BRT carbonate sand model Agder-Telemark, 2011

Region: The counties Aust-Agder and Telemark

Number of field observations: 1848

Field sampling years: 1992 and 2008

Prevalence: 13.6%

Presence / absences: 252/1596

Method: BRT run in R with the R-package Dismo. (The model predicts carbonate sand on peaks and in sheltered areas where it is unlikely to find carbonate sand. Such areas have been identified through rules set up in collaboration with geologists at Geological Survey of Norway (NGU; curvature index values >|1|, and the wave exposure index less than 10 000, cf Rinde et al. 2006) and removed from the shape layers for predicted presence of carbonate sand created from the grid layer.

Number of predictor variables: 10

Information about the predictor variables: curvature at coarse, medium and detailed resolution with a 1025, 525 and 125 m moving calculating window respectively, based on a 25 m resolution DEM; DEM, slope at two resolutions (12.5 and 25 m); wave exposure, longitude, and an optimal radiation index, all with 25 m resolution; and aspect based on a 12.5 resolution DEM.

AUC internal: 0.96.

Alternate title: csandAT10

Date (Publication): 2011-12-31T00:00:00

Presentation form: Digital map

Purpose: Research

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
NIVA	Eli Rinde	eli.rinde@niva.no	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: 2008-12-31T23:00:00

Vertical extent

Minimum value: -1000

Maximum value: 0

Supplemental Information: Rinde E, Rygg B, Bekkby T, Is├ªus 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
WWW:LINK-1.0-http--link	http://www.emodnet-seabedhabitats.eu/map
WWW:DOWNLOAD-1.0-http--download	http://geo.ices.dk/geonetwork/srv/en/resources.get?id=826&fname=&access=private
OGC:WMS-1.1.1-http-get-map	http://213.122.160.75/scripts/mapserv.exe?map=D:/Websites/MESHAtlantic/map/MESHAtlanticWMS.map	EMODnet Seabed Habitats Web Map Service

Metadata

File identifier: 959adb23-3fde-4241-b945-89062fc7cb50 XML

Metadata language: eng

Character set: UTF8

Date stamp: 2016-09-13T11:50:09

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	eli.rinde@niva.no	Point of contact

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