Alternate title

GB100233

Date (Creation)

2013-09-17T00:00:00.000Z

Citation identifier

628d92eb-1d82-41fc-a5ae-769023a4fba7

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Natural England		MarineGIData@naturalengland.org MarineGIData@naturalengland.org.uk	Owner

GEMET - INSPIRE themes, version 1.0

• Oceanographic geographical features
• Habitats and biotopes

GEMET - Concepts, version 4.1.3

• habitat
• biotope

Access constraints

Other restrictions

Other constraints

no limitations to public access

Use constraints

Other restrictions

Other constraints

Open Government Licence

Spatial representation type

Vector

Denominator

87000

Language

English

Topic category

• Biota
• Oceans

Begin date

2011-05-01T00:00:00.000Z

End date

2011-11-30T00:00:00.000Z

Reference system identifier

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

Distribution format

Name	Version
ESRI Shapefile	1
GML	3.2.1

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms	gb100233
OGC:WFS	https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs	gb100233
WWW:DOWNLOAD-1.0-http--download	https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB100233.zip	EMODnet Seabed Habitats static download

Hierarchy level

Dataset

Statement

The biotope map showed the presence and extent of Annex I rocky reef sub-features (as defined by the Isle of Scilly

Management scheme 2010), this has been determined by acoustic and video ground-truthing on two survey occasions in 2011. The combined surveys confirmed the presence of upstanding and boulder reefs (high confidence Annex 1 reef) up to 0.5-1.5 nautical miles off the coast, covering a total of 809 hectares.

These complex rock formations were assigned to one (or combination) of five EUNIS classifications; A3.2142, A4.121, A4.131, A4.132 and A4.139 characterised by species such as Laminaria spp.(A3.2142 only), Corynactis viridis, Caryophyllia smithii, Pentapora fascialis, Metridium senile, Alcyonium digitatum, axinellid sponges and Eunicella verrucosa. Low lying boulders and raised bedrock found within the medium confidence Annex I reef (covering 393 hectares) contained biotope A4.2122 (characterised by P. fascialis and C. smithii). The area of flat bedrock was not classed as Annex I reef and was ascribed to EUNIS classes A4.2 and A4.21. Further areas of sandy and coarse sediment were found in the offshore region and ascribed to EUNIS biotopes A5.4, A5.441, A5.2 and A5.41.

The results arising from the 2011 surveys were compared with those from a previous survey conducted by Munro and Nunny (1998). However, this comparison was limited since there were only a few instances where both investigations surveyed the same areas.

Nevertheless, the 2011 surveys did reveal some areas of reef which had previously been recorded as sediment habitat.

In the map itself each of the polygons was assigned a EUNIS code of 'A4.1' due to the report indicating multiple EUNIS codes. This 'A4.1' was used in the translation from EUNIS version 2007-11 into Habitats Directive Annex I Habitats. This was completed by JNCC and was also formatted to meet the Data Exchange Format v4.1 required for EMODnet uploads in February 2024.

Metadata

File identifier

628d92eb-1d82-41fc-a5ae-769023a4fba7 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2024-03-26T10:16:00.284Z

Metadata author

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