Phase 1 Intertidal Biotope Mapping for Severn Estuary 2002 - 2004 (3rd Party Data)

This is a 3rd party spatial dataset for Phase 1 intertidal biotope data for the English side of the Severn Estuary as an addition to the Welsh side which was completed by Countryside Council for Wales. The Severn Estuary has long been regarded as a site of international natural heritage importance but managing the wide variety of significant wildlife interests against a background of increasing human pressures represents huge challenges for the UK statutory conservation agencies. The study aim was to provide a powerful management GIS tool to support decision making processes and allow rapid assessments of the effects of human activities on local intertidal ecological features. The project involved the construct a Geographical Information System (GIS) database populated with Phase I level intertidal biotope data for the entire Severn Estuary site (English side). The study aim was to provide a powerful management GIS tool to support decision making processes and allow rapid assessments of the effects of human activities on local intertidal ecological features. The objectives of the study are summarised below: - Conduct Phase I mapping field surveys to classify and map (at 1:5000 scale) intertidal biotopes along the English side of the Severn Estuary possible Special Area of Conservation (pSAC) including Bridgwater Bay Special Protection Area (SPA). - Present a consistent biotope dataset for intertidal areas throughout the site and to compliment similar previous mapping work of sub-tidal environments (Posford Duvivier) and saltmarshes (Dargie, 1998). - Construct a Geographical Information System (GIS) database present a report giving a descriptive account of the site, highlighting significant habitats and species, and providing an interpretation of observations. - Present a report giving a descriptive account of the site, highlighting significant habitats and species, and providing an interpretation of observations.

Identifier: EXT_DS115861

Alternative Title

Phase 1 Intertidal data - third party Severn Estuary
Gwaith mapio biotopau rhynglanwol Cam 1 ar gyfer Aber Afon Hafren - Data Trydydd Parti ( 2002 - 2004 )

Metadata Language: English

Lineage: A total of 57 intertidal biotopes were classified and mapped during the study. Biotope classification was based on the v97.06 system. It has been recognised that one of the most efficient methods of ecological data acquisition and dissemination is biotope mapping and the construction of biotope maps. Biotope mapping is a well-established survey technique enabling the rapid field collection of ecological data over very large areas, such as the Severn Estuary. Data drawn from the field surveys are presented as biotope maps which show the geographical extents and variety of habitats and their component species (biotopes) within a given area. In conjunction with expert opinion, biotope maps and accompanying survey reports can be used to assess the likely ecological effects of proposed activities and the possible consequences for nationally and internationally significant ecological features. Of particular note was the very extensive honeycomb worm, Sabellaria alveolata, reefs (classified as MLR.Salv), which is noted as scarce in the UK. In some places, this biotope dominated lower eulittoral and sub-littoral fringe rock and consolidated gravel/cobble substrata. Important locations for intertidal S. alveolata reefs included Wains Hill, Ladye Point, Anchor Head, English Stones, Steep Holm Island and Stert Flats in Bridgwater Bay. In comparison to other Sabellaria reef habitats within the UK, the associated fauna of Severn Estuary S. alveolata intertidal reef habitat is likely to be very impoverished due to the high sediment loading, high current speeds and related scouring effects.

Additional Information: Severn Estuary Intertidal biotope mapping, Baseline Phase 1 Study. Draft Final Report February 2005. Report No. 04/J/1/03/0452/0466

Dataset Reference Date (Publication): 2005-02-28

Owner

Natural England

Foundry House, 3 Millsands, Riverside Exchange, Sheffield, S3 8NH

http://www.naturalengland.org.uk/

Originator

Emu Limited

Head Office, 1 Mill Court, Durley, Southampton, SO32 2EJ, England

http://www.emulimited.com/

Originator

English Nature

English Nature, Northminster House, Peterborough, PE1 1UA

http://www.english-nature.org.uk

Originator

Natural England

Foundry House, 3 Millsands, Riverside Exchange, Sheffield, S3 8NH

http://www.naturalengland.org.uk/

Extent

Geographic Extent: CASNEWYDD - NEWPORT

Geographic Extent: CAERDYDD - CARDIFF

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Distribution

Format Type and Description

Documents ()

Specification

[A] Data. Map Info Biotope data, photo target data and target note data. [B] Report. Draft Final Report in .pdf format. [C] Severn Photos 392 .jpg photos of survey locations and areas of interest within the survey. [D] Target_Notes_RTF 461 Target Notes in Word .rft format

Resource Locator

View Metadata

World Wide Web page

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: A total of 57 intertidal biotopes were classified and mapped during the study. Biotope classification was based on the v97.06 system. It has been recognised that one of the most efficient methods of ecological data acquisition and dissemination is biotope mapping and the construction of biotope maps. Biotope mapping is a well-established survey technique enabling the rapid field collection of ecological data over very large areas, such as the Severn Estuary. Data drawn from the field surveys are presented as biotope maps which show the geographical extents and variety of habitats and their component species (biotopes) within a given area. In conjunction with expert opinion, biotope maps and accompanying survey reports can be used to assess the likely ecological effects of proposed activities and the possible consequences for nationally and internationally significant ecological features. Of particular note was the very extensive honeycomb worm, Sabellaria alveolata, reefs (classified as MLR.Salv), which is noted as scarce in the UK. In some places, this biotope dominated lower eulittoral and sub-littoral fringe rock and consolidated gravel/cobble substrata. Important locations for intertidal S. alveolata reefs included Wains Hill, Ladye Point, Anchor Head, English Stones, Steep Holm Island and Stert Flats in Bridgwater Bay. In comparison to other Sabellaria reef habitats within the UK, the associated fauna of Severn Estuary S. alveolata intertidal reef habitat is likely to be very impoverished due to the high sediment loading, high current speeds and related scouring effects.

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

habitat distribution
habitat classification
habitat assessment
habitat mapping
Severn Estuary pSAC, SPA
coastal geomorphology

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
Coastal geomorphology

Type: Theme

Citation

Date (Revision): 2021-01-06

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

Code: Latitude and Longitude (EPSG::4326)

Content Information

NRW Profile

Custom Elements

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: This dataset is wholly owned by Natural England. NRW may provide access to this dataset on request in some circumstances. However, enquirers are advised to obtain a copy from the owner/originator directly, rather than NRW. NRW may NOT publish or disseminate it in its entirety.

Use Constraints

Use constraints type: Other restrictions

Other constraints: © Natural England, 2015. NRW does NOT grant permission to third parties to re-use or disseminate this dataset. Those seeking such permission should approach the originator directly.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313135383631 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2024-05-31T09:23:45.704Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural England

Foundry House, 3 Millsands, Riverside Exchange, Sheffield, S3 8NH

http://www.naturalengland.org.uk/

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.

Phase 1 Intertidal Biotope Mapping for Severn Estuary 2002 - 2004 (3rd Party Data)

Identification

Extent

Extent

Vertical Extent

Distribution

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