BRT carbonate sand model Rogaland, 2015
Region: the county Rogaland
Number of field observations: 633
Field sampling year: 1992, 1993, 2012
Prevalence: 43 and 22 for 50% and 85% calcium carbonate content respectively
Presence / absences: 275/358 and 142/491 for 50% and 85% calcium carbonate content respectively
Method: BRT run with the R-package Dismo. The grid is made up by a combination of three BRT models; two simplified models including 12 and 13 predictors for carbonate sand with 50% calcium content) and one BRT model based on 10 predictor variables for carbonate sand with 85% calcium content; all run with tree complexity equal to 5. The grid constitutes the maximum predicted probability values among these three models, which all are ÔÇ£smoothedÔÇØ by applying a neighborhood analysis (i.e. mean of 3x3 neighbor cells) in advance of combining the models).
Number of predictor variables: 10-13
Information about the predictor variables: depth, curvature at detailed, medium and coarse resolution (i.e. applying a 100, 500 and 1500 m moving calculating window respectively, based on the 25 m resolution DEM), wave exposure, slope of wave exposure, and optimal radiation index, all with 25 m resolution; minimum and average seafloor temperature, average seafloor salinity, minimum and average seafloor current speed, and slope of average seafloor current speed, the latter predictors from a hydrodynamic model with 800 m spatial resolution.
AUC internal: 0.98
Simple
- Alternate title
-
csandRog10
- Date (Publication)
- 2015-12-31T00:00:00
- Presentation form
- Digital map
- Purpose
-
Research
- Status
- Completed
- Point of contact
-
Organisation name Individual name Electronic mail address Role NIVA
Eli Rinde
Owner
- Maintenance and update frequency
- As needed
- Theme
-
-
Marine habitat mapping
-
-
GEMET - INSPIRE themes, version 1.0
-
-
Habitats and biotopes
-
- Use limitation
-
No defined limitation
- Access constraints
- Other restrictions
- Other constraints
-
View only - please contact data owner for access to full data
- Spatial representation type
- Vector
- Denominator
- 50000
- Language
-
eng
- Character set
- UTF8
- Topic category
-
- Environment
- Begin date
- 1992-01-01T00:00:00
- End date
- 2012-12-31T00:00:00
Vertical extent
- Minimum value
- -1000
- Maximum value
- 0
- Supplemental Information
-
Rinde E, Rygg B, Bekkby T, Isæus M, Erikstad L, Sloreid S-E, Longva O (2006) Documentation of marine nature type models included in Directorate of Nature Management's database Naturbase. First generation models for the municipalities mapping of marine biodiversity 2007, NIVA Report LNR 5321-2006 (In Norwegian with English abstract.)
- Reference system identifier
- EPSG:3857
- Distribution format
-
Name Version Web Map Service
1.0.0
- OnLine resource
-
Protocol Linkage Name OGC:WMS
https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms? csandrog10
Metadata
- File identifier
- 992439f3-45d0-4259-b9b8-d9ea107b3b19 XML
- Metadata language
-
eng
- Character set
- UTF8
- Date stamp
- 2022-04-28T16:34:34.837Z
- Metadata standard name
-
ISO 19115:2003/19139
- Metadata standard version
-
1.0
- Metadata author
-
Organisation name Individual name Electronic mail address Role NIVA
Eli Rinde
Point of contact