Modelu maetholion ar gyfer Llyn Llan-gors
Llangorse Lake is the largest natural eutrophic lake in Wales and has been designated as a Site of Special Scientific Interest (SSSI) and a Special Area of Conservation (SAC). The lake has a history of eutrophication and so it was decided to undertake a nutrient modelling and nutrient budget exercise to determine the size and sources of nutrient loads entering the lake. Llangorse Lake has a history of eutrophication problems believed to have been caused by high nutrient loads entering the lake from the surrounding catchment. This study aimed to determine the size and main sources of those loads. Specific objectives include: - To review existing data and information on the water quality of Llangorse Lake. - To conduct a field study to investigate the nutrient budget of the lake. - To model the nutrient delivery from the catchment to the lake, with particular focus on phosphorus delivery, to give an indication of source apportionment. - To prepare a draft catchment management plan.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS110067
- Teitl Amgen
-
- Laith Metadata
- English
- Datganiad
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The nutrient load to the lake was estimated from nutrient concentrations and flows measured on the inflow streams. Nutrient concentrations were also measured in the outflow to provide an indication of lake water quality. The 8 monitoring sites were chosen to include the main drainage channels into and out of the lake and with sampling points located as close to the lake as practically possible. Water and flow sampling was conducted at fortnightly intervals for one year. Hydraulic load to the lake was calculated as were nutrient concentration in the lake inflows- specifically phosphorous and nitrate. Phosphorous concentrations in the sediments were collected and analysed.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2008-12-31
Ystod amser
- Dyddiad cychwyn
- 2006-10-10
- Dyddiad gorffen
- 2007-09-25
- Categori pwnc
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- Environment
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
- Fformat - Math a Disgrifiad
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-
Documents
(
)
- Math
-
Report in Word and PDF format Electronic versions of the figures contained in the report in *.tif format Data collected in excel spreadsheets
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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
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
-
The nutrient load to the lake was estimated from nutrient concentrations and flows measured on the inflow streams. Nutrient concentrations were also measured in the outflow to provide an indication of lake water quality. The 8 monitoring sites were chosen to include the main drainage channels into and out of the lake and with sampling points located as close to the lake as practically possible. Water and flow sampling was conducted at fortnightly intervals for one year. Hydraulic load to the lake was calculated as were nutrient concentration in the lake inflows- specifically phosphorous and nitrate. Phosphorous concentrations in the sediments were collected and analysed.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
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- nutrient budget
- Lakes (Limnology)
- SSSI (Sites of Special Scientific Interest)
- Marine & Freshwater Science Group (MFSG)
- nutrient load
- nutrients
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- Llangorse Lake (llyn Safadden)
- nitrates (nitrogen)
- eutrophication
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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Nutrient modelling and a nutrient budget for Llangorse Lake
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
- 4f4c4942-4343-5764-6473-313130303637 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-28T13:29:19.924Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0