Descripción
Context : The bay of Portman and the adjacent shoreline are exposed to one of the most severe cases of sediments contamination by heavy metals of the whole Mediterranean Sea, due to decades of industrial mining activities which took place in the locality from 1951 to 1991.
This dataset countains fine scale distribution data for echinoderms collected around the bay of Portman (Murcia, Spain) by the Marine biology laboratory (ULB) in October 2013.
The fine scale cartography was realized for both the contamination gradient pattern and the benthic species distribution within the study area. Environmental data are gathered into the Measurement or Facts extension. Most of these data concern heavy metal concentrations (Fe,Cu,Cd,Pb,Zn), for both the total and the finest (particle size <63µm) granulometric fractions of the sediments. Benthic species distribution data are compiled in a DarwinCore archive. The major part of the data are derived from imagery-based identifications on video transects operated with a micro-ROV (VideoRay PRO3 GTO). But it also countains observations made by scuba divers, ad hoc observations, and sampled specimens for the purpose of physiological/ecotoxicological studies.
Registros
Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 15 registros.
también existen 2 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Danis B (2016): Echinoderms occurence in a strongly contaminated Bay (Portman, Spain), using ROV and Scuba-diving surveys. v1.5. Université Libre de Bruxelles (ULB). Dataset/Samplingevent. https://ipt.biodiversity.be/resource?r=ulb-biomar-portman2013&v=1.5
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Université Libre de Bruxelles (ULB). En la medida de lo posible según la ley, el publicador ha renunciado a todos los derechos sobre estos datos y los ha dedicado al Dominio público (CC0 1.0). Los usuarios pueden copiar, modificar, distribuir y utilizar la obra, incluso con fines comerciales, sin restricciones.
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: ec8064cf-81c1-4e99-9c62-b36ac0d0f1a0. Université Libre de Bruxelles (ULB) publica este recurso y está registrado en GBIF como un publicador de datos avalado por Belgian Biodiversity Platform.
Palabras clave
Samplingevent; Portman Bay; Benthic communities; BIOMAR ULB; Marine ecosystems; Ecotoxicology; heavy metals contamination; Remotely Operated Vehicle; Fine scale cartography; Occurrence
Contactos
- Punto De Contacto
- Punto De Contacto
- Investigador Principal
Cobertura geográfica
Portman Bay and adjacent North-Estern shoreline (Approximately 1.4 kilometer section). Only shallows (depth<25 meters) were sampled.
| Coordenadas límite | Latitud Mínima Longitud Mínima [37,58, -0,86], Latitud Máxima Longitud Máxima [37,59, -0,78] |
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Cobertura taxonómica
All marine organisms that could be indentified were recorded. Thus the dataset countains different marine phyla. Nevertheless, the sampling methods and identification efforts prioritized echinoderms (Echinodermata) and the majority of the occurrences belongs to this phylum.
| Reino | Animalia (Animals), Plantae (plants) |
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| Filo | Echinodermata (Echinoderms) |
Cobertura temporal
| Fecha Inicial / Fecha Final | 2013-10-17 / 2013-10-24 |
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Datos del proyecto
The benthic ecosystems of the Portman Bay (Murcia, Spain) and along the adjacent shoreline are exposed to one of the most severe case of sediment contamination by metal of the whole Mediterranean Sea. Although the mining activities that have caused this outstanding contamination have been halted for more than twenty years, the gradient is still strongly marked, reaching extreme levels of contamination in certain points. In october 2013, a team composed of two permanent members of the Marine Biology Laboratory of the Université Libre de Bruxelles (ULB ; Professor Bruno danis as project leader and Philipe Pernet) assisted by three master students carried out a fine scale cartography of both environmental and biological components of the impacted area and the adjacent shoreline. The aim of this campain was to obtain a detailed baseline in order to assess and study the impacts of the sediments contamination on benthic ecosystems, taking the Echinoderms as a model group for the studies.
| Título | Portmàn Bay : Ecological and Toxicological studies about the impacts of highly contaminated sediments on benthic organisms |
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| Fuentes de Financiación | Université Libre de Bruxelles ; Marine Biology lab (http://biomar.ulb.ac.be/). Fonds de la Recherche Scientifique (http://www.fnrs.be) |
| Descripción del área de estudio | Portman'Bay and the adjacent N-E shoreline (for about 1.4 Km long). From 17 to 24 october 2013. |
| Descripción del diseño | The sampling campain was designed in order to assess the influence of the Heavy metals (H.M) contamination level on the echinoderms, considering both physiological and distributional aspects. All the biological aspects studied were related to the contamination gradient through a fine scale cartography of H.M (Fe, Cu, Cd, Pb and Zn) concentration within the sediments. The physiological aspects investigated along the contamination gradient were the intra-coelomic acidity and the symbiotic bacterial communities associated with the digestive tract. Twoo species of sea urchins (Paracentrotus lividus and Arbacia lixula) were used as models for these studies. The distributional patterns were determined for all the echinoderm species encountered within the study area. In a first time, Specimens were collected by dive samling in order to collect the sea urchins needed for the physiological studies, and potentially distinct species that were identified and preserved as references for the video captures analysis. The High definition Video captures were obtained using a micro Remotely operated vehicle (ROV). A standardised procedure was used for each station (Cf. each event) in order to obtain comparable video samples and to optimise the discovery of specimens (more information available into the sampling methods section. A short report of the mission is reachable at : http://biomar.ulb.ac.be/mission-portman-a-short-report/ |
Personas asociadas al proyecto:
- Investigador Principal
- Proveedor De Contenido
- Proveedor De Contenido
- Proveedor De Contenido
- Publicador
Métodos de muestreo
Each sampling station was reached by pneumatic boat (Zodiac MK2 Virage). The first step was to record station relative data ; - WGS84 Coordinates (using a hand GPS Garmin Dakota© 20) - Sea Surface Temperature. In a second time, the following samples were collected by divers ; - 50mL Falcons were filled with sediments, waiting the return to the laboratory for the separation of the finest granulometric fraction (<63µm size) and the H.M content analysis. The metal content analysis methods and results (average of 3 replicates) are detailled in the Measurement Or Facts extension for both the total and the finest fractions. - Water samples for pH and salinity determination. - Specimens : Echinoderms were preserved into ethanol (80%) and stored into the marine biology labs under the collection name 'ULB P'. Each specimen that could belong to a potentially distinct species was collected. The collection was used as a material basis for the identification and as a reference for the imagery based recognition. In another hand, sea urchins (Paracentrotus lividus, Arbacia lixula) and some algae samples were preserved for comparative studies on acid-base physiology and microbial community structures. The last step was the realisation of high resolution video transects, using a micro-ROV (VideoRay pro 3 XE GTO) equipped with an additional HD camera (GOPRO 3 HERO). Straight transects (N,S,E and O) were performed from the georeferenced point to the maximum ROV range (75 meters), respecting a maximum effort of 30 minutes per station.
| Área de Estudio | The sampling campain was conducted from the 17 to the 24 october 2013, and each sampling event was performed between 10 am and 5pm. Only shallow water ecosystems were sampled (<25m depth). Two sets of sampling stations were determined in order to describe the contamination gradient patterns (1) within the bay of Portman and (2) along a section of the adjacent North-East shoreline. 1: 7 Stations were determined within the bay. The initial principle was to operate two parallel transects starting from the shoreline (the presumed source of contamination)and heading seaward. 2. 6 others samling stations were placed alongside the shoreline for about 1.4 km long. Only The North-Eastern coast side, following the main current, has been sampled. For the data publication process, new events have been generated to store the ad Hoc observations made during the sampling campain. |
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| Control de Calidad | Some images extracted from the videos recordings and used as a basis for the observation records have been shared on the following web page : http://biomar.ulb.ac.be/portman-rov-sampling-gallery/ The shared pictures only concern uncertain or incomplete identifications and are open to comments (corrections and new observations). |
Descripción de la metodología paso a paso:
- Each video sample has been carefully viewed. Sure identifications were directly recorded in a spreadsheet, and all uncertain observations were previously extracted to the jpeg format using Avidemux software (V2.6.8). Finally, all data were stored into a spatialised database (MySQL), for their verification and their re-organisation under a Darwin Core schema.
Datos de la colección
| Nombre de la Colección | ULB-P |
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| Métodos de preservación de los ejemplares | Alcohol |
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Metadatos adicionales
| Propósito | This pool of samples and video transects constitutes a unique benchmark to address potential future changes, for example in the mining activities of the Bay of Portman. |
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| Identificadores alternativos | ec8064cf-81c1-4e99-9c62-b36ac0d0f1a0 |
| https://ipt.biodiversity.be/resource?r=ulb-biomar-portman2013 |