Data'r arolwg salmonidau ifanc ar gyfer ACA afonydd
The Environment Agency monitors juvenile salmon and trout populations nationally by fishing a limited number of sites on an annual basis to obtain meaningful temporal data for trends in fish populations. A more comprehensive spatial monitoring survey programme is carried out every 5 years to investigate differences between groups of sites within particular river catchments. Other species caught in the surveys are also recorded e.g. bullhead, lampreys, eels etc. This dataset contains juvenile salmon data for the 8 rivers designated as Special Areas of Conservation (SAC) in Wales. The purpose of this dataset is to obtain temporal data for trends in fish populations and to investigate differences between groups of sites within river catchments.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS110240
- Teitl Amgen
-
- Laith Metadata
- English
- Datganiad
-
A limited number of sites are fished on an annual basis whilst a more comprehensive spatial monitoring survey programme is carried out every 5 years.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2007-12-31
Ystod amser
- Dyddiad cychwyn
- 1985-01-01
- Dyddiad gorffen
- 2007-12-31
- Categori pwnc
-
- Environment
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Documents
(
)
- Math
-
[A] Excel spreadsheets [B] MapInfo tables
-
Documents
(
)
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
-
A limited number of sites are fished on an annual basis whilst a more comprehensive spatial monitoring survey programme is carried out every 5 years.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- Atlantic salmon
- trout
- river Dee (afon Dyfrdwy)
- river Teifi (Afon Teifi)
- salmon (see also individual species)
- fish (fishes) (see also specific species)
- Special Areas of Conservation (SAC) - SAC monitoring
- salmo salar
- salmo trutta
- River Wye (Afon Gwy)
- river Gwyrfai (afon Gwyrfai)
- salmonidae
- rivers (see also specific river names)
- River Eden
- River Usk
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- river Cleddau
- river Tywi (afon Tywi)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
This dataset is wholly owned by Environment Agency. Enquirers are advised to obtain a copy from the owner/originator directly, rather than NRW. NRW may NOT publish or disseminate it in its entirety.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© Environment Agency NRW does NOT grant permission to third parties to re-use or disseminate this dataset.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313130323430 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-28T13:48:46.427Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0