Special Area of Conservation (SAC) Monitoring: White Clawed Crayfish in River Wye SAC (2003)
The inclusion of the white-clawed crayfish on Annex II of the EU Habitats and Species Directive requires Countryside Council for Wales (CCW) to identify Special Areas of Conservation for the species and to ensure that Favourable Conservation Status (FCS) applies. The purpose of this data capture was to undertake monitoring of the white-clawed crayfish and its habitat on the River Wye candidate Special Area of Conservation (cSAC) in order to report on condition as part of the assessment of Favourable Conservation Status for Natura 2000 features.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS115577
- Teitl Amgen
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- Monitro'r Cimwch Crafanc Wen yn ACA Afon Gwy
- Laith Metadata
- English
- Datganiad
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Condition monitoring followed the Common Standards approach outlined by the Joint Nature Conservation Committee. Eight monitoring units (Afon Duhonw, Afon Edw, Afon Irfon, Afon Llynfi, Clyro Brook, Dulas Brook [Builth Wells], Nant yr Qffeiriad and Sgithwen Brook) were sampled following the protocol given by Peay (2002; see http://www.english-nature.org.uk/LIFEinUKRivers/monitoring.html ). A total of 16 x 500m stretches were selected randomly within each monitoring unit. Starting from the downstream end of the stretch, a 100m sampling site should be selected within each stretch which contains five suitable habitat patches measuring from 1 to 20m2. Within each habitat patch, 10 potential refuges (large cobble or boulder >15cm along longest axis) should be searched and the number of crayfish recorded. For each crayfish found, a number of attributes were recorded and a detailed record made of the physical attributes of all habitat patches sampled. The white-clawed crayfish is a proposed feature on the River Wye cSAC. Surveys in 1995 and 2002 have helped to determine its status and distribution, and identified the most important tributaries (Rogers and Holdich, 1995; Rogers and Watson, 2003), and this information has enabled the setting of provisional thresholds for condition assessment.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2003-10-31
Ystod amser
- Dyddiad cychwyn
- 2003-08-01
- Dyddiad gorffen
- 2003-10-31
- Categori pwnc
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- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
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Documents
Documents
()
- Math
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[A] The final report in Microsoft Word and Adobe PDF formats, individual Appendix's in Adobe PDF Format. [B] Data associated to each Appendix is held within Microsoft Excel Format [C] Maps associated to the report are in .GIF Format as well as each being on a Microsoft Word Document.
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Documents
Documents
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
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Condition monitoring followed the Common Standards approach outlined by the Joint Nature Conservation Committee. Eight monitoring units (Afon Duhonw, Afon Edw, Afon Irfon, Afon Llynfi, Clyro Brook, Dulas Brook [Builth Wells], Nant yr Qffeiriad and Sgithwen Brook) were sampled following the protocol given by Peay (2002; see http://www.english-nature.org.uk/LIFEinUKRivers/monitoring.html ). A total of 16 x 500m stretches were selected randomly within each monitoring unit. Starting from the downstream end of the stretch, a 100m sampling site should be selected within each stretch which contains five suitable habitat patches measuring from 1 to 20m2. Within each habitat patch, 10 potential refuges (large cobble or boulder >15cm along longest axis) should be searched and the number of crayfish recorded. For each crayfish found, a number of attributes were recorded and a detailed record made of the physical attributes of all habitat patches sampled. The white-clawed crayfish is a proposed feature on the River Wye cSAC. Surveys in 1995 and 2002 have helped to determine its status and distribution, and identified the most important tributaries (Rogers and Holdich, 1995; Rogers and Watson, 2003), and this information has enabled the setting of provisional thresholds for condition assessment.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
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- crayfish
- astacida (astacidae) (see also specific crayfish species)
- white-clawed crayfish
- austropotamobius pallipes
- Special Areas of Conservation (SAC) - SAC monitoring
- River Wye Tributaries
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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Assessment of the condition of the white clawed crayfish in the river Wye cSAC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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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
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313135353737 XML
- Laith Metadata
- English
- Dynodydd Rhiant
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Condition monitoring of Special Areas of Conservation (SACs) in Wales
NRW_DS110194
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:40:53.345Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0