Catálogo de datos del IEO
Keyword
Habitat characterisation
136 record(s)
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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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Swath bathymetry, high definition seismic reflection and habitat mapping of the insular shelf of Menorca.
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Bathymetry and seismic work on the coast of the island of Menorca (Baleares Islands)
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Study of different sectors of the Mediterranean margins of Andalusia to analyze the potential existing active tectonic structures, capable of generating geological risks either due to the generation of earthquakes, or secondarily due to the triggering of landslides and / or tsunamis.
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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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The objective of the INTEMARES A4 Canarias 1118 cruise is the evaluation by direct methods of the effect of the fishing pressure exerted fundamentally by fixed bottom gear on the distribution and quality of the benthic habitats RN2000. In addition, it will be analyzed: • Effect of fishing on benthic communities and habitats. • Evaluation of the relationship between the lost arts (phantom fishing) and the different levels of effort.5 • In case temporary trends are identified in the effort, and if the priority objectives have been covered, the relationship between temporal trends in effort and the quality of habitats.
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Direct visual observation survey in order to improve the knowledge of marine bottoms in the Menorca Channel and Emile Baudot seamount. For that, the specific objectives are: 1. Improvement of the scientific knowledge for the physical, environmental and biological characterization of areas known to present high diversity of juveniles of European spiny lobster in the Menorca channel and 2. Start the biological characterization of benthic habitats in circalitoral and batyal bottoms in the Emile Baudot seamount.
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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.