Method for creating a composite map of Annex I Submarine structures made by leaking gases for Croker Carbonate Slabs cSAC/SCI 2018
Marine JNCC Publications Marine Physical Parameters Protected Areas Seabed Habitats and Geology 0963-8091 Habitats Directive JNCC report series Marine Marine Habitats Marine protected area 611 Identification of Annex 1 Reef and subtypes Croker Carbonate Slabs SCI
This report details the input data and method used to create a composite Habitats Directive Annex I feature extent map.
Submarine structures made by leaking gases are listed for protection under Annex I of the Habitats Directive (92/43/EEC1). This means that the UK has an obligation to provide protection for this feature through the establishment and management of Special Areas of Conservation (SACs). To aid in the protection and reporting for this feature and the designation and delineation of SACs, JNCC produces extent maps for the feature where sufficient data exist.
Existing polygon data from three previous habitat maps was combined with groundtruthing point information, to build up a composite image of “High” and “Potential” Annex I feature within the site.
Resource type Publication
Topic category Environment
Reference date 2018·02·01
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.
In order to provide advice based on the best available evidence on the presence and extent of submarine structures within the site, we identified a need for a single composite map, including extent information from three surveys and including consistent logic in resolving differences between the datasets.
Digital and Data Solutions, JNCC author
Limitations on public access No limitations
Use constraints Available under the Open Government Licence 3.0
Metadata date 2019·07·08
Metadata point of contact
Digital and Data Solutions, JNCC