4ef9b811-6465-4342-bf43-8ecc60f010a3 JNCC HabitatMapping@jncc.gov.uk 2020-01-15T12:09:19 ISO19115 2003/Cor.1:2006 WGS 84 (EPSG:4326) EPSG 7.9 Composite map describing MDAC coverage at Croker Carbonate Slabs SAC GB001552 2018-02-01 2018-04-25 GB001552 EMODnetSeabedHabitats A composite Habitats Directive Annex I feature extent map of Submarine structures made by leaking gases for the Croker Carbonate Slabs cSAC/SCI was created by JNCC staff to provide the most up-to-date knowledge of MDAC coverage within the site. Existing polygon data from three previous surveys (CEND1108, CEND0513 and CEND2315) and habitat maps were combined with groundtruthing point information, to build a composite understanding of ÔÇ£HighÔÇØ and ÔÇ£PotentialÔÇØ Annex I feature within the site. JNCC habitatmapping@jncc.gov.uk Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Habitats directive http://inspire.ec.europa.eu/codelist/ReferenceHabitatTypeSchemeValue 2018-04-16 ┬® JNCC. Data may be re-used under the terms of the Open Government Licence v3. geossAttribution no limitation 10000 environment oceans -5.331282 -5.149255 53.368742 53.549679 2008-01-01 2015-12-31 Duncan, G. 2018. Method for creating a composite map of Annex I Submarine structures made by leaking gases for Croker Carbonate Slabs cSAC/SCI. JNCC Report No. 611. JNCC, Peterborough. ISSN 0963-8091. [Available from: http://jncc.defra.gov.uk/page-7553] ESRI Shapefile 1.0 http://jncc.defra.gov.uk/page-7553 WWW:LINK-1.0-http--link Method for creating a composite map of Annex I Submarine structures made by leaking gases for Croker Carbonate Slabs cSAC/SCI Method document for dataset https://www.emodnet-seabedhabitats.eu/access-data/launch-map-viewer/?zoom=18&center=-0.00005,0.00048&layerIds=510&baseLayerId=1&activeFilters=NobwRANghgngpgJwJIBMwC4CsBGADAGjADMBLCAF0VQ0wCZDSLEAZAe1YGsBXAB1QGcMwALoMylBABU4AD3IYwAcQBCuXNkx0wAX2FA WWW:LINK-1.0-http--link EMODnet Seabed Habitats Map Viewer View map "GB001552" on the EMODnet Seabed Habitats Map Viewer https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms? OGC:WMS gb001552 View map "GB001552" through the EMODnet Seabed Habitats "Map Library" Web Map Service https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs? OGC:WFS gb001552 Access data from map "GB001552" through the EMODnet Seabed Habitats "Map Library" Web Feature Service https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB001552.zip WWW:LINK-1.0-http--link EMODnet Seabed Habitats download Corrigendum to INSPIRE Metadata Regulation published in the Official Journal of the European Union, L 328, page 83 2009-12-15 See the referenced specification true 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 2010-12-08 See the referenced specification true CEND1108 data derived from sidescan sonar and imagery, with manual delineation of MDAC into high and low relief. CEND0513 data derived from multibeam echo sounder, grab samples and imagery. Dataset describes "Hard substrate" in the site, using Object Based Image Analysis (OBIA) and Random Forest classification. CEND2315 data derived from multibeam echo sounder, grab samples and imagery. Dataset describes likely presence of MDAC using OBIA and Random Forest classification. Due to the presence-only method used in the creation of the dataset, areas where the analysis did not result in an MDAC prediction, should not be taken as evidence of a lack of MDAC. A qualitative confidence assessment was undertaken alongside the creation of the dataset, with polygons classes as increasing confidence from 0 to 4. The three maps were used as input datasets in ArcGIS's Union tool, to produce an intersection of all possible combinations of classes. The output was then attributed confidence values based on agreement between the datasets. Grab samples from CEND2315 that were tested for MDAC presence using isotope analysis were used to identify possible ÔÇ£high confidenceÔÇØ areas that were not attributed as such in the output of the intersection method (section 2.2). The output of the intersection step was dissolved, retaining single part features, to produce an overview of contiguous areas. Point records of confirmed MDAC were then used to select underlying areas of the polygon output with additional evidence of MDAC presence by location. Polygons with an area of over 0.1km2 (Projection ÔÇô EPSG:3035) were deselected to avoid overextrapolation from the point data. Polygons within the three remaining selected areas were attributed as ÔÇ£HighÔÇØ final confidence, and information regarding this manual further step was included in the ÔÇ£VAL_COMMÔÇØ (validation comments) field within the dataset.