Echinoderms occurence in a strongly contaminated Bay (Portman, Spain), using ROV and Scuba-diving surveys
Dernière version Publié par Université Libre de Bruxelles (ULB) le 19 mars 2019 Université Libre de Bruxelles (ULB)

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.

Accueil GBIF DwC-A Fichier EML RTF Versions Droits Citer ceci
Enregistrements de données

Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 15 enregistrements.

2 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.

  • Event (noyau)
  • MeasurementOrFact 
  • Occurrence 

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées des ressources sont disponibles au téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.


Téléchargez la dernière version de la ressource en tant qu'Archive Darwin Core (DwC-A), ou les métadonnées de la ressource au format EML ou RTF :

Données sous forme de fichier DwC-A (zip) télécharger 15 enregistrements dans Anglais (13 kB) - Fréquence de mise à jour: non planifié
Métadonnées sous forme de fichier EML télécharger dans Anglais (17 kB)
Métadonnées sous forme de fichier RTF télécharger dans Anglais (15 kB)

Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

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.


Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est Université Libre de Bruxelles (ULB). To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : ec8064cf-81c1-4e99-9c62-b36ac0d0f1a0.  Université Libre de Bruxelles (ULB) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Belgian Biodiversity Platform.


Samplingevent; Portman Bay; Benthic communities; BIOMAR ULB; Marine ecosystems; Ecotoxicology; heavy metals contamination; Remotely Operated Vehicle; Fine scale cartography; Occurrence


Personne ayant créé cette ressource:

Bruno Danis
Université Libre de Bruxelles

Personne pouvant répondre aux questions sur la ressource:

Maxime Coupremanne
Data liaison officer
Belgian Biodiversity Platform
22 Avenue de la faculté
5030 Gembloux
Bruno Danis
Université libre de Bruxelles

Personne ayant renseigné les métadonnées:

Maxime Coupremanne
Data Liaison officer
Belgian Biodiversity Platform
22 Avenue de la faculté
5030 Gembloux

Autres personnes associées à la ressource:

Chercheur Principal
Danis Bruno
Université Libre de Bruxelles
Couverture géographique

Portman Bay and adjacent North-Estern shoreline (Approximately 1.4 kilometer section). Only shallows (depth&lt;25 meters) were sampled.

Enveloppe géographique Sud Ouest [37,58, -0,86], Nord Est [37,59, -0,78]
Couverture taxonomique

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.

Kingdom  Animalia (Animals),  Plantae (plants)
Phylum  Echinodermata (Echinoderms)
Couverture temporelle
Date de début / Date de fin 2013-10-17 / 2013-10-24
Données sur le projet

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.

Titre Portmàn Bay : Ecological and Toxicological studies about the impacts of highly contaminated sediments on benthic organisms
Financement Université Libre de Bruxelles ; Marine Biology lab ( Fonds de la Recherche Scientifique (
Description du domaine d'étude / de recherche Portman'Bay and the adjacent N-E shoreline (for about 1.4 Km long). From 17 to 24 october 2013.
Description du design 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 :

Les personnes impliquées dans le projet:

Chercheur Principal
Bruno Danis
Fournisseur de Contenu
Philippe Pernet
Fournisseur de Contenu
Valérie Rossez
Fournisseur de Contenu
Andrea Garvetto
Coupremanne Maxime
Méthodes d'échantillonnage

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 (&lt;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.

Etendue de l'étude 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 (&lt;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.
Contrôle qualité Some images extracted from the videos recordings and used as a basis for the observation records have been shared on the following web page : The shared pictures only concern uncertain or incomplete identifications and are open to comments (corrections and new observations).

Description des étapes de la méthode:

  1. 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.
Données de collection
Nom de la collection ULB-P
Méthode de conservation des spécimens Alcohol
Métadonnées additionnelles
Objet 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.
Identifiants alternatifs ec8064cf-81c1-4e99-9c62-b36ac0d0f1a0