1.3.5. Objectives:

  • Study of the rocky habitats of break bank.
  • Biodiversity studies.
  • Characterize the benthic and demersal communities of the sedimentary grounds.
  • Study the trophic ecology of fish and crustaceans inhabiting the area in summer.
  • Gain knowledge on the dynamic and characteristics of the water masses above the bank and adjacent areas during the summer.

1.3.6. Main gear used:

  • CTD Seabird SBE25
  • 2 Anderaa RCM8 currentimeters
  • ADCP on board
  • 2 fishing gear GOC-73 for demersal sampling
  • 2 beam trawl of 3.5/0.6 for the epibenthos sampling
  • Megabox-corer and Shipek dredges
  • 2 Rocky dredges
  • Suprabenthic sledge of the Coruña type
  • WP2 Plankton net
  • TFS-2 Photogrammetric sledge


B/O Cornide de Saavedra
Cornide de Saavedra deck during the ECOMARG 08 survey.


1.4. 2009 ECOMARG survey

1.4.1. Study area: Le Danois Bank (El Cachucho), Aviles canyon and The Galicia Bank.
1.4.2. Research vessel: Cornide de Saavedra (IEO).
1.4.3. Period: between the 14th and 30th of July of 2009.
1.4.4. Under responsibility of: Dr. Francisco Sánchez (IEO Santander).
1.4.5. Objectives:

  • Study of the rocky habitats of El Cachucho Bank and Carrandi basin.
  • Characterize the benthic and demersal communities of the sedimentary grounds of El cachucho inner basin.
  • Start the first studies of the benthic and demersal communities of Avilés canyon.
  • Start the first studies of the benthic and demersal communities of Galicia Bank.
  • Study the trophic ecology of fish and crustaceans inhabiting the areas.
  • Study of the dynamic and characteristics of the water masses above the bank and adjacent areas during the summer.
  • Mooring of correntimeters and sediment trap on El Cachucho inner basin.
  • Study of populations of sea mammals.

1.4.6. Main gear used:

  • CTD Seabird SBE25
  • 2 Anderaa RCM8 currentimeters
  • Sediment trap PPS 3/3 de Technicap
  • ADCP on board
  • 2 fishing gear GOC-73 for demersal sampling
  • 2 beam trawl of 3.5/0.6 for the epibenthos sampling
  • Megabox-corer and Shipek dredges
  • 2 Rocky dredges
  • Suprabenthic sledge of the Coruña type
  • WP2 Plankton net
  • TFS-2 Photogrammetric sledge
  • Photolander


team ecomarg 2009
Team of Ecomarg Survey 2009.



1.5. INDEMARES-AVILÉS 0410 Survey

1.5.1. Study area: Avilés canyon.
1.5.2. Buque: Vizconde de Eza (SGM).
1.5.3. Period: between the 19th of April and 13th of May of 2010.
1.5.4. Under responsibility of: Dr. Francisco Sánchez (IEO Santander) and Dr. Santiago Parra (IEO Coruña).


Team of Indemares-Avilés 0410 Survey
Team of Indemares-Avilés 0410 Survey.



1.6. INDEMARES 0710 Survey

1.6.1. Study area: Avilés canyon and Galicia Bank.
1.6.2. Buque: Thalassa (IFREMER/IEO).
1.6.3. Period: between the 16th of July and 28th of August of 2010.
1.6.4. Under responsibility of: Dr. Francisco Sánchez and Dr. Alberto Serrano (IEO Santander).


Team of Indemares 0710 Survey
Team of Indemares 0710 Survey.



2. Surveys aimed at the study of the impact of fisheries on the marine ecosystem


2.1. 2005 TREBOl survey

The research survey TREBOL (study of the impact of the rock-hopper, “TREn de BOLos”, in Spanish) meets the compromise reached by the SGPM and the Principality of Asturias´s government to know the implications of this fishing modality on the bottom ecosystem and its resources, as demanded by the fisheries sector. It was carried out on board of the oceanographic vessel Vizconde de Eza, which belongs to the SGPM (General Marine Fisheries Secretariat) between the 25th of April and the 6th of May, 2005. The main objectives proposed during the TREBOL 2005 survey were:

  • Geomorphological and physiographic study of the hard bottoms of the Asturian shelf
  • Description of the main communities (epifauna and demersal species)
  • Identification of the target species and the discards of this trawling modality
  • Survival of the discarded species
  • Direct effects on fish trophic chains
  • Estimation of the short term direct impact over the ecosystem and its resources

Main gear used:

  • Simrad EM-300 multibeam echosounder
  • Simrad GN-30 GPSD of the oceanographic vessel
  • EA 500 monobeam echosounder
  • SV Plus water sound speed sensor
  • 2 rock-hoppers 42/49 to cause the impact
  • TFS-2 photogrammetric sledge
  • ROV Swordfish 600 (Deep Ocean Engineering)


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(c) 2005. ECOMARG Project