Subtidal Habitat Diversity Layer (2010)

  • English
  • wel
  • All

This layer was produced for Countryside Council for Wales (CCW) as part of the 'Identifying Marine Biodiversity Hotspots in Wales' project. Habitat diversity in the range is measured using biotope richness, biotope distinctness and the number of Biodiversity Action Plan priority features metrics. A hexagonal grid with a resolution of 1 km is used to present these metrics. The purpose of this data capture was to establish subtidal diversity from known data around the Welsh coastline, from mean high water to 12 nautical miles offshore. An assessment of the suitability of data was carried out, taking into account the source of the data, its age, spatial, taxonomic and methodological accuracy. Data were also graded on survey quality using the following three categories with respect to field surveyors: professional and academic; volunteer with expert ID; and volunteer. Derived confidence ratings were recorded in the metadata and low quality data were flagged and removed from subsequent analyses.

Identification

Dynodydd
Identifier
NRW_DS112412
Teitl Amgen
Alternative Title
  • Cyngor Cefn Gwlad Cymru 2010, Haen amrywiaeth cynefinoedd islanwol
  • subtidal_non_neighbourhood_biotope
Laith Metadata
Metadata Language
English
Lineage

Biotope information for subtidal habitats was collated from the Countryside Council for Wales (CCW) and the National Biodiversity Network (NBN) Gateway (Marine Recorder Snapshot), the MarLIN databases and the Data Archive for Seabed Species and Habitats data (DASSH). 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. Metrics used 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.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2010-03-31
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Countryside Council for Wales (CCW)
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
Cychwynnwr
Originator
  Joint Nature Conservation Committee (JNCC)
Monkstone House, City Road, Peterborough, PE1 1JY, England
http://www.jncc.gov.uk/
Cychwynnwr
Originator
  Marine Life Information Network (MarLIN)
The Marine Biological Association of the UK, Citadel Hill, Plymouth, Devon, PL1 2PB
http://www.marlin.ac.uk/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

benthic boundary layer
 
 

Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Geographic Information System ()

    Specification

    MapInfo layers

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
Conformity
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
Explanation
Degree
false
Lineage

Biotope information for subtidal habitats was collated from the Countryside Council for Wales (CCW) and the National Biodiversity Network (NBN) Gateway (Marine Recorder Snapshot), the MarLIN databases and the Data Archive for Seabed Species and Habitats data (DASSH). 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. Metrics used 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.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair
Keywords

NRW Thesaurus
  • marine (maritime)
  • marine conservation (see also specific geographical areas or sites eg Skomer-marine protected areas,marine nature reserves)
  • marine habitat
  • habitats (see also specific types of habitats)
  • biotopes
  • diversity
  • Subtidal
  • geographical information systems (GIS)
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Habitat characterisation
  • Habitat extent
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Adolygu)
Date (Revision)
2021-01-06
Code
geonetwork.thesaurus.external.theme.rdf+xml

Allweddair
Keywords

Integrated Public Sector Vocabulary
  • biodiversity
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Adolygu)
Date (Revision)
2013-04-03
Code
geonetwork.thesaurus.external.theme.subjects
 

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Mapping marine benthic biodiversity in Wales
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313132343132 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Mapping Marine Benthic Biodiversity in Wales

NRW_DS111816
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-05-31T09:22:27.769Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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