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Species and habitats - Raja clavata - All ages - Recurrence - IBTS Q1 (1980-2010)
Species habitat occupation, observed during the first quarter IBTS from 1980 to 2010, has been expressed as rare, occasional, frequent, recurrent depending on density levels and variability over time.
Simple
- Autres appellations ou acronymes
- IBTS_species_geostatA
- Date ( Publication )
- 2012-03-01T00:00:00
- Identificateur
- CHARM_RAJACLArec_IBTS_1980-2010
- Forme de la présentation
- Carte numérique
- Autres informations de référence
- Source CHARM Consortium
- Reconnaissance
- IFREMER
- Reconnaissance
- CHARM consortium
- Etat
- Finalisé
- Fréquence de mise à jour
- Lorsque nécessaire
- Thèmes Sextant ( Thème )
-
- /Biological Environment/Species/Fish Species of Commercial Interest
- Mots clés ( Discipline )
-
- Species data set
- CHARM
- Raie bouclée
- Thornback ray
- GEMET - INSPIRE themes, version 1.0 ( Thème )
-
- Répartition des espèces
- external.theme.gemet ( Thème )
-
- ressource halieutique
- Limitation d'utilisation
- research-only
- Contraintes d'accès
- Licence
- Autres contraintes
- Has to be cited this way in maps : "Source CHARM Consortium"
- Autres contraintes
- Has to be cited this way in bibliography : "Carpentier A, Martin CS, Vaz S (Eds.), 2009. Channel Habitat Atlas for marine Resource Management, final report / Atlas des habitats des ressources marines de la Manche orientale, rapport final (CHARM phase II). INTERREG 3a Programme, IFREMER, Boulogne-sur-mer, France. 626 pp. & CD-rom"
- Type de représentation spatiale
- Raster
- Dénominateur de l'échelle
- 2500
- Langue
- fr
- Langue
- en
- Jeu de caractères
- Utf8
- Catégorie ISO
-
- Océans
- Biote
- Environnement
- Description de l'environnement de travail
- Microsoft Windows XP ; ESRI ArcGIS 9.x
- Identifiant géographique
- Southern North Sea
N
S
E
W
))
- Date de début
- 1989-01-01
- Date de fin
- 2007-12-31
- Nom du système de référence
- WGS 84 (EPSG:4326)
- Dimensions
- 2
- Noms des axes
- Axe - X
- Nombre de pixel
- 768
- Résolution
- 0.009 degree
- Noms des axes
- Axe - Y
- Nombre de pixel
- 660
- Résolution
- 0.009 degree
- Type de raster
- Surface
- Disponibilité des paramètres de transformation
- Non
Distributeur
- Ressource en ligne
- IBTSQ1_rajacla_rec ( OGC:WMS )
- Protocole
- COPYFILE
- Nom
- IBTSQ1_rajacla_rec
- Niveau
- Jeu de données
- Généralités sur la provenance
- The survey extends in the North Sea, which corresponds to ICES divisions IVb and IVc. The study area is divided into rectangles of 0.5d latitude and 1d longitude using a systematic sampling strategy. The sampling gear is a high opening bottom trawl well adapted for catching demersal species, with a 10 mm mesh size (side knot) for catching juveniles. This sampling gear is polyvalent and is well adapted to the varying seabed types encountered in the study area.Two 30 minutes hauls are performed within each rectangle of the ICES grid. The fishing hauls are chosen using professional fishing plans or found by prospecting. The fishing method is standardised: sampling stations have been each year at similar locations and identical sampling gear is used. At each sampling station, all the fish species are sorted, weighed, counted and measured. For certain commercial species, bony structures (otoliths) are collected.
- Description
- For each species, kriged annual maps were centered, standardised and rescaled to range between 0-1. Mean and SD maps were then computed over all the available period and classified in two classes based on their median values. These were combined to create recurrence map with 4 classes: rare (low mean and low SD), occasional (low mean and high SD), frequent (high mean, high SD), recurrent (high mean and low SD).
- Description
- IBTS, annual scientific survey of IFREMER
- Identifiant de la fiche
- c635a8f3-d09f-49cd-bf4b-5841e0602abb XML
- Langue
- en
- Jeu de caractères
- Utf8
- Type de ressource
- Jeu de données
- Date des métadonnées
- 2020-06-03T23:27:32
- Nom du standard de métadonnées
- ISO 19115:2003/19139 - SEXTANT
- Version du standard de métadonnées
- 1.0
Aperçus
Étendue spatiale
N
S
E
W
Fourni par
Ressources associées
Not available