Alternate title

GB003020

Date (Publication)

2015-05-10

Date (Revision)

2015-05-10

Date (Creation)

2015-05-10

Citation identifier

http://emodnet-seabedhabitats.eu / GB003020

Point of contact

Organisation name	Individual name	Electronic mail address	Role
DAERA Marine and Fisheries Division		Marine.InfoRequests@daera-ni.gov.uk	Owner
AFBI		info@afbini.gov.uk	Originator

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes

GEMET - Groups, version 2.4

• ENVIRONMENT (natural environment, anthropic environment)

• BIOSPHERE (organisms, ecosystems)

GEMET - Supergroups, version 2.4

• NATURAL ENVIRONMENT, ANTHROPIC ENVIRONMENT

GEMET - Themes, version 2.4

• natural areas, landscape, ecosystems

Use limitation

geossAttribution

Access constraints

Other restrictions

Other constraints

no limitation

Distance

1  m

Language

English

Topic category

• Oceans

Begin date

2012-01-01

End date

2013-12-31

Distribution format

Name	Version
unknown	unknown

OnLine resource

Protocol	Linkage	Name
	https://www.afbini.gov.uk/sites/afbini.gov.uk/files/publications/strangford_lough.pdf
OGC:WMS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms?	gb003020
OGC:WFS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs?	gb003020
WWW:LINK-1.0-http--link	https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB003020.zip	EMODnet Seabed Habitats download

Hierarchy level

Dataset

Statement

Due to the high number of habitats identified in the ground-truthing data, the use of habitat mosaics and the variation in ancillary data (e.g. detailed substratum descriptions), the groundtruthing records were summarised into a smaller number of categories to allow possible correspondence with the multibeam data derived ÔÇ£acoustic faciesÔÇØ. Level 4 ÔÇ£dominant biotope complexesÔÇØ were assigned with a total of 45 categories. These were further narrowed to 24 single (non-mosaic) biotope complexes which records were slotted into.

The clusters identified from the cluster analysis of the multibeam data were cross-tabulated with the summary biotope complexes and the ÔÇ£majorityÔÇØ biotope complex noted for each cluster. Due to the number of summary biotope complexes, it was inevitable that multiple biotope complexes mapped to each cluster. Therefore, a detailed inspection was made of each area in the lough to examine (a) the trends in the multibeam data (bathymetric derivatives and backscatter), and (b) the details of the ground-truthing data in the area (including the original, rather than summary, biotope information, including mosaics). Polygon attributes were revised accordingly to best represent, consistently, the information shown in these datasets.

Accuracy assessment was undertaken by comparing the ground-truthing biotope complexes (MNCR Level 4) with the mapped polygons (also classified at biotope complexes). The percentage of agreement was calculated for each map (main lough and the Narrows). Due to the use of mosaics, agreement was given if an example of the biotope complex in the ground-truthing samples was also in the polygon classification.

ÔÇó Agreement of 48.7% in the main Lough (all ground-truthing data included)

In addition to the accuracy assessment, a confidence assessment was completed following the MESH method (MESH, 2007).

Metadata

File identifier

97002eee-8fb8-49a4-a356-3aaf3ab1ea97 XML

Metadata language

English

Character set

MD_CharacterSetCode_utf8

Hierarchy level

Dataset

Date stamp

2020-01-15T12:24:34

Metadata standard name

ISO19115

Metadata standard version

2003/Cor.1:2006

Metadata author

Organisation name	Individual name	Electronic mail address	Role
JNCC		habitatmapping@jncc.gov.uk	Point of contact