Special Area of Conservation (SAC) Monitoring: Shad Egg Survey on the River Usk (2013 - 2018)
This report assesses the spawning extent population attribute of Allis and Twaite shad on the River Usk Special Area of Conservation (SAC), using a kick sampling monitoring method for shad eggs at routine sampling points using an Natural Resources Wales (NRW) standard protocol (Garrett, 2015) during the months of May - June in 2013, 2015 and 2016. This is one of the population attributes for condition assessment from the Common Standards Monitoring (CSM) guidance for freshwater features (Joint Nature Conservation Committee (JNCC), 2015). The two remaining population attributes are never assessed by NRW because of the invasive techniques for sampling juvenile and adult life stages of these two species. The environmental attribute targets for water quality, flow, river habitat etc will be assessed when sufficient data has been collated and is available. Overall the shad spawning distribution target was not met on the River Usk SAC in the third reporting cycle. This preliminary assessment is classed as a Fail. For freshwater species and habitats the overall assessment of the feature as 'Favourable' or 'Unfavourable' (JNCC, 2017) incorporates both abiotic and biotic attributes. This overall assessment will be made when in addition to the population attributes, the environmental attributes (water quality, flow, river habitat, barriers to migration etc.) for the SAC river have also been assessed. This analysis will be documented in a summary table for each SAC river and each of its features.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS119181
- Alternative Title
-
- Monitro Ardaloedd Cadwraeth Arbennig (ACA): Arolwg o Wyau Gwangod ar yr Afon Wysg (2013 – 2018)
- Metadata Language
- English
- Lineage
-
Data is collected according to Joint Nature Conservation Committee (JNCC) published guidance on Common Standards Monitoring for Freshwater Fauna (JNCC, 2015). The distribution of spawning shad within each river catchments are assessed using a kick sampling technique for eggs conducted in the spring.
- Additional Information
-
Garrett, HM., (2017), River Usk SAC Allis & Twaite shad population condition assessment, Reporting cycle 2013 to 2018, 23 pp., Natural Resources Wales, Dolgellau. Unpub.
- Dataset Reference Date (Publication)
- 2017-08-31
Temporal Extent
- Begin date
- 2012-01-01
- End date
- 2018-12-31
- Topic category
-
- Biota
- Inland waters
Extent
Extent
- Geographic Extent
- SIR FYNWY - MONMOUTHSHIRE
- Geographic Extent
- CAERDYDD - CARDIFF
- Geographic Extent
- TOR-FAEN - TORFAEN
- Geographic Extent
- SIR GAERFYRDDIN - CARMARTHENSHIRE
- Geographic Extent
- RHONDDA CYNON TAF - RHONDDA CYNON TAFF
- Geographic Extent
- POWYS - POWYS
- Geographic Extent
- PEN-Y-BONT AR OGWR - BRIDGEND
- Geographic Extent
- MERTHYR TUDFUL - MERTHYR TYDFIL
- Geographic Extent
- CASTELL-NEDD PORT TALBOT - NEATH PORT TALBOT
- Geographic Extent
- CASNEWYDD - NEWPORT
- Geographic Extent
- CAERFFILI - CAERPHILL
- Geographic Extent
- BRO MORGANNWG - THE VALE OF GLAMORGAN
- Geographic Extent
- BLAENAU GWENT - BLAENAU GWENT
- Geographic Extent
- ABERTAWE - SWANSEA
))
Distribution
- Format Type and Description
-
-
Delimited
Delimited
()
- Specification
-
Microsoft Excel Table .XLSX format [Workbook Usk shad cycle 3 2013 onwards.xlsx]
-
Delimited
Delimited
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
Data is collected according to Joint Nature Conservation Committee (JNCC) published guidance on Common Standards Monitoring for Freshwater Fauna (JNCC, 2015). The distribution of spawning shad within each river catchments are assessed using a kick sampling technique for eggs conducted in the spring.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- protected sites
- protected areas
- allis shad
- alosa alosa
- twaite shad
- alosa fallax
- Special Areas of Conservation (SAC) - SAC monitoring
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- monitoring (see specific types of monitoring eg. woodland monitoring)
- freshwater (fresh water, open water) (see also freshwater ecology) (see also inland waters,rivers,lakes)
- 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
-
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
-
© 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
- 4f4c4942-4343-5764-6473-313139313831 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:22:42.542Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0