Cysylltedd CuRVe: Addasiadau i Afonydd
This dataset provides a measure of resilience associated with river connectivity by assessing the extent of physical modifications and hard engineering affecting river systems within each reporting square. The resilience values are derived from information on modified water bodies and known artificial barriers that may reduce the ability of rivers to function as ecological corridors. The dataset combines evidence from Water Framework Directive (WFD) assessments and a national dataset of hydropower opportunities to produce a relative resilience score ranging from 0 to 100, where lower scores indicate a greater potential impact on river connectivity.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS124784
- Laith Metadata
- English
- Datganiad
-
The dataset was produced using two primary data sources: Water Framework Directive (WFD) waterbody assessments and the DEFRA hydropower opportunities dataset.
River waterbody catchments identified within the WFD Reasons for Not Achieving Good Status (RNAG) dataset as having confirmed or probable physical modifications were classified as affected by hard engineering and assigned a low resilience value. Catchments identified as Heavily Modified Water Bodies (HMWBs) were also included in this category. This created an initial binary assessment, assigning a resilience value of 0 to modified catchments and 100 to catchments with no recorded physical modification.
As this approach was considered insufficiently representative of local conditions, particularly where downstream barriers influenced the status of upstream catchments, a second analysis was undertaken using the DEFRA hydropower opportunities dataset. Known locations of artificial barriers, such as weirs, were extracted and assessed according to their ecological sensitivity classification. Barriers classified as having high ecological sensitivity were assigned a score of 3, moderate sensitivity a score of 2, and low sensitivity a score of 1. Scores for all barriers within each reporting square were summed to generate a cumulative risk score.
The resulting risk scores were inverted and normalised to a relative scale of 0 to 100 to generate resilience values, with higher values representing lower levels of connectivity pressure from artificial barriers. The resilience values derived from the WFD physical modification assessment and the DEFRA barrier analysis were then averaged to produce the final river connectivity resilience score for each reporting square.
Full details of the methodology are provided in the associated project documentation and technical report.
- Gwybodaeth ychwanegol
-
Naumann, E.-K., Medcalf, K., 2020. Current relative value (CuRVe) map atlas for ecosystem resilience in Wales. NRW Natural Resources Wales report series, Report No: 415, 88pp, Publisher, Place of publication.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2020-04-27
Ystod amser
- Dyddiad cychwyn
- 2020-03-01
- Dyddiad gorffen
- 2020-04-27
- Categori pwnc
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- Environment
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
(
)
- Math
-
Arcmap feature class
-
Geographic Information System
(
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- 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
- Eglurhad
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
-
The dataset was produced using two primary data sources: Water Framework Directive (WFD) waterbody assessments and the DEFRA hydropower opportunities dataset.
River waterbody catchments identified within the WFD Reasons for Not Achieving Good Status (RNAG) dataset as having confirmed or probable physical modifications were classified as affected by hard engineering and assigned a low resilience value. Catchments identified as Heavily Modified Water Bodies (HMWBs) were also included in this category. This created an initial binary assessment, assigning a resilience value of 0 to modified catchments and 100 to catchments with no recorded physical modification.
As this approach was considered insufficiently representative of local conditions, particularly where downstream barriers influenced the status of upstream catchments, a second analysis was undertaken using the DEFRA hydropower opportunities dataset. Known locations of artificial barriers, such as weirs, were extracted and assessed according to their ecological sensitivity classification. Barriers classified as having high ecological sensitivity were assigned a score of 3, moderate sensitivity a score of 2, and low sensitivity a score of 1. Scores for all barriers within each reporting square were summed to generate a cumulative risk score.
The resulting risk scores were inverted and normalised to a relative scale of 0 to 100 to generate resilience values, with higher values representing lower levels of connectivity pressure from artificial barriers. The resilience values derived from the WFD physical modification assessment and the DEFRA barrier analysis were then averaged to produce the final river connectivity resilience score for each reporting square.
Full details of the methodology are provided in the associated project documentation and technical report.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- ecological connectivity
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
Allweddair
-
IPSV Subjects List
-
- Biodiversity
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2020-11-18
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
Current Relative Value (CuRVe) Map Atlas for Ecosystem Resilience in Wales
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© 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.
Datganiad Priodoli
- Cyfyngiadau eraill
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right. Contains data supplied by Natural Environment Research Council.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313234373834 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Current Relative Value of ecosystem resilience (CuRVe)
NRW_DS124799
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-10-08T14:34:12.585Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0