Identification

Dynodydd

Identifier

NRW_DS112410

Teitl Amgen

Alternative Title

• Cyngor Cefn Gwlad Cymru 2010, Haen amrywiaeth cynefinoedd islanwol (dadansoddiad o gymdogaeth)
• subtidal_neighbourhood_biotope

Laith Metadata

Metadata Language

English

Lineage

Biotope information for subtidal habitats was collated from CCW and the National Biodiversity Network Gateway (Marine Recorder Snapshot from the Joint Nature Conservation Committee, JNCC). MarLIN databases and any additional data holdings within the Data Archive for Seabed Species and Habitats data (DASSH) were also used. Biotope codes were matched against EUNIS codes. Biotopes in 97.06 format were manually matched to 04.05 biotopes prior to EUNIS translation and in some instances where the code could not be accurately matched to the same level, and a higher level code was assigned. A hexagonal grid was used because they offer the best alignment to complex features, such as the Welsh coastline. The optimal size was determined 20km2 for the subtidal region. The proposed metrics to represent marine biodiversity in Wales were biotope richness, biotope distinctness and the number of priority features. Each measure was calculated for each broad sampling method type, re-combined by hexagon, and presented as a separate layer on a continuous scale. Data were queried and analysed using a neighbourhood approach (analyzing data from the adjacent six hexagons together with the central one) to identify differences (from that of a non-neighbourhood analysis) that may be due to very localized features or the alignment of the grid itself.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad)

Dataset Reference Date (Publication)

2010-03-31

Extent

Extent

Hyd

Geographic Extent

Wales (WLS)

N

W

E

S

 

Distribution

Quality

Keywords

Spatial Reference System

Content

Constraints