Species and habitats - Scyliorhinus canicula - Female - Mature - Mean abundance and standard deviation, (CGFS 1991-2009)
Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation. Abundance mean (mean) and standard deviation (st) have been calculated.
Simple
Identification info
- Alternate title
-
CGFS_species_geostatS
- Date (Publication)
- 2012-04-13T00:00:00
- Citation identifier
- CHARM_SCYOCAN_F1_CGFS_MEAN_SD
- Presentation form
- Digital map
- Convention
-
Source CHARM Consortium
- Credit
-
IFREMER
- Credit
-
CHARM consortium
- Status
- Completed
- Point of contact
-
Organisation Individual Electronic mail address ORCID Role Ifremer
Franck Coppin
Resource provider CHARM Consortium
CHARM Consortium
Custodian
- Spatial representation type
- Grid
Spatial resolution
Equivalent scale
- Denominator
- 2500
- Topic category
-
- Oceans
- Biota
- Environment
Extent
- Geographic identifier
- Eastern English Channel
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Extent
- Time period
- 1988-01-01 2006-12-31
- Maintenance and update frequency
- As needed
- Thèmes Sextant
-
-
/Biological Environment/Species/Fish Species of Commercial Interest
-
- Discipline
-
-
Species data set
-
CHARM
-
Grande roussette
-
Nursehound
-
- GEMET - INSPIRE themes, version 1.0
-
-
Répartition des espèces
-
- external.theme.gemet
-
-
ressource halieutique
-
Resource constraints
- Use limitation
-
research-only
- Access constraints
- License
- Use constraints
- Other constraints
-
Has to be cited this way in maps : "Source CHARM Consortium"
- Other constraints
-
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"
- Language
- Français
- Character encoding
- UTF8
- Language
- English
- Character encoding
- UTF8
- Environment description
-
Microsoft Windows XP ; ESRI ArcGIS 9.x
Distribution Information
- Distributor contact
-
Organisation Individual Electronic mail address ORCID Role Ifremer - Centre de Brest
Distributor
- Date
- OnLine resource
-
CHARMIII_MEAN_SHARKS_scyocan1f
Mean
- OnLine resource
-
CHARMIII_SD_SHARKRAYS_scyocan1f
Standard deviation
OnLine resource
- Protocol
-
COPYFILE
- Name of the resource
-
CHARMIII_MEAN_SHARKS_scyocan1f
- Description
-
Mean
OnLine resource
- Protocol
-
COPYFILE
- Name of the resource
-
CHARMIII_SD_SHARKRAYS_scyocan1f
- Description
-
Standard deviation
Resource lineage
- Lineage
-
The survey extends from the Eastern English Channel to the south of the North Sea, which corresponds to ICES divisions VIId and IVc. The study area is divided into rectangles of 15¿ latitude and 15¿ 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.One or two 30 minutes hauls are performed within each rectangle of the CGFS grid (two in the coastal zone and one offshore). 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. Since 1997, temperature and salinity (surface and bottom) are measured using a probe attached on the headrope of the trawl. At each sampling station, all the fish species are sorted, weighed, counted and measured. For certain commercial species, bony structures (otoliths) are collected.
- Hierarchy level
- Dataset
- Description
-
CGFS, annual scientific survey of IFREMER
Process step
- Description
-
For each species, the average (mean) and the standard deviation (sd) are computed from kriged annual maps over all the available period. The sum of all annual kriging error over the same period (v) is also computed. The resulting grids of points were 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 average pattern (mean), its interannual variability (sd) and its overall interpolation error (summed kriging error) of each parameter.
Spatial representation info
- Number of dimensions
- 2
- Dimension name
- Column
- Dimension size
- 1288
- Resolution
- 0.009 degree
- Dimension name
- Row
- Dimension size
- 618
- Resolution
- 0.009 degree
- Cell geometry
- Area
- Transformation parameter availability
- false
Reference System Information
- Reference system identifier
- WGS 84 (EPSG:4326)
Metadata
- Metadata identifier
- c857b5d5-2113-4616-ac30-646d2bbd8715
- Language
- English
- Character encoding
- UTF8
- Contact
-
Organisation Individual Electronic mail address ORCID Role Ifremer
Erwann Quimbert
Point of contact
Type of resource
- Resource type
- Dataset
- Metadata linkage
-
https://sextant.ifremer.fr/geonetwork/srv/api/records/c857b5d5-2113-4616-ac30-646d2bbd8715
- Date info (Creation)
- 2012-04-13T14:40:48Z
- Date info (Revision)
- 2025-05-16T00:06:50.16333Z
Metadata standard
- Title
-
ISO 19115-3 - SEXTANT
- Edition
-
1.0
Source CHARM Consortium
accessData
Overviews
Spatial extent
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