Species and habitats - Pleuronectes platessa - Immature - CGFS annual abundance in October (1989-2006)

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.

Simple

Alternate title
CGFS_species_geostatA
Date ( Publication )
2009-12-31T00:00:00
Identifier
CHARM_PLEUPLA_S0_CGFS_06_R
Presentation form
Digital map
Other citation details
Source CHARM Consortium
Credit
IFREMER
Credit
CHARM consortium
Status
Completed
Resource provider
Ifremer - Franck Coppin
Custodian
CHARM Consortium - CHARM Consortium
Maintenance and update frequency
As needed
Thèmes Sextant ( Theme )
  • /Biological Environment/Species/Fish Species of Commercial Interest
Keywords ( Discipline )
  • Répartition des espèces
  • CHARM
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Habitats et biotopes
external.theme.gemet ( Theme )
  • ressource halieutique
Use limitation
research-only
Access constraints
License
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"
Spatial representation type
Grid
Denominator
2500
Metadata language
fr
Metadata language
en
Character set
UTF8
Topic category
  • Oceans
  • Biota
  • Environment
Environment description
Microsoft Windows XP ; ESRI ArcGIS 9.x
Geographic identifier
Eastern English Channel
N
S
E
W
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Begin date
1989-01-01
End date
2007-12-31
Reference system identifier
WGS 84 (EPSG:4326)
Number of dimensions
2
Dimension name
Column
Dimension size
768
Resolution
0.009  degree
Dimension name
Row
Dimension size
660
Resolution
0.009  degree
Cell geometry
Area
Transformation parameter availability
No

Distributor

Distributor
Ifremer - Centre de Brest
OnLine resource
CHARM web site ( WWW:LINK )

CHARM web site

OnLine resource
CHARM_PLEUPLA_S0_CGFS_89_R ( OGC:WMS )

1989

OnLine resource
CHARM_PLEUPLA_S0_CGFS_90_R ( OGC:WMS )

1990

OnLine resource
CHARM_PLEUPLA_S0_CGFS_91_R ( OGC:WMS )

1991

OnLine resource
CHARM_PLEUPLA_S0_CGFS_92_R ( OGC:WMS )

1992

OnLine resource
CHARM_PLEUPLA_S0_CGFS_93_R ( OGC:WMS )

1993

OnLine resource
CHARM_PLEUPLA_S0_CGFS_94_R ( OGC:WMS )

1994

OnLine resource
CHARM_PLEUPLA_S0_CGFS_95_R ( OGC:WMS )

1995

OnLine resource
CHARM_PLEUPLA_S0_CGFS_96_R ( OGC:WMS )

1996

OnLine resource
CHARM_PLEUPLA_S0_CGFS_97_R ( OGC:WMS )

1997

OnLine resource
CHARM_PLEUPLA_S0_CGFS_98_R ( OGC:WMS )

1998

OnLine resource
CHARM_PLEUPLA_S0_CGFS_99_R ( OGC:WMS )

1999

OnLine resource
CHARM_PLEUPLA_S0_CGFS_00_R ( OGC:WMS )

2000

OnLine resource
CHARM_PLEUPLA_S0_CGFS_01_R ( OGC:WMS )

2001

OnLine resource
CHARM_PLEUPLA_S0_CGFS_02_R ( OGC:WMS )

2002

OnLine resource
CHARM_PLEUPLA_S0_CGFS_03_R ( OGC:WMS )

2003

OnLine resource
CHARM_PLEUPLA_S0_CGFS_04_R ( OGC:WMS )

2004

OnLine resource
CHARM_PLEUPLA_S0_CGFS_05_R ( OGC:WMS )

2005

OnLine resource
CHARM_PLEUPLA_S0_CGFS_06_R ( OGC:WMS )

2006

Protocol
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Name
1989
Description
1989
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1990
Description
1990
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1991
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1992
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Description
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Description
2005
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Name
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Description
2006
Hierarchy level
Dataset
Statement
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.
Description
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 experimentala 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
CGFS, annual scientific survey of IFREMER
File identifier
9862516f-99ab-42d0-bdb6-c3041962b36f XML
Metadata language
en
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2020-06-04T00:33:58
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0
Point of contact
Ifremer - Fanny Lecuy
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Habitats et biotopes
Thèmes Sextant
/Biological Environment/Species/Fish Species of Commercial Interest
external.theme.gemet
ressource halieutique

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Associated resources

Not available