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catalog
Ifremer Sextant
type
Dataset
organization
Ifremer
representation type
grid
931 datasets found.

Bathymétrie - Arc Antillais (synthèse, 2020)

Elevation
Bathymétrie - Arc Antillais : compilation de données bathymétriques de sondeur multifaisceau, résolution 1/16 arc minute.Restriction : le MNT recouvre largement les ZEE des états de la région. Le produit n'est pas diffusable.Traitements réalisés :Depuis le début des années 1990, l’exploration scientifique de l’arc antillais a été l’opportunité d’une acquisition régulière de données de bathymétrie par sondeurs acoustiques multifaisceaux. Une…
License: not specifiedLast update: a year ago

Species and habitats - Sardina pilchardus - All ages - Preferential habitat in October modelled by Generalised Linear Modelling and its uncertainty with CGFS data

Species distribution
Modelised abundance of species or prediction uncertainty.
License: not specifiedLast update: unknown

Species and habitats - Spondyliosoma cantharus - Immature - Potential habitat in October modelled by Quantile Regression and its uncertainty with CGFS data

Species distribution
Modelised abundance of species or prediction uncertainty.
License: not specifiedLast update: unknown

Species and habitats - Syngnatidae - Larvae - All stages - IBTS Presence probability in January (2008-2011)

Species distribution
Fish larvae were collected during the night using a MIK (Methot Isaac Kidd) net (2m diameter, 500 um mesh). Abundances were expressed in term of number of individuals per 5000 cubic meter (ind.5000m-3). For clupeidae (herring and pilchard), gobiidae and ammodytidae, abundances were log-transformed (log10(x+1)) prior to analysis whereas for pleuronectidae and syngnathidae, abundances were recoded in term of presence-absence.
License: not specifiedLast update: unknown

Species and habitats - Merlangius merlangus (Whiting) - Eggs - Abundance in January (IBTS, 2007) Kriging error

Species distribution
Biological data have been expressed in abundance (number of individuals per 20 m3). Kriging error (v) resulting from the interpolation of these data was maped.
License: not specifiedLast update: unknown

Species and habitats - Loligo forbesi - All ages - Mean abundance in October, standard deviation maps during CGFS (1993-2009)

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Pleuronectes platessa - Eggs - Stage 2- IBTS annual abundance in January 2006-2009

Species distribution
Biological data have been expressed in abundance (number of eggs per 20 m3) and always required to be log-transformed using a log10(x+1) transformation.
License: not specifiedLast update: unknown

Species and habitats - Sprattus sprattus - All ages - Recurrence - IBTS Q3 (1991-2010)

Species distribution
Species habitat occupation, observed during the third quarter IBTS from 1991 to 2010, has been expressed as rare, occasional, frequent, recurrent depending on density levels and variability over time.
License: not specifiedLast update: unknown

Species and habitats - Ascidiacea - Presence probability (2006-2012)

Species distribution
Abundances were recoded in term of presence-absence. 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…
License: not specifiedLast update: unknown

Species and habitats - Merlangius merlangus- Age 0 - Recurrence, (CGFS 1988-2009)

Species distribution
Species habitat occupation has been expressed as rare, occasional, frequent, recurrent depending on density levels and variability over time.
License: not specifiedLast update: unknown

Species and habitats - Gadus morhua - Eggs - Stage 2- IBTS annual abundance in January 2006-2009

Species distribution
Biological data have been expressed in abundance (number of eggs per 20 m3) and always required to be log-transformed using a log10(x+1) transformation.
License: not specifiedLast update: unknown

Species and habitats - Clupea Harengus - Larvae - < 15mm - IBTS Annual abundance in January (2008-2011)

Species distribution
Fish larvae were collected during the night using a MIK (Methot Isaac Kidd) net (2m diameter, 500 um mesh). Abundances were expressed in term of number of individuals per 5000 cubic meter (ind.5000m-3). For clupeidae (herring and pilchard), gobiidae and ammodytidae, abundances were log-transformed (log10(x+1)) prior to analysis whereas for pleuronectidae and syngnathidae, abundances were recoded in term of presence-absence.
License: not specifiedLast update: unknown

Species and habitats - Maja brachydactyla - Multi-annual Abundance in October - CGFS (2007-2009)

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Crepidula fornicata - Multi-annual Abundance in October - CGFS (2007-2009)

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Scyliorhinus canicula - Immature - Multi-annual abundance in October during CGFS (1988-2009)

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Merlangius merlangus - Mature - CGFS annual abundance in October 2008

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Scyliorhinus canicula - Male - Mature - Annual abundance in October during CGFS 2007

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Gadus morhua - Mature - CGFS annual abundance in October 2008

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Metridium senile - Multi-annual Abundance in October - CGFS (2007-2009)

Species distribution
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.
License: not specifiedLast update: unknown

Species and habitats - Pleuronectes platessa - Mature - CGFS annual abundance in October 2007

Species distribution
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.
License: not specifiedLast update: unknown
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