Macrophyte Survey of Welsh Lakes 2014
Natural Resources Wales (NRW) commissioned ECUS Ltd to collect and present ecological data from twenty-five lakes, across eight local authority areas in Wales. The data was needed to support NRW’s integrated monitoring programme for; the Water Framework Directive (WFD); protected sites including Special Areas of Conservation SACs, Special Protection Areas (SPAs) and Site of Special Scientific Importance (SSSIs), as well as other legislative and policy drivers. The lakes surveyed were selected for a number of reasons: - SAC: Monitoring of a SAC feature (Natura 2000 Site) - SSSI: Monitoring of a Site of Special Scientific Interest feature; - WFD: Water Framework Directive surveillance network site - ND: Nitrates Directive Two notable species that were recorded during the surveys. Floating water-plantain Luronium natans, a European Protected Species, was recorded at seven lakes (Llyn Egnant, Llyn Gynon, Llyn Teifi, Llyn Cerrigllwydion Isaf, Gwnllyn, Llyn Padarn and Llyn Tegid). All of these are known locations for the species. Starry stonewort, Nitellopsis obtusa, is listed as Vulnerable on the UK Red List (JNCC, 2014). Starry stonewort was recorded at Llangorse Lake, making it only the second recorded site in Wales and a new record for this well-studied lake.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115898
- Alternative Title
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- Arolwg o Facroffytau Llynnoedd Cymru ar gyfer gwaith monitro’r Gyfarwyddeb Cynefinoedd a’r Gyfarwyddeb Fframwaith Dŵr (2014)
- Macrophyte Survey of Welsh Lakes for Habitats Directive and Water Framework Directive Monitoring, 2014
- Metadata Language
- English
- Lineage
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Aquatic macrophyte surveys were undertaken at all twenty five lakes, following the JNCC Common Standards Guidance / WFD Leafpacs2 Survey method. LEAFPACS metrics were calculated from the data. Depth profiles of temperature and dissolved oxygen were collected for a single point on each lake and observations on pressures impacting upon the lake were noted. Bathymetric surveys were completed on seven previously unsurveyed lakes and the data analysed using GIS software.
- Additional Information
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Baxter, E, and Stewart, N. (2015), Macrophyte Survey of Welsh Lakes for Habitats Directive and Water Framework Directive Monitoring, 2014, Natural Resources Wales, NRW Evidence Report No: 52, 78pp.
- Dataset Reference Date (Publication)
- 2015-03-31
Extent
Extent
- Geographic Extent
- POWYS - POWYS
- Geographic Extent
- SIR CEREDIGION - CEREDIGION
- Geographic Extent
- CONWY - CONWY
- Geographic Extent
- WRECSAM - WREXHAM
- Geographic Extent
- GWYNEDD - GWYNEDD
- Geographic Extent
- SIR YNYS MON - ISLE OF ANGLESEY
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Distribution
- Format Type and Description
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Documents
()
- Specification
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The data archive contains: [A] A full set of maps (25) of the macrophyte sector locations produced in PDF format. [B] A spreadsheet in Microsoft Excel format containing the grid references of the macrophyte survey locations. [C] A full set of LEAFPACS spreadsheets (25) in Microsoft Excel format. [D] A full set of images of the macrophyte sectors produced in JPEG format with an accompanying catalogue in Microsoft Excel format. [E] A spreadsheet in Microsoft Excel format containing the water quality depth profiles. [F] A series of GIS layers on which the bathymetry maps in the report are based. [G] A full set of maps (7) of the bathymetry survey produced in PDF format. [H] A confidential spreadsheet containing update landowner information. [I] The final report in Microsoft Word and Adobe PDF formats.
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Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Aquatic macrophyte surveys were undertaken at all twenty five lakes, following the JNCC Common Standards Guidance / WFD Leafpacs2 Survey method. LEAFPACS metrics were calculated from the data. Depth profiles of temperature and dissolved oxygen were collected for a single point on each lake and observations on pressures impacting upon the lake were noted. Bathymetric surveys were completed on seven previously unsurveyed lakes and the data analysed using GIS software.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- Llyn Maelog
- Llyn Idwal
- Llyn Idwal
- Llyn Tegid
- Llyn Conwy
- Llyn Padarn
- Llyn Gynon
- Llangorse Lake (llyn Safadden)
- Water Framework Directive (WFD)
- SSSI (Sites of Special Scientific Interest)
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
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
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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
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© CNC/NRW, 2015. 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
- 4f4c4942-4343-5764-6473-313135383938 XML
- Metadata Language
- English
- Parent Identifier
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Welsh Lakes Survey and Monitoring
NRW_DS123035
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:16:07.99Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0