Squirrel Survey of Aberhirnant Forest and Woodland surrounding Lake Vyrnwy (1999 - 2000)
This dataset is made up of presence or absence records for red and grey squirrels in Aberhirnant Forest and the woodlands surrounding Lake Vyrnwy. The purpose of this data capture was to report on the presence, distribution and likely status of red squirrels in Aberhirnant Forest and the Lake Vyrnwy area. The data is will be used as a basis to assess whether red squirrels have a future in this area, that is, sufficient potential to justify further monitoring and sympathetic forest management. The target sites included conifer plantations of Aberhirnant Forest and the catchment area of Lake Vyrnwy.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS100791
- Alternative Title
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- Squirrel Data - CCW - HQ Terr - Aberhirnant & Lake Vyrnwy, Report 241 CCW0003800000005
- Arolwg ar wiwerod Aberhirnant a'r coetir o amgylch Llyn Efyrnwy, 1999-2000
- Metadata Language
- English
- Lineage
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This original survey was carried our between 1999 and 2000. A follow up survey was commissioned by CCW in 2001. An initial survey of 17 grids of hair tubes were set out in Aberhirnant Forest and 2 in the Lake Vyrnwy Plantation in 1999. Each grid consisted of 20 hair tubes in four rows each of 5 tubes. Each row was 100 m apart and the tubes were 100 m apart in the rows. Tubes were fixed to trees and baited. These were then checked every two weeks and hairs deposited in the tubes were checked by eye and verified under a microscope using the negative staining technique where necessary. Grid references have been estimated from a map. A total of 1290 records were taken, of which 45 were positive.
- Additional Information
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Further information is available in the report "Red Squirrel Conservation: Report on the status of red and grey squirrels in the Aberhirnant Forest and woodlands surrounding Lake Vyrnwy FCRA Project 241 squirrel management in Woodlands."
- Dataset Reference Date (Publication)
- 2003-12-31
Temporal Extent
- Begin date
- 1999-11-23
- End date
- 2000-06-19
- Topic category
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- Environment
- Biota
Extent
Extent
- Geographic Extent
- POWYS - POWYS
- Geographic Extent
- GWYNEDD - GWYNEDD
))
Distribution
- Format Type and Description
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-
Database
Database
()
- Specification
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[A] Raw data to be held in Recorder 6 - Squirrel Data - CCW - HQ Terr - Aberhirnant & Lake Vyrnwy, Report 241 CCW0003800000005 [B] Map of grid and row/trap locations to be held in Mapinfo table [C] Comprises of paper map and tables published in a summary report [D] Species data is also available to download on the NBN Gateway - See Resource Locator
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Database
Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
This original survey was carried our between 1999 and 2000. A follow up survey was commissioned by CCW in 2001. An initial survey of 17 grids of hair tubes were set out in Aberhirnant Forest and 2 in the Lake Vyrnwy Plantation in 1999. Each grid consisted of 20 hair tubes in four rows each of 5 tubes. Each row was 100 m apart and the tubes were 100 m apart in the rows. Tubes were fixed to trees and baited. These were then checked every two weeks and hairs deposited in the tubes were checked by eye and verified under a microscope using the negative staining technique where necessary. Grid references have been estimated from a map. A total of 1290 records were taken, of which 45 were positive.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- red squirrels
- sciurus vulgaris
- grey squirrels
- sciurus carolinensis
- squirrels (see also specific species)
- sciuridae
- Aberhirnant Forest
- vyrnwy
- 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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Aberhirnant red squirrel survey : second phase, summer 2001
- NRW Related Title
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Squirrel Collation for Wales
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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This data is comprised of a mixture of third party owned records and NRW records. NRW policy permits access to and release of this data under the same terms as its own data. There are no access restrictions on 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 and various third party recorders NRW owns the copyright of the collation, but the ownership of the records themselves rests with the originator. 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
- 4f4c4942-4343-5764-6473-313030373931 XML
- Metadata Language
- English
- Parent Identifier
-
Squirrel Collation for Wales
NRW_DS102082
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:41:09.615Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0