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

  • English
  • wel
  • All

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.

Identification

Dynodydd
Identifier
EXT_DS115861
Teitl Amgen
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 )
Laith Metadata
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
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2005-02-28
Perchennog
Owner
  Natural England
Foundry House, 3 Millsands, Riverside Exchange, Sheffield, S3 8NH
http://www.naturalengland.org.uk/
Cychwynnwr
Originator
  Emu Limited
Head Office, 1 Mill Court, Durley, Southampton, SO32 2EJ, England
http://www.emulimited.com/
Cychwynnwr
Originator
  English Nature
English Nature, Northminster House, Peterborough, PE1 1UA
http://www.english-nature.org.uk
Cychwynnwr
Originator
  Natural England
Foundry House, 3 Millsands, Riverside Exchange, Sheffield, S3 8NH
http://www.naturalengland.org.uk/
 

Extent

Extent

Hyd
Geographic Extent
CASNEWYDD - NEWPORT
Hyd
Geographic Extent
CAERDYDD - CARDIFF
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

benthic boundary layer
 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
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

Lleolwr Adnoddau
Resource Locator
View Metadata

World Wide Web page

 

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

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

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
  • habitat distribution
  • habitat classification
  • habitat assessment
  • habitat mapping
  • Severn Estuary pSAC, SPA
  • coastal geomorphology
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 extent
  • Habitat characterisation
  • Coastal geomorphology
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

 

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

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

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
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

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313135383631 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-05-31T09:23:45.704Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural England
Foundry House, 3 Millsands, Riverside Exchange, Sheffield, S3 8NH
http://www.naturalengland.org.uk/
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