DPLUS026 British Virgin Islands Seabed Classification Map

Alternate title	VG004003
Date	2015-09-29
Date type	Creation: Date identifies when the resource was brought into existence
Unique resource identifier	e40207b8-8739-46b4-9177-03bc430dcd13

Point of contact

Organisation name	Centre for Environment Fisheries and Aquaculture Science (CEFAS)
Electronic mail address	datamanager@cefas.co.uk
Role	Owner: Party that owns the resource

Descriptive keywords

GEMET - INSPIRE themes, version 1.0	Oceanographic geographical features Habitats and biotopes
GEMET - Concepts, version 4.1.3	habitat | biotope

Spatial representation type	Vector: Vector data is used to represent geographic data

Spatial resolution

Denominator	3700

Language	English
Topic category code	{{'biota' | translate}} {{'oceans' | translate}}

Reference System Information

Unique resource identifier	http://www.opengis.net/def/crs/EPSG/0/3857

Hierarchy level	Dataset: Information applies to the dataset

Lineage

Statement

A new habitat map for the site was produced by analysing and interpreting the available acoustic data and the ground truth data collected by the dedicated survey of North St George's Channel rMCZ. The process is a combination of two approaches, statistical modelling and image analysis. To map substrata and assemblage types across the study site, object-based image analysis (OBIA; Blaschke, 2010) was utilised. The technique was implemented in the software package eCognition v8.8 combined with a predictive modelling approach using the Random Forest2 algorithm (Breiman, 2001) application within eCognition. This consists of a classification model aimed at predicting a target variable (in this case, sediment composition) based on exhaustively sampled auxiliary variables (in this case, the acoustic data). The technique has been used in previous studies to predict sediment type (Li et al., 2011a). Li et al. (2011b) showed that the Random Forest algorithm outperformed a range of other modelling techniques for predicting substrate type (Liaw and Wiener, 2002). More information about methods is available at https://data.cefas.co.uk/view/18174. For publication to EMODnet, SAERI set the shapefile's layer properties to the projection EPSG:3857 then reprojected the resulting layer to EPSG:4326 - WGS 84. SAERI then removed holes smaller than 25 meters squared and processed the attribute table to fit the specified data exchange format. All work was conducted in QGIS v3.28.4. SAERI used the original GUI (e40207b8-8739-46b4-9177-03bc430dcd13) asigned to the dataset by CEFAS as the UUID for the dataset's publication to EMODnet; SAERI created a new GUI (VG004003) for the dataset.

Domain consistency

Conformance result Specification Title Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services Date 2010-12-08 Date type Publication: Date identifies when the resource was issued Explanation This data set is conformant with the INSPIRE Implementing Rules for the interoperability of spatial data sets and services Pass Yes

mdLegalAndSecurityConstraintsSection

Resource constraints Legal constraints Access constraints Other restrictions: Limitation not listed Other constraints Other constraints no limitations to public access

Resource constraints Legal constraints Use constraints Other restrictions: Limitation not listed Other constraints Other constraints Open Government Licence (OGL) terms and conditions apply. These datasets are from work funded by DEFRA and the Darwin Initiative, therefore access is public and use will be under Crown Copyright and Open Government Licence. Data are freely available for research or commercial use providing that the originators and the Darwin Initiative are acknowledged in any publications produced. Data can be found at https://data.cefas.co.uk/view/18174.

Distribution format

ESRI Shapefile (Version: 1) GML (Version: 3.2.1)

Transfer options OnLine resource Linkage https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms Protocol OGC:WMS Name of the resource vg004003 Description View map "vg004003" through the EMODnet Seabed Habitats "Map Library" Web Map Service OnLine resource Linkage https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs Protocol OGC:WFS Name of the resource vg004003 Description View map "vg004003" through the EMODnet Seabed Habitats "Map Library" Web Feature Service OnLine resource Linkage https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_VG004003.zip Protocol WWW:LINK-1.0-http--link Name of the resource EMODnet Seabed Habitats Static Download

File identifier	e40207b8-8739-46b4-9177-03bc430dcd13
Metadata language	English
Character set	UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
Hierarchy level	Dataset: Information applies to the dataset
Date stamp	2023-10-30T14:38:54.203Z
Contact Organisation name South Atlantic Environmental and Research Institue (SAERI) Electronic mail address info@saeri.ac.fk Role Point of contact: Party who can be contacted for acquiring knowledge about or acquisition of the resource