Catálogo de datos del IEO
Keyword
beam trawls
51 record(s)
Type of resources
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Topics
INSPIRE themes
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Contact for the resource
Provided by
Years
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Status
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Development of underwater photogrammetry system for Marine Renewable Energy
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Get abundance indices of groundfish demersales species. Get the size structure of commercially exploited stocks. Collection of biological material. Prospecting deep zones.Get physical-chemical parameters of water in the study area.
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Get abundance indices of groundfish demersales species. Get the size structure of commercially exploited stocks. Collection of biological material. Prospecting deep zones.Get physical-chemical parameters of water in the study area.
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1. To obtain estimates of Nephrops burrows densities in the Gulf of Cádiz from a randomized isometric grid of UWTV stations spacing 4 nautical miles using the underwater images. 2. To define the Nephrops distribution in the Gulf of Cádiz 3. To obtain density estimates of bentho-demersal macrofauna species 4. To calibrate bentho-demersal macrofauna observed in the underwater videos and those obtained in the beam trawl. 5. To obtain and the occurrence of trawl marks on the sea bed 6. To measure oceanographic variables using a sledge mounted CTD 7. To collect sediment samples 8. To prospect circalittoral and bathyal areas without trawling activity 9. Sea bed morphological and backscatter analyses
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- To obtain estimates of Nephrops densities through underwater videos with photogrammetric sled. - To obtain estimates of Nephrops burrows dendity. - To delimit the distribution of Nephrops in the Gulf of Cádiz. - To obtain estimates of bento-demersal macrofauna density present in the Nephrops fishing ground. - To calibrate bentho-demersal macrofauna observed in the underwater videos and those obtained in the beam trawl. - To prospect non-draggable areas of the circalitoral and batial to know the state of the bottom and the presence of commercial resources. - To gather complementary information on the action of the trawl gear in the seabed. - Oceanographic data collection. - Morphological analysis and acoustic response of the substrate through data acquisition bathymetry and reflectivity, as well as very high resolution seismic profiles of areas already prospected or pending to prospect. - To collect of sediment samples for sedimentological and community characterization of endofauna. - To explore the Portuguese continental margin of the Gulf of Cádiz near the Spanish border in relation to the continuity of the distribution of Nephrops and characterization seabed.
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1. To obtain estimates of Nephrops burrows densities in the Gulf of Cádiz from a randomized isometric grid of UWTV stations spacing 4 nautical miles using the underwater images. 2. To define the Nephrops distribution in the Gulf of Cádiz 3. To obtain density estimates of bentho-demersal macrofauna species and the occurrence of trawl marks on the sea bed 4. To calibrate bentho-demersal macrofauna observed in the underwater videos and those obtained in the beam trawl. 5. To measure oceanographic variables using a sledge mounted CTD 6. To prospect circalittoral and bathyal areas without trawling activity
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Mantenimiento de los colectoresprofundos de langosta, obtención de larvas filosomas y muestreo con dragas en maerl.
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Habitat mapping and geomorphological description of Menorca Island East shelf.
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Study of the circalitoral benthic habitats in sedimentary bottoms of the South Atlantic Demarcation. Identification and mapping of habitats. Characterization of benthic communities.
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Get more information regarding the characteristics and distribution of benthic habitats present inside the Columbretes Islands Marine Reserve with the objective of Develop a bionomic map that covers the total extent. The complementary objective is the realization of the benthic cartography. It is intended to achieve location and subsequent georeferencing of the upwelling of gases present in the environment of the volcanic archipelago that forms The study area of this campaign. Associated with this objective is intended to know the Bacterial community in the area of gaseous upwellings and a physicochemical characterization of these areas.