BUSCADOR RECOLECTA

HERMIONE-I Cruise (29GD20110510) carried out on the Research Vessel García del Cid in 2011, Hotspot Ecosystem Research and Man's Impact on European seas. Contemporary sediment transport processes were measured by an instrumented mooring line equipped with a downward-looking 300 kHz acoustic Doppler current profiler (ADCP) from Teledyne RDI and three turbidimeters (AQUA logger 520 from the Aquatec Group) deployed from 10 May to 22 September 2011 on the northern flank of La Fonera Canyon, at 980 m depth within the Montgrí tributary valley axis. Seafloor sediment samples from the canyon flanks were collected using a six-tube multicorer from KC-Denmark during the HERMIONE-1 cruise onboard the RV García del Cid

COSTEM-4 Cruise (29GD20110605) carried out on the Research Vessel García del Cid in 2011, The COSTEM project studies the processes that control sedimentary dynamics in the external platform, in the area of ​​the headwaters of the submarine canyons and the upper slope of the continental margin of the Ebro and the Gulf of Valencia. The main objective of the study is to expand the knowledge of the current mechanisms of sediment transport from the platform to the slope, and determine what role the energy episodes exert in this system, such as strong storms or the presence of internal waves

HERMIONE-II Cruise (29GD20111009) carried out on the Research Vessel García del Cid in 2011, Hotspot Ecosystem Research and Man's Impact on European seas

COSTEM-5 Cruise (29GD20111020) carried out on the Research Vessel García del Cid in 2011, The COSTEM project studies the current processes that control the sedimentary dynamics on the external platform, the headwaters of submarine canyons and the upper slope of the continental margin of the Ebro and the Gulf of Valencia. The main objective of the study is to expand the knowledge of the current mechanisms of sediment transport from the platform to the slope, and determine the role played by this system in energy episodes such as heavy storms or the presence of internal waves

ABIDES-2 Cruise (29GD20170603) carried out on the Research Vessel García del Cid in 2017, To study the transport processes from the submarine canyon flanks of the Catalan margin to deeper areas caused by the bottom trawling activities and evaluate the impact on the sedimentary substrate.To address several of the specific objectives proposed in this project objectives it will be necessary to carry out three separate oceanographic campaigns six months each other to record time series of oceanographic parameters through the anchorage of several anchors equipped with current meters, turbidimeters and sediment traps located inside submarine canyons . In the first of these campaigns, we will proceed to anchoring the anchors, in the second to the maintenance and in the third to the final recovery of the instruments, to cover an annual cycle of record the sediment transport processes and identify the contribution of the resuspension by trawling to sedimentary flows . In each one of these campaigns will be transects of CTD stations to study the seasonal variability of hydrography and formation of nephelloid layers in the column of water and surface sediment cores will be obtained . Sampling will be done both in open slope environments and in the interior of canyons submarines. The oceanographic vessel chosen for these three campaigns is the B / O García del Cid, which has the right characteristics to carry out the tasks planned and the crew is experienced with anchoring maneuvers and recovery of oceanographic anchors.

ABIDES-3 Cruise (29GD20171003) carried out on the Research Vessel García del Cid in 2017, It aims to study the current sedimentary processes associated with the activity of trawling, which although it has been investigated in coastal environments, very little is known of those occurring in the continental slope, where the benthic ecosystem is more vulnerable to having reduced capacity for recovery The stress that trawling generates on the seabed is dramatic in areas where fishing activity is intense, continuous and wide geographically, as in the continental strip of the northwestern Mediterranean (coast and slope adjacent to the provinces of Barcelona and Girona). Thus, the main objective of this project is to improve the knowledge of the current mechanisms of erosion, transport and sediment accumulation caused by this form of fishing in the continental slope, with the purpose of identifying the impacts caused on the seabed and get to promote corrective measures to guarantee a sustainable fishery. To do this, time series of currents and sediment concentration in suspension will be recorded by anchoring instrumented anchors in the vicinity of fishing grounds. At the same time, hydrographic profiles will be periodically carried out for the identification of nephelide layers in the water column and surface sediments will be obtained during oceanographic campaigns. Sampling will be carried out both in open slope environments and in the interior of submarine canyons, following a strategy based on the footprint of the fishing effort during the last 10 years. Likewise, a detailed study of the habitats and underwater morphology will be carried out in order to evaluate the status (or level of integrity) of the seabed. The study area will focus on the continental margin of the northwestern Mediterranean, where trawling has been practiced for several decades and where the distribution of fishing effort is known in detail. The specific objectives that are intended to be achieved are 1) monitor sediment transport processes inside submarine canyons and identify the contribution of resuspension by trawling to sedimentary flows; 2) identify the hydrographic structure and the temporal evolution of the distribution of nephelide layers in the water column as indicators of resuspension processes by trawling; 3) evaluate the erosion caused by trawling in the surface sediments of the continental slope and establish sedimentary patterns based on the presence or absence of fishing grounds; 4) determine the sedimentation rhythms inside submarine canyons and evaluate the potential formation of preferential zones of anthropic sedimentary accumulation; 5) quantify the role of trawling in the alteration of organic carbon content in the sedimentary record; 6) to determine, through direct visual observations, small-scale morphological changes and alterations in the habitat and deep benthic ecosystems produced by trawling; and 7) identify large-scale morphological changes in areas of fishing grounds in the study area by performing detailed bathymetries, as well as in other areas of intensive trawling of the Spanish margin from the use of existing bathymetric information

ABIDES-4 Cruise (29GD20180302) carried out on the Research Vessel García del Cid in 2018, Objective: Study the transport processes from the flanks of the submarines canyons of the Catalan margin towards deeper areas caused by the trawling activities and assess the impact on the sedimentary substrate. Tasks: Recovery and anchoring of oceanographic anchors, sampling with multi-core, CTD profiling and acquisition of multibeam bathymetry

Oceanographic data acquired during the ABRIC-4 Cruise (29GD20230310) on board the Research Vessel García del Cid in 2023, Assessment of Bottom‐trawling Resuspension Impacts in deep benthic Communities (ABRIC)

Oceanographic data acquired during the ARCO Cruise (29GD20230626) on board the Research Vessel García del Cid in 2023., Assessment of fishing grounds Restoration after a Change of bottom trawling Otter boards (ARCO). The main objective of the ARCO project is to study the current sedimentary processes related with trawling activity in the Palamós submarine canyon after the change of trawl doors by the Palamós harbor fleet. The impacts of this type of fishing in deep-sea environments are considered very high due to their intensity and recurrence, and to the fact that sediment dynamics are less energetic and the benthonic ecosystems are more vulnerable and have less resilience than in neritic or shelf environments