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benthos samplers

69 record(s)

 

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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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    Mantenimiento de los colectoresprofundos de langosta, obtención de larvas filosomas y muestreo con dragas en maerl.

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    COL_MAERL.El objetivo del proyecto es evaluar el impacto acumulado de la pesca sobre los fondos de maërl comparando fondos impactados fuera de la reserva marina de las Islas Columbretes con fondos protegidos, durante más de dos décadas, dentro de la reserva. Este conocimiento informará del desarrollo de métodos de pesca que promuevan actividades sostenibles en el área de estudio. Por lo tanto, en esta campaña los objetivos principales son: 1)Obtener información sobre la distribución de los fondos de maërl en la zona de estudio, mediante observaciones puntuales con cámara sumergible (IPSE). 2)Comparar la composición de las especies indicadoras y estructurales de los fondos de maërl/rodolitos en cuanto a la composición de especies, morfotipos y tamaños. Para ello se realizarán muestreos del bentos mediante dragas. 3)Obtener índices de abundancia y demografía de langosta mediante vídeo cebado. Las tomas de video se llevaran a cabo en zonas con distintos niveles de protección, tanto en el interior de la reserva como en el entorno más cercano. 4) Analizar en detalle las muestras obtenidas con las dragas, con el fin de detectar cambios en la estructura de las comunidades algales y faunales de los fondos de maërl/rodolitos, comparando localidades en un gradiente de presión pesquera.

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    1.Prospeción baatimétrica y geofísica utilizando técnicas de ecosonda multihaz y sísmica de muy alta resolución paara llevar a cabo un estudio morfológico y estratigráfico detallado de la zona de estudio. 2.Muestreos de sedimento mediante draga box-corer para conocer las características texturales del sedimento y el bentos en estos fondos marinos. 3.Se efectúan pruebas de un sensor de sedimentos (LISST-ABS) acoplado al CTD SB25.

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    Development of underwater photogrammetry system for Marine Renewable Energy

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    1-Evaluación del estado de las poblaciones de peces y cefalópos en el infralitoral rocoso (Subprograma PC1, Encomienda EEMM) 2-Evaluación del estado de las comunidades bentónicas en el infralitoral rocoso (Subprograma HB1, Encomienda EEMM) 3-Evaluación del estado de las especies protegidas bentónicas en el infralitoral rocoso (Subprograma HB6, Encomienda EEMM)

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    The main objective foreseen in the ECOMARG 2021 campaign, to be carried out on board the R/V Ángeles Alvariño (IEO), is the study of the spatial distribution, structure and dynamics of vulnerable habitats of the ZEC “El Cachucho” (Le Danois Bank and its internal basin) and the head of the nearby Lastres canyon. Specific objectives: • Estimation of the abundance and spatial distribution of the epibenthic communities that characterize the vulnerable habitats present in the area, with special priority for the classified as 1170 Reefs in the DH. • Monitoring of the conservation status of vulnerable habitats and their communities biological, using fixed sampling stations, through indicators of the Red Natura 2000, in accordance with article 17 of the Habitats Directive, applying technical photogrammetric. • Geophysical study of the Lastres and Llanes canyons by obtaining cartography high resolution. • Characterization of the oceanographic dynamics of the BBL (Benthic Boundary Layer - layer near the bottom) in the Gaviera Canyon and in the fixed sampling stations from El Cachucho to know the environmental characteristics of the habitats 1170. • Study of the mobile species (mainly fish, crustaceans, and mollusks) of the Vulnerable habitats present at fixed sampling stations using platforms multiparametric (landers).

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    Identification and mapping of habitats. Characterization of benthic communities through the acquisition of underwater images, bathymetric data of the bottom and of the surface structure, and sampling with rock dredge, van veen and shipek. Identificación y cartografía de hábitats. Caracterización de comunidades bentónicas mediante la adquisición de imágenes submarinas, datos batimétricos de la superficie del fondo y de la estructura superficial, y muestreos con draga de roca, van veen y shipek.

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    The overall purpose in the planned INDEMARES-AVILÉS 0912 survey is the study of the structure and dynamics of complex deep canyons ecosystems systems of Avilés. In this sense include activities to: - Geomorphological study of the continental shelf area next to header Avilés Canyon. Includes multibeam mapping and sediment samples. - Estimation of the spatial distribution of hard bottom habitats and their environmental characteristics. - Estimating the abundance and spatial distribution of rocky epibenthic communities and cold water coral reefs. - Dynamics and characteristics of water bodies in the axes of the cannyon.

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    The campaign targets under INFUECO 1112, to carry on board the research vessel Angeles Alvariño, are the identification and mapping of habitats and characterization of biogenic benthic and demersal species. Specific objectives focus on the investigation of benthic Banks areas of 'Amanay' and 'El Banquete' by direct and visual methods. Specifically: · Extensive visual videogrammetry HD with sled towed "APHIA 2012". · Study epibenthic fauna through the use of beam trawl, to capture sessile and reduced mobility fauna in shallow soft bottoms and rock, and rock dredge for qualitative sampling of wildlife sessile hard bottom fauna. · Recognition with multibeam bathymetric and TOPAS parametric probe.