Freshwater Macrophyte Survey Data

The habitat 'H3260 Water Courses of Plain to Submontane Levels with the Ranunculion fluitantis and Callitricho-batrachion Vegetation' (henceforth 'Ranunculion habitat') is listed in Annexe I of the EU Habitat Directive as a habitat of European Importance. Four rivers in Wales, the Afon Gwyrfai, Afon Teifi, River Dee and River Wye are considered of European importance for this habitat type. A gap analysis of available data has indicated that there is a shortage of recent information on macrophyte community composition and extent in the Teifi and Upper Wye catchments. Therefore, these catchments have formed the focus of this study and data has been collected and analysed from these areas to determine whether the performance indicators for macrophyte community composition and extent for these rivers pass the required standard for extent and quality. The primary aim of this project is to produce an assessment of the status of the plant community component of the Ranunculion habitat on the Rivers Wye and Teifi. This dataset comprises of a survey entered into Recorder 6 which have been packaged for dissemination onto the NBN Gateway. Confidence in this dataset is high, all survey work was undertaken by a team of two experienced macrophyte surveyors.

Identification

Identifier
NRW_DS115277
Alternative Title
  • Special Area of Conservation (SAC) Monitoring of Ranunculion Plant Community Attributes in mid Wales Rivers
  • Macrophyte Survey of mid Wales Rivers 2013- CCW Science Report 1034
  • River Wye and Afon Teifi Macrophyte Survey 2012
Metadata Language
English
Lineage

Field surveys were undertaken within the recognised macrophyte survey season (June-September inclusive). Survey was undertaken at low flows when visibility through the water column was good and timed to avoid the periods during and immediately following inclement weather conditions such as heavy rain which can affect the quality of macrophyte data collected. Field surveys followed the LEAFPACS methodology at each survey site. One hundred meter sections of river were surveyed according to this methodology by traversing the channel in a zigzag, recording plants present in all channel habitats that are inundated for >50 % of the year. Where the channel was very wide (>50 m) or deep (>1 m) and the central channel was devoid of vegetation or could not be accurately recorded due to turbidity or depth, a 5 m wide strip down either side was surveyed. Species were recorded according to the LEAFPACS species list, with voucher specimens taken where necessary to confirm identification. Each species recorded was assigned a cover score for the 100 m according to a nine point scale used in the MTR methodology.
Dataset Reference Date (Publication)
2016-08-17
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Ecus Ltd -
Brook Holt, 3 Blackburn Road, Sheffield, South Yorkshire, S61 2DW
http://www.ecusltd.co.uk/
 

Extent

Extent

Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

water column skin
 
 

Distribution

Distribution

Format Type and Description
  • Database ( )

    Specification

    [A] Report is held as a Word Document within Fynnon, [B] Data is held within excel spreadsheets [C] Pictures are held as .jpeg files [D] Species data is held in Recorder 6 Macrophyte Survey of Mid-Wales Rivers 2013- CCW Science Report 1034 No. CCW000800000000K. [E] This dataset is also available to download on the NBN Gateway - See Resource Locator

Resource Locator
View and Download Data

World Wide Web page

 

Quality

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

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

Field surveys were undertaken within the recognised macrophyte survey season (June-September inclusive). Survey was undertaken at low flows when visibility through the water column was good and timed to avoid the periods during and immediately following inclement weather conditions such as heavy rain which can affect the quality of macrophyte data collected. Field surveys followed the LEAFPACS methodology at each survey site. One hundred meter sections of river were surveyed according to this methodology by traversing the channel in a zigzag, recording plants present in all channel habitats that are inundated for >50 % of the year. Where the channel was very wide (>50 m) or deep (>1 m) and the central channel was devoid of vegetation or could not be accurately recorded due to turbidity or depth, a 5 m wide strip down either side was surveyed. Species were recorded according to the LEAFPACS species list, with voucher specimens taken where necessary to confirm identification. Each species recorded was assigned a cover score for the 100 m according to a nine point scale used in the MTR methodology.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • freshwater habitats
  • macrophyte surveys
  • NBN Atlas
  • River Wye Tributaries
  • river Teifi (Afon Teifi)
  • National Biodiversity Network [NBN]
  • macrophytes
Type
Theme

Citation

Date (Publication)
2026-03-04
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary
Type
Theme

Citation

Date (Publication)
2024-06-19
Code
geonetwork.thesaurus.external.theme.rdf+xml

Keywords

NRW SMNR Keywords
  • Animals, Plants and Other Organisms (SMNR)
  • Water Quality (SMNR)
  • Management Areas (SMNR)
  • Ecosystem (SMNR)
  • Freshwater and Wetlands (SMNR)
  • Sustainable Management of Natural Resources (SMNR)
Type
Theme

Citation

Date (Publication)
2024-06-26
Code
geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

 

Constraints

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 2013. 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

Metadata

File Identifier
4f4c4942-4343-5764-6473-313135323737 XML
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Species Data on the NBN Atlas

NRW_DS116805
Resource type
Dataset
Metadata Date
2026-06-26T07:32:31.312Z
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

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