Cwm Idwal Surveillance data
This dataset currently contains the first year's recorded data following the establishment of a long-term vegetation surveillance system at Cwm Idwal National Nature Reserve (NNR). An earlier programme of intensive surveillance was undertaken at Cwm Idwal during 1999-2004 in response to the long term exclusion of grazing. This current surveillance project involves the establishment of a new, less intensive surveillance programme based on just eleven of the original plots, which will be repeated at three year intervals. The dataset includes a summary of plot frequency data, summary statistics for each species/feature, digital photographs, general observations on the eleven plots and plot identification sketches. The purpose of this data capture was to inform large-scale restoration projects in other parts of the Welsh uplands and provide information on the effects of such management decisions for the restoration of upland sites.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS110470
- Alternative Title
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- Data Gwyliadwriaeth Cwm Idwal
- Metadata Language
- English
- Lineage
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This work was commissioned following an earlier programme of intensive surveillance between 1999 and 2004 (see separate metadata entry entitled 'Cwm Idwal vegetation change surveillance project 1999-2004'). A number of the original landscape photographs have also been replicated, whilst a further series of additional views have also been taken from new vantage-points. All photography employed a Digtial SLR camera of 6.0 megapixels resolution. Eleven plots from the 1999-2004 surveillance projects were chosen either because they were located in transitional zones between vegetation types or in localities where changes were expected or desired. The eleven plots employ the same quadrat locations as those originally used. Presence/absence of selected species were recorded as were occurrences of bare ground, exposed peat, rock, litter, sheep/goat droppings and any other notable feature using a standard recording card. The data from these cards were then entered into excel spreadsheets. At least two photographs were taken of each plot and one of every quadrat recorded. Differential GPS was used to records plot and quadrat positions.
- Dataset Reference Date (Publication)
- 2007-01-01
Temporal Extent
- Begin date
- 2006-01-01
- Topic category
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- Environment
- Biota
Extent
Extent
- Geographic Extent
- GWYNEDD - GWYNEDD
- Geographic Extent
- Wales (WLS)
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Distribution
- Format Type and Description
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Documents
()
- Specification
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The full data are available in digital form, results in terms of plot means of individual quadrats for groupings based on broad divisions are presented in the report. [A] Report- paper hardcopy, Word [B] Raw data in Excel on CCW upland ecologist hardrive and on CD in TSG Archives [C] Digital images
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Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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This work was commissioned following an earlier programme of intensive surveillance between 1999 and 2004 (see separate metadata entry entitled 'Cwm Idwal vegetation change surveillance project 1999-2004'). A number of the original landscape photographs have also been replicated, whilst a further series of additional views have also been taken from new vantage-points. All photography employed a Digtial SLR camera of 6.0 megapixels resolution. Eleven plots from the 1999-2004 surveillance projects were chosen either because they were located in transitional zones between vegetation types or in localities where changes were expected or desired. The eleven plots employ the same quadrat locations as those originally used. Presence/absence of selected species were recorded as were occurrences of bare ground, exposed peat, rock, litter, sheep/goat droppings and any other notable feature using a standard recording card. The data from these cards were then entered into excel spreadsheets. At least two photographs were taken of each plot and one of every quadrat recorded. Differential GPS was used to records plot and quadrat positions.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- Cwm Idwal
- Cwm Idwal NNR
- Eryri cSAC (Eryri SAC)
- Snowdonia (Eryri)
- sheep grazing
- surveillance
- vegetation surveys (vegetation monitoring)(see also biologicalsurveys)
- grazing pressure
- grazing exclusions
- vegetation composition
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Cwm Idwal surveillance
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 Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313130343730 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:38:45.743Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0