Catálogo de datos del IEO
Keyword
Fauna abundance per unit area of the bed
105 record(s)
Type of resources
Categories
Topics
INSPIRE themes
Keywords
Contact for the resource
Provided by
Years
Formats
Status
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Mantenimiento de los colectoresprofundos de langosta, obtención de larvas filosomas y filmaciones submarinas con video cebado.
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Mantenimiento de los colectoresprofundos de langosta, obtención de larvas filosomas y filmaciones submarinas con video cebado.
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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 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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1. To test the sledge TST- HORUS and the methodology based on the identification and quantification of Nephrops burrows in order to estimate the Nephrops abundance using underwater images. 2. To obtain estimates of Nephrops borrows density 3. To obtain estimates of macro benthos density 4. To collect ancillary information on the occurence of trawl marks on sea bed 5. To collect sediment samples 6. To collect biological data on infauna 7. To obtain oceanographic data using a sledge mounted CTD
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OBJECTIVES: - Acquisition of underwater videos with TRISION photogrammetric sled. - Obtain density estimates of Norway lobster burrows from underwater images. - Obtain density estimates of species of the megafauna and benthic and demersal macrofauna present in the Norway lobster fishing grounds from underwater images. - Gather complementary information on the action of trawling gear on the bottom and garbage. - Oceanographic data collection. - Taking sediment samples.
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The objective of the CIRCAROCK0521 survey is to obtain the necessary information that will allow “identifying and evaluating the environmental status of circalittoral and rocky bathyal habitats”. The specific objectives that are proposed are: 1. Identify structuring species that characterize rocky circalittoral habitats. 2. Know the distribution of rocky circalittoral habitats. 3. Identify environmental variables involved in the distribution of rocky circalittoral habitats. 3. Compile information that is necessary to calculate the status and condition indicators that allow evaluating the conservation status of the different rocky circalittoral habitats. Additionally, the survey will allow documenting the rocky bottoms of the Cantabrian Sea and the Galician Atlantic coast in order to achieve the following secondary objectives: - Studies with multibeam probe and topas for mapping the rocky bottoms and characterization of the geomorphology of the area. - Document recording video and photo the species that characterize the different rocky circalittoral habitats. - Identify typical species of rocky circalittoral habitats from samples obtained with the rock dredge. - Prepare a catalog of species in which the taxonomy, the visual aspect and different biological and ecological characteristics of the different species are related.
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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. Calibration between the "B/O Michael Oliver" and the "B/O Cornide Saavedra" Demersal campaign Gulf of Cadiz
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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.