2010 Countryside Council for Wales, Intertidal Species Diversity Confidence Layer

This layer was produced for Countryside Council for Wales (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 around the Welsh coastline from the mean high water datum to the mean low water datum covering the intertidal zone.

Identifier: NRW_DS112402

Alternative Title

Cyngor Cefn Gwlad Cymru 2010, Haen hyder amrywiaeth rhywogaethau rhynglanwol
intertidal_confidence

Metadata Language: English

Lineage: Species information 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. 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 species 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.

Dataset Reference Date (Publication): 2010-03-31

Temporal Extent

Begin date: 1968-01-01

End date: 2008-12-31

Topic category

Biota

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Countryside Council for Wales (CCW)

Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW

http://naturalresourceswales.gov.uk/splash?orig=/

Originator

Joint Nature Conservation Committee (JNCC)

Monkstone House, City Road, Peterborough, PE1 1JY, England

http://www.jncc.gov.uk/

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

Geographic Extent: Wales (WLS)

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Format Type and Description

Geographic Information System Geographic Information System ()

Specification

MapInfo layers

Data quality

Quality Scope: Dataset

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: Species information 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. 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 species 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

GEMET - INSPIRE themes, version 1.0

Species distribution

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

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)
confidence
geographical information systems (GIS)
intertidal

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Macroalgae and seagrass taxonomy-related counts
Zoobenthos taxonomic abundance

Type: Theme

Citation

Date (Revision): 2021-01-06

Code: geonetwork.thesaurus.external.theme.rdf+xml

Keywords

Integrated Public Sector Vocabulary

biodiversity

Type: Theme

Citation

Date (Revision): 2013-04-03

Code: geonetwork.thesaurus.external.theme.subjects

Code: Latitude and Longitude (EPSG::4326)

Content Information

NRW Profile

Custom Elements

NRW Related Title: Mapping marine benthic biodiversity in Wales

Constraints

Limitations on Public Access and Use

Restriction type: 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

Use constraints type: 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

File Identifier: 4f4c4942-4343-5764-6473-313132343032 XML

Metadata Language: English

Parent Identifier: Mapping Marine Benthic Biodiversity in Wales
NRW_DS111816

Resource type: Dataset

Metadata Date: 2024-05-31T09:37:32.41Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

2010 Countryside Council for Wales, Intertidal Species Diversity Confidence Layer

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body