A survey and assessment of the saproxylic invertebrate fauna of Gregynog National Nature Reserve, Powys - 2022
The Gregynog Hall Estate comprises approximately 300 hectares of ancient wood pasture habitat within the historic county of Montgomeryshire. Great Wood, a 15-hectare woodland within the estate, was designated as a Site of Special Scientific Interest (SSSI) in 1978 for its rich epiphytic lichen communities and was subsequently recognised as being of significant importance for saproxylic invertebrates associated with veteran trees and decaying wood habitats. The SSSI was extended in 2011, and the wider estate was designated a National Nature Reserve (NNR) in 2012. Natural Resources Wales commissioned a survey in 2022 to establish a baseline inventory of the saproxylic invertebrate fauna of the NNR and to assess its current condition. The survey recorded a diverse saproxylic assemblage and provides an important baseline for future monitoring, conservation management and the identification of potential threats to these woodland habitats and their associated species.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS125448
- Metadata Language
- English
- Lineage
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Survey work was undertaken at Gregynog Hall National Nature Reserve between April and November 2022 to establish a baseline assessment of the saproxylic invertebrate fauna. Fieldwork comprised a series of survey visits timed to sample species active during late spring, summer and autumn. Flight interception traps were deployed and maintained throughout the survey period, supplemented by targeted field surveys.
Survey methods included visual inspection of vegetation and decaying wood habitats; targeted and general sweep-netting; hand-searching of woody debris and other microhabitats; beating of foliage, branches and flowering shrubs; and the use of flight interception traps. Where possible, specimens were identified in the field. Voucher specimens of critical or difficult taxa were retained for verification, while selected larvae were reared to adulthood to enable reliable identification. Additional specimens were examined under laboratory conditions using microscopy. The resulting records were compiled to provide a baseline inventory of saproxylic invertebrates and to inform future conservation management of the National Nature Reserve.
- Additional Information
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Alexander, K.N.A. 2023. A survey and assessment of the saproxylic invertebrate fauna of Gregynog National Nature Reserve, Powys in 2022. NRW Evidence Report No. 671. 61pp. Natural Resources Wales, Bangor.
- Dataset Reference Date (Publication)
- 2023-02-01
Temporal Extent
- Begin date
- 2022-04-23
- End date
- 2022-11-19
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- POWYS - POWYS
))
Distribution
Distribution
- Format Type and Description
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Database
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Unknown
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- Specification
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Species records: Recorder 6
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Documents
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Unknown
)
- Specification
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Report in pdf format
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Database
(
Unknown
)
Quality
Data quality
- Quality Scope
- Dataset
- Conformity
- Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Explanation
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
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Survey work was undertaken at Gregynog Hall National Nature Reserve between April and November 2022 to establish a baseline assessment of the saproxylic invertebrate fauna. Fieldwork comprised a series of survey visits timed to sample species active during late spring, summer and autumn. Flight interception traps were deployed and maintained throughout the survey period, supplemented by targeted field surveys.
Survey methods included visual inspection of vegetation and decaying wood habitats; targeted and general sweep-netting; hand-searching of woody debris and other microhabitats; beating of foliage, branches and flowering shrubs; and the use of flight interception traps. Where possible, specimens were identified in the field. Voucher specimens of critical or difficult taxa were retained for verification, while selected larvae were reared to adulthood to enable reliable identification. Additional specimens were examined under laboratory conditions using microscopy. The resulting records were compiled to provide a baseline inventory of saproxylic invertebrates and to inform future conservation management of the National Nature Reserve.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- saproxylic invertebrate fauna
- diptera
- Gregynog National Nature Reserve
- saproxylic beetle
- blackflies
- Type
- Theme
Citation
- Date (Publication)
- 2026-08-27
Spatial Reference System
- Code
- NONE
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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A Survey and Assessment of the Saproxylic Invertebrate Fauna of Gregynog National Nature Reserve, Powys in 2022
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 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 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.
Attribution Statement
- Other constraints
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313235343438 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-09-29T15:44:04.399Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0