Squirrel survey of Aberhirnant Forest and woodland surrounding Lake Vyrnwy (2001)
Presence or absence or red and grey squirrels in Aberhirnant Forest and the woodlands surrounding Lake Vyrnwy. This is a follow-up to the "Squirrel survey of Aberhirnant Forest and woodland surrounding Lake Vyrnwy 1999 - 2000". The purpose of this data capture is to inform work to remove grey squirrels in the area as well as gather further information about red squirrel populations. The survey locations were 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_DS102086
- Alternative Title
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- Squirrel Data - CCW - HQ Terr - Aberhirnant, Report 589 CCW0003800000007
- Arolwg ar wiwerod Aberhirnant a'r coetir o amgylch Llyn Efyrnwy (2001)
- Metadata Language
- English
- Lineage
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This is a follow up survey was commissioned by Countryside Council for Wales (CCW) in 2001 (the original survey was carried our between 1999 and 2000). 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. A subsequent survey in 2001 used 2 grids with 30 traps. Additional tube hair traps were also set. A total of 120 records were taken, of which 53 were positive. Grid references are estimated from map.
- Additional Information
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Mammal Ecologist, Terrestrial Science Group, NRW
- Dataset Reference Date (Publication)
- 2003-01-01
Temporal Extent
- Begin date
- 2001-07-25
- End date
- 2001-08-21
- Topic category
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- 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] Comprises of paper map and tables published in a summary report. [B] Raw data to be held in Recorder: Squirrel Data - CCW - HQ Terr - Aberhirnant, Report 589 CCW0003800000007 [C] Map of grid and row/trap locations to be held in Mapinfo table.
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Database
Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
This is a follow up survey was commissioned by Countryside Council for Wales (CCW) in 2001 (the original survey was carried our between 1999 and 2000). 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. A subsequent survey in 2001 used 2 grids with 30 traps. Additional tube hair traps were also set. A total of 120 records were taken, of which 53 were positive. Grid references are estimated from map.
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
- 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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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 2001 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
- 4f4c4942-4343-5764-6473-313032303836 XML
- Metadata Language
- English
- Parent Identifier
-
Squirrel Collation for Wales
NRW_DS102082
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:41:30.02Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0