All Wales Phase 1 Terrestrial - 1Kmsq

Cam 1 Daearol - 1 cilomedr sgwar

This is a spatial dataset made up of point dataset of Phase 1 habitat areas in every 1 km square in Wales.

The data are derived from a programme of field recording that was begun by the Nature Conservancy Council (NCC) in 1979 and continued by the former Countryside Council for Wales (CCW) after restructuring in 1991. The original field surveys were carried out as part of a national habitat survey programme required to implement conservation at a local level.

This electronic dataset was created for the generation of national statistics on habitat coverage (see metadata for All Wales Phase 1 Terrestrial - 1kmsq - Access database). The dataset was subsequently imported into a GIS to enable its disaggregation into various different geographical regions within Wales. Habitat areas are summed over regions and districts within 1 km squares. Version 2 is a point layer of 1 km square centroids; habitats are labelled with Phase 1 lettered and alphanumeric codes; a 'modbog' column identifies whether modified bog (E.1.7, E.1.8 and E.4) is derived from blanket bog or raised bog; habitat areas are given for upland, lowland and total. Version 3 was derived to facilitate data disaggregation and reporting. In it areas of heath-grass mosaics (D.5, D.6 and D.7) are split 50:50 between the appropriate heathland and grassland classes; modified blanket bog is labelled E.1.6.1.2 and modified raised bog is labelled E.1.6.2.2; the Phase 1 fen categories are combined as E.3 and modified fen as E.3.1; the saltmarsh categories are combined as H.2.6; limestone pavement is combined with basic rock; intertidal habitats are removed because they were mapped in greater detail by CCW's Phase 1 Intertidal Survey (1996-2005). Version 3 comprises a non-mappable browser table of habitat areas per 1 km square, a table of 1km square centroids and a table of 1 km square polygons. The three tables link on the grid square field.

Dynodydd Identifier: NRW_DS100238

Teitl Amgen Alternative Title

Phase 1 1kmsq V3 centre point.lyr
Phase 1 1kmsq V3.lyr
Phase 1 1kmsq V2.lyr
Ph1 Terr - 1Kmsq

Laith Metadata Metadata Language: English

Lineage: The Field survey spanned from 1979 to 1999. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1 - 0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor). Methods for the lowland survey followed the Handbook for Phase 1 Habitat Survey with some minor modifications adopted for use in Wales (Howe E.A. and Blackstock T.H. (1991) Supplementary Notes for Phase I Survey in Wales. CCW, Bangor).

All field mapping was carried out by trained and closely co-ordinated teams of surveyors. A study of survey reliability was conducted during the lowland phase (Kerry, Rimes, Smith, Williams. 1994. An Assessment of Errors in Phase I Habitat Survey in Wales. Bangor: Countryside Council for Wales, Report No. 94/4/1). It showed the field mapping to be 83% repeatable (Stevens, Blackstock, Howe, Stevens. 2004. Repeatability of Phase 1 habitat survey. J. Environ. Manage. 73, 53-59).

The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad) Dataset Reference Date (Publication): 2006-04-26

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

Nature Conservancy Council (NCC)

c/o Natural Resources Wales, Maes Y Ffynnon, Penrhosgarnedd, Bangor, LL57 2DW, Wales

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

Extent

Hyd Geographic Extent: Wales (WLS)

Fformat - Math a Disgrifiad Format Type and Description

Geographic Information System ( )

Specification

ESRI Feature Class

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: This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree: false

Lineage: The Field survey spanned from 1979 to 1999. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1 - 0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor). Methods for the lowland survey followed the Handbook for Phase 1 Habitat Survey with some minor modifications adopted for use in Wales (Howe E.A. and Blackstock T.H. (1991) Supplementary Notes for Phase I Survey in Wales. CCW, Bangor).

All field mapping was carried out by trained and closely co-ordinated teams of surveyors. A study of survey reliability was conducted during the lowland phase (Kerry, Rimes, Smith, Williams. 1994. An Assessment of Errors in Phase I Habitat Survey in Wales. Bangor: Countryside Council for Wales, Report No. 94/4/1). It showed the field mapping to be 83% repeatable (Stevens, Blackstock, Howe, Stevens. 2004. Repeatability of Phase 1 habitat survey. J. Environ. Manage. 73, 53-59).

The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.

Allweddair

Keywords

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

Math Type: Theme

Theme

Dyfyniad

Citation

Dyddiad (Cyhoeddiad) Date (Publication): 2008-06-01

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

Allweddair

Keywords

NRW Thesaurus

Phase 1 Survey (Phase I)
geographical information systems (GIS)
habitat surveys (habitat monitoring)

Math Type: Theme

Theme

Dyfyniad

Citation

Dyddiad (Cyhoeddiad) Date (Publication): 2024-06-19

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

Code: British National Grid (EPSG::27700)

Gwybodaeth Cynnwys

Content Information

Proffil CNC

NRW Profile

Elfennau CNC

Custom Elements

NRW Related Title: Supplementary notes for phase 1 survey in Wales

NRW Related Title: An assessment of errors in Phase I habitat survey in Wales. Confidential

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 on 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 All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.

Attribution Statement

Other constraints: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.

Licence

Other constraints: Open Government Licence

Metadata

Dynodydd Ffeil File Identifier: 4f4c4942-4343-5764-6473-313030323338 XML

Laith Metadata Metadata Language: English

Parent Identifier: Terrestrial Phase 1 Habitat Survey
NRW_DS24715

Math o adnodd Resource type: Dataset

Dataset

Dyddiad Metadata Metadata Date: 2025-02-04T09:59:06.054Z

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

Access the portal

Full access to the portal and metadata.

All Wales Phase 1 Terrestrial - 1Kmsq

Cam 1 Daearol - 1 cilomedr sgwar

Identification

Extent

Extent

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Ansawdd Data

Data quality

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Allweddair

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Gwybodaeth Cynnwys

Content Information

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Elfennau CNC

Custom Elements

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Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

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Ansawdd Data Data quality

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Allweddair Keywords

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Spatial Reference System

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Gwybodaeth Cynnwys Content Information

Proffil CNC NRW Profile

Elfennau CNC Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Attribution Statement

Licence

Metadata

Metadata

Publishing Body

Ansawdd Data

Data quality

Allweddair

Keywords

Dyfyniad

Citation

Allweddair

Keywords

Dyfyniad

Citation

Gwybodaeth Cynnwys

Content Information

Proffil CNC

NRW Profile

Elfennau CNC

Custom Elements