Mon GéoSource
Species and habitats - Trisopterus luscus - Nurseries French Coasts - Multi-annual abundance in September
Abundance of several species in coastal nurseries along french coasts.
Simple
- Autres appellations ou acronymes
- FYFS_species_geostatP
- Date ( Publication )
- 2009-12-31T00:00:00
- Identificateur
- CHARM_TRISLUS_NURS_FYFS_R
- 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
- 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
- 25000
- Langue
- en
- Langue
- fr
- Jeu de caractères
- Utf8
- Catégorie ISO
-
- Océans
- Biote
- Environnement
- Description de l'environnement de travail
- Microsoft Windows XP ; ESRI ArcGIS 9.x
- Identifiant géographique
- Eastern English Channel
N
S
E
W
))
- Date de début
- 1977-01-01
- Date de fin
- 2006-12-31
- Nom du système de référence
- WGS 84 (EPSG:4326)
- Dimensions
- 2
- Noms des axes
- Axe - X
- Nombre de pixel
- 426
- Résolution
- 0.009 degree
- Noms des axes
- Axe - Y
- Nombre de pixel
- 209
- Résolution
- 0.009 degree
- Type de raster
- Surface
- Disponibilité des paramètres de transformation
- Non
Distributeur
- Ressource en ligne
- CHARM_TRISLUS_NURS_FYFS_R ( OGC:WMS )
- Ressource en ligne
-
CHARM web site
(
WWW:LINK
)
CHARM web site
- Protocole
- COPYFILE
- Nom
- FYFS_TRISLUS_pluri
- Niveau
- Jeu de données
- Généralités sur la provenance
- Between 1977 and 2006, in September, IFREMER conducted French Young Fish Surveys alond the French coasts. This dataset comprises data from four surveys covering different periods (Bay of Veys, 1977-1981; Bay of Seine, 1995-2002; Bay of Somme, 1998-2006; DYFS, 1977-1983). The French YFs taking place in the Bays of Somme and Seine uses a 3 m beam trawl outside of the bays, but a 2 m beam trawl witin the bays. Data have sometimes been standardised to take into account the difference in gear characteristics.
- Description
- Due to data scarcity, it was not possible to produce annual maps of species abundance. These had to be averaged based on their position over all the available period. The resulting averaged dataset was mapped by kriging.Statistical analysis : the statistical distribution of biological data were tested for normality (histograms, skewness, kurtosis). The data were transformed whem skewness value exceeded |1| and/or kurtosis exceeded 1 and if a normalising function that could improve the data distribution was found. Biological variables were measured on scales based on analytical conventions that are unrelated to the natural processes generated them. Therefore, any transformed scale is as appropriate as those on which these data were originally recorded. Geostatistical interpolation : the spatial variation of biological data were analysed using GENSTAT (GENSTAT 7 Committee, 2004), which is a GENeral STATistics package including the main geostatistical tools. It computes experimental variograms, fits these with various authorised mathematical models and uses them to calculate kriged estimates on a fine regular grid (of latitudes and longitudes). The grid of points was imported into ArcMap and interpolated with the Spatial Analyst extension in order to create a continuous raster of 1 km² resolution. The resulting maps illustrate the spatial distributions and the variations over time for biological data studied in CHARM's area. For legends of maps, approximates od the 5th and the 95th quantiles were used for the minimales and maximales values respectively.
- Description
- FYFS surveys, scientific surveys from IFREMER
- Identifiant de la fiche
- 18cbb40d-c708-459a-bf38-b3afcf59f68a XML
- Langue
- en
- Jeu de caractères
- Utf8
- Type de ressource
- Jeu de données
- Date des métadonnées
- 2020-06-04T00:36:33
- 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