Collated Saltmarsh Survey of Wales (1994 - 2004)

This, now static, dataset was collected to monitoring the progress of saltmarsh development across Wales, between 1994 and 2002. The dataset comprises of a collation of biological data recorded across different saltmarsh environments. This dataset is now archived, as more up-to-date information is available about saltmarsh habitats across Wales. However this still forms an important baseline dataset in which to monitor the health and species richness across saltmarshes and overtime. This will help inform conservation management requirements for the important saltmarsh habitats. The more up-to-date surveys can be found in the following metadata entry: 114725 Priority Marine Habitats of Wales (coastal saltmarsh).

Identifier: NRW_DS101871

Alternative Title

Collated Saltmarsh Derived GIS Layer
Arolwg o Gorsydd Heli Cymru

Metadata Language: English

Lineage: The structure of this data layer was updated in 2011 as part of a project to develop a series of priority and protected spatial marine habitat layers. The survey methodology used to collect this dataset either followed the National Vegetation Classification (NVC) Phase 2 methodology or intertidal Phase 1 methodology. The habitats were mapped using GIS against either OS maps or Aerial photographs. The NVC Saltmarsh layer was identified as most accurate of the three layers collated and therefore forms the base of the collation. All polygons extracted from the Phase 1 Intertidal Saltmarsh data that intersect with the NVC polygons were erased. Where 2 NVC survey overlap the most recently surveyed is taken as the most accurate. All polygons from the 1:50,000 OS map that intersect with either the NVC Saltmarsh layer or the extracted Phase 1 Intertidal Saltmarsh were also erased.

Dataset Reference Date (Publication): 2004-12-31

Temporal Extent

Begin date: 1994-01-01

End date: 2004-12-31

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=/

Extent

Geographic Extent: Wales (WLS)

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Format Type and Description

Geographic Information System Geographic Information System ()

Specification

[A] Mapinfo: Phase 2 quadrat data and polygons GIS

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: The structure of this data layer was updated in 2011 as part of a project to develop a series of priority and protected spatial marine habitat layers. The survey methodology used to collect this dataset either followed the National Vegetation Classification (NVC) Phase 2 methodology or intertidal Phase 1 methodology. The habitats were mapped using GIS against either OS maps or Aerial photographs. The NVC Saltmarsh layer was identified as most accurate of the three layers collated and therefore forms the base of the collation. All polygons extracted from the Phase 1 Intertidal Saltmarsh data that intersect with the NVC polygons were erased. Where 2 NVC survey overlap the most recently surveyed is taken as the most accurate. All polygons from the 1:50,000 OS map that intersect with either the NVC Saltmarsh layer or the extracted Phase 1 Intertidal Saltmarsh were also erased.

Keywords

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

Type: Theme

Citation

Date (Publication): 2008-06-01

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

Keywords

NRW Thesaurus

saltmarsh (salt-marsh) (salt marsh)
saltmarsh ecology
saltmarsh vegetation
habitat mapping
habitat management

Type: Theme

Citation

Date (Publication): 2023-12-31

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

Keywords

SeaDataNet Parameter Discovery Vocabulary

Habitat extent
Habitat characterisation

Type: Theme

Citation

Date (Revision): 2021-01-06

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

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

NRW Related Title: Priority Marine Habitats of Wales: Coastal Saltmarsh

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).

Use Constraints

Use constraints type: Other restrictions

Other constraints: © CNC/NRW and © Crown copyright 2004. Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313031383731 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2024-05-31T09:29:21.802Z

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.

Collated Saltmarsh Survey of Wales (1994 - 2004)

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

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