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.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS115277
- Teitl Amgen
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- 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
- Laith Metadata
- English
- Datganiad
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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.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2016-08-17
Ystod amser
- Dyddiad cychwyn
- 2012-09-06
- Dyddiad gorffen
- 2012-09-19
- Categori pwnc
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- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
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water column skin
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
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-
Database
Database
()
- Math
-
[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
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Database
Database
()
- Lleolwr Adnoddau
-
View and Download Data
World Wide Web page
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
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.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
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- macrophyte surveys
- macrophytes
- freshwater habitats
- River Wye Tributaries
- river Teifi (Afon Teifi)
- NBN Atlas
- National Biodiversity Network [NBN]
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
Allweddair
- SeaDataNet Parameter Discovery Vocabulary
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- Habitat characterisation
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2021-01-06
Allweddair
-
NRW SMNR Vocabulary
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- Freshwater and Wetlands (SMNR)
- Ecosystem (SMNR)
- Management Areas (SMNR)
- Water Quality (SMNR)
- Animals, Plants and Other Organisms (SMNR)
- Sustainable Management of Natural Resources (SMNR)
- Natural Resources (incl. Features and Processes) (SMNR)
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2023-12-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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© 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
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313135323737 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Natural Resources Wales (NRW) Species Data on the NBN Atlas
NRW_DS116805
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:39:02.554Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0