2010 Countryside Council for Wales, Species and Habitat Diversity Confidence Layer

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  • wel
  • All

This layer was produced for CCW as part of the 'Identifying Marine Biodiversity Hotspots in Wales' project. Confidence ratings, based on the quality and quantity of data used in the final species diversity analysis, was calculated for each hexagonal unit to provide users with a view of the underlying data when examining hotspot occurrence. The purpose of this data capture was to establish species diversity from known data for the Welsh coastline taken from the mean high-water datum to 12 nautical miles offshore.

Identification

Dynodydd
Identifier
NRW_DS112406
Teitl Amgen
Alternative Title
  • Cyngor Cefn Gwlad Cymru 2010, Haen hyder amrywiaeth rhywogaethau a chynefinoedd
  • whole_region_confidence
Laith Metadata
Metadata Language
English
Lineage

Confidence ratings based on the quality and quantity of data used in the final analysis were calculated for each hexagonal unit to provide users with a view of the underlying data when examining hotspot occurrence. A confidence rating was calculated using a three point categorical scale from high to low. The average quality for each hexagon was calculated by assigning numerical values to each sample (high, medium and low were allocated 3, 2 and 1 respectively) and then the mean for each hexagon was calculated. The sample counts per hexagon were also aggregated into high, medium and low, using the natural breaks classification. Once the high, medium and low values were calculated for each hexagon, confidence was calculated using the matrix a confidence matrix (see additional information). 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.
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

Confidence ratings based on the quality and quantity of data used in the final analysis were calculated for each hexagonal unit to provide users with a view of the underlying data when examining hotspot occurrence. A confidence rating was calculated using a three point categorical scale from high to low. The average quality for each hexagon was calculated by assigning numerical values to each sample (high, medium and low were allocated 3, 2 and 1 respectively) and then the mean for each hexagon was calculated. The sample counts per hexagon were also aggregated into high, medium and low, using the natural breaks classification. Once the high, medium and low values were calculated for each hexagon, confidence was calculated using the matrix a confidence matrix (see additional information). 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.
 

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
  • species (see also endangered species)
  • distributions
  • confidence
  • 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
 

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 2010. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313132343036 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
2024-05-31T09:32:11.449Z
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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