af000be1-0983-4c6a-8f62-94f41a5b131a
eng
Joint Nature Conservation Committee
Peterborough
Cambs
PE1 1JY
United Kingdom
habitatmapping@jncc.gov.uk
2021-02-02T13:06:30
ISO 19115:2003/19139
1.0
WGS 1984
Broadscale habitat (EUNIS level3) for the Mid St Geroge's Channel recommended Marine Conservation Zone (rMCZ)
GB001503
2014-09-22T00:00:00
Feature class depicting broadscale habitat features at the Mid St GeorgeÔÇÖs Channel rMCZ. The map is a result of an integrated analysis of newly acquired and previously available acoustic data together with ground-truthing data collected by a dedicated survey of the sitein 2013. Habitat classes observed at each ground-truthing station were used to inform a semi-automated process of map production using object-based image analysis (OBIA). The map shows the seabed at the site to be characterised largely by ÔÇÿA5.1 Subtidal coarse sedimentÔÇÖ and ÔÇÿA5.4 Subtidal mixed sedimentsÔÇÖ, which are mapped together as a complex due to difficulty in separating the two from the underlying acoustic data. Smaller patches of ÔÇÿA5.2 Subtidal sandÔÇÖ and ÔÇÿA4.2 Moderate energy circalittoral rockÔÇÖ are also found within the site.
A new habitat map for the Mid St Georges Channel Marine recommended Marine Conservation Zone (rMCZ) was produced by analysing and interpreting newly acquired and previously available acoustic data together with ground-truthing data collected by a dedicated survey of the site.
Full coverage multibeam echosounder (MBES) data covering 70% of the Mid St GeorgeÔÇÖs Channel rMCZ was collected in 2012 by Osiris Projects. An additional block of full coverage MBES data was collected by RV Cefas Endeavour on CEND05/13, adding a further 5% area coverage of the site. The remaining 25% of the rMCZ has partial coverage (31%) MBES data collected under the Mid Irish Sea Project. More detail on the acoustic data used, and references to the aquisitieon reports can be found in the Mid St Georges Channel Marine rMCZ Post-Survey Site Report (Defra Contract Reference: MB0129; Report Number 29)
Ground-truth sampling for the site was planned using a standard MCZ ground-truthing sampling grid, applied to different habitat types identified from the processed bathymetry and backscatter layers. Station positions were then modified to target features of interest, in particular suspected reef features. The survey was carried out between 1-6th May 2013 on the RV CEFAS Endeavour cruise CEND0513. Ground truth samples were collected from 130 stations. Benthic grab samples were recovered at 115 stations, video transects at 71stations and short (2 minute) deployments of the drop camera were carried out at a further 49 grab stations. Station metadata are presented in Appendix 1 of the Mid St GeorgeÔÇÖs Channel rMCZ Post-Survey Site Report (Defra Contract Reference: MB0129; Report Number 29) and further detail on ground-truth sample collection can be found in the Site Report and the Mid St GeorgeÔÇÖs Channel rMCZ Survey Report.
The new habitat map was produced via a combination of object-based image analysis (OBIA) of the acoustic data, implemented in the software package eCognition┬« v8.7.2, and expert judgement aided by statistical analysis, linking the ground truth observations to the acoustic and topographic properties. Full methodology for production of the broadscale habitat layer, with appropriate references for methods used, can be found in the Mid St GeorgeÔÇÖs Channel rMCZ Post-Survey Site Report.
Research, Conservation
Joint Nature Conservation Committee
Marine Mapping Scientist
+44 (0) 1733 866915
Marine Mapping Scientist
Joint Nature Conservation Committee
Monkstone House
City Road
Peterborough
Cambs
PE1 1JY
United Kingdom
habitatmapping@jncc.gov.uk
http://jncc.gov.uk
WWW:LINK-1.0-http--link
JNCC Homepage
Homepage for the Joint Nature Conservation Committee
Rebecca Lowe
Defra
Rebecca.Lowe@defra.gsi.gov.uk
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Habitats
Marine habitat mapping
Habitats and biotopes
GEMET - INSPIRE themes, version 1.0
Available under the Open Government License v3
4000
eng
environment
2012-03-17T00:00:00
2013-05-01T00:00:00
-5.466667
-5.01358
52.53333
52.81675
-1000
0
http://randd.defra.gov.uk/Document.aspx?Document=12842_MidStGeorgesChannelrMCZSiteReport_V5.pdf
ESRI Shapefile
N/A
https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms?
OGC:WMS
gb001503
View map "GB001503" through the EMODnet Seabed Habitats "Map Library" Web Map Service
https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs?
OGC:WFS
gb001503
Access data from map "GB001503" through the EMODnet Seabed Habitats "Map Library" Web Feature Service
https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB001503.zip
WWW:LINK-1.0-http--link
EMODnet Seabed Habitats download
MESH Confidence Score
2008-01-01
http://www.emodnet-seabedhabitats.eu/default.aspx?page=1693
true
Overall Score: 80
Remote Score: 87
Ground-truthing Score: 70
Interpretation Score: 83