KiECO Ecoleg Dŵr Croyw Macro-infertebratau Llynnoedd
Defnyddir macroinfertebrata dŵr croyw fel dangosydd o ansawdd dŵr a gofynion llif y Llyn oherwydd eu disymudedd a'u helaethrwydd cymharol. Mae’r set ddata hon yn cynnwys gwybodaeth am safle, sampl, metrigau a thacsonau o arolygon macroinfertebrata llynnoedd dŵr croyw a gynhaliwyd ledled Cymru gan Cyfoeth Naturiol Cymru ac Asiantaeth yr Amgylchedd Cymru gynt ers 1997 ac ymlaen. Cynhelir yr arolygon hyn fel rhan o waith monitro parhaus o ansawdd dŵr llynnoedd ar gyfer gofynion deddfwriaethol ac i fodloni ysgogwyr busnes.
Cesglir data infertebratau llynnoedd gan ddefnyddio gwahanol ddulliau samplu. Mae samplau cic creaduriaid infertebratau llyn yn defnyddio'r un dechneg tair munud ag mewn afonydd ac fe'u defnyddir fel rhan o'r broses y Gyfarwyddeb Fframwaith Dŵr i asesu asideiddio mewn llynnoedd. Techneg Cironomid Exuviae (CPET) sy’n asesu poblogaeth Cironomidau yn y llyn i helpu i asesu maetholion ac amodau pH yn y corff dŵr.
Defnyddir methodoleg gaeth wrth samplu am facroinfertebratau llyn. Mae rhwydwaith craidd o safleoedd sy'n cael eu monitro ar raglen dreigl tair blynedd. Mae'r safleoedd hyn wedi'u lleoli lle mae asesiad risg wedi dangos risg sylweddol o fethiant safonau ansawdd ecolegol y Gyfarwyddeb Fframwaith Dŵr. Yn ogystal, gellir samplu safleoedd ar gyfer gwaith ymchwiliol neu ar sail ad hoc. Mae ardaloedd samplu wedi'u lleoli gydag ardal arolwg fwy ac mae'n rhaid iddynt fod yn gynrychioliadol o'r ardal arolwg gyffredinol. Unwaith y bydd samplau wedi'u casglu, byddant yn cael eu hanfon at labordai ecoleg CNC i'w hadnabod gan ddefnyddio methodolegau safonol, gan ddefnyddio gweithdrefn Rheoli Ansawdd Dadansoddol llym.
Unwaith y bydd y data wedi'i goladu yn y gronfa ddata ganolog, mae wedi'i echdynnu a'i sicrhau cyn ei gyhoeddi. Mae'n bwysig nodi y bydd y set ddata hon yn cynnwys rhai digwyddiadau samplu o'r misoedd diwethaf lle mae samplu wedi'i wneud ond nad yw dadansoddiad labordy wedi'i gwblhau, felly ni fydd y cyflenwad llawn o dacsonau ar gyfer y digwyddiad samplu hwnnw'n cael ei lanlwytho eto. Bydd y cofnodion hyn yn cael eu cwblhau wrth lanlwytho data yn y dyfodol o CNC i Atlas y Rhwydwaith Bioamrywiaeth Cenedlaethol. Mae'r set ddata hon hefyd yn cynnwys cofnodion ar gyfer rhai rhywogaethau nad ydynt yn macroinfertebratau, megis adar a physgod, a welwyd neu a gasglwyd yn ystod y samplu. Cafodd unrhyw organebau nad oeddent yn darged a gasglwyd yn ystod y samplu eu dychwelyd ar unwaith i'r llyn.
Golygiadau
Mae rhywfaint o wybodaeth wedi’i golygu i sicrhau bod y data ar gael yn agored. Mae hyn yn cynnwys:
Data trydydd parti
Data a gasglwyd ar gyfer ymchwiliadau parhaus
Arolygon wedi’u canslo neu heb eu cwblhau
Lleoliad rhywogaethau a warchodir lle gallai rhyddhau manylion eu lleoliad gael effaith andwyol ee misglod perlog yr afon.
Amlder Diweddaru
Mae'r data hwn yn cael ei ddiweddaru'n barhaus. Cymerir samplau CPET rhwng mis Ebrill a mis Hydref (4 sampl wedi'u gwasgaru'n gyfartal) a chymerir samplau cic ar y llyn yn y gwanwyn yn unig (Mawrth-Mai). Yn aml, nid yw data o dymhorau arolygon yn cael eu mewnbynnu ar adeg eu cipio a gall fod sawl mis cyn iddo gael ei roi yn y system. Mae’r set ddata allanol yn cael ei diweddaru yn fisol i gynnwys data newydd, a gall hefyd gynnwys cywiriadau i ddata a gyhoeddwyd yn flaenorol oherwydd gwaith sicrhau ansawdd.
Rhybuddion Gwybodaeth
Gwnawn ein gorau i osgoi problemau ansawdd data, ond gan fod y setiau data hyn yn adlewyrchu’r data sydd gennym, gallant gynnwys gwallau.
Darperir y data fel set o dablau data cysylltiedig oherwydd maint a strwythur y data. Tybir bod dealltwriaeth sylfaenol o ecoleg a data perthynol yn bodoli.
Nid yw data sy'n ymwneud ag ymchwiliadau i achosion o lygredd neu wybodaeth am rywogaethau a warchodir yn cael ei ryddhau oherwydd gallai gwybodaeth am leoliad y safleoedd hyn fod yn niweidiol i ymchwiliadau parhaus neu warchod rhywogaethau.
Nid oes gan bob safle ddata sylfaen amgylcheddol wedi'i restru.
Datganiad priodoli
Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS161277
- Teitl Amgen
-
- KiEco Freshwater Lake Macro-invertebrates Taxa.lyr
- KiEco Freshwater Lake Macro-invertebrates Site Detail.lyr
- KiEco Freshwater Lake Macro-invertebrates Sample Metric.lyr
- Freshwater Lake Macroinvertebrates
- Laith Metadata
- English
- Datganiad
-
Lake invertebrate data is collected using different sampling methods. Lake invertebrate kick samples use the same 3-minute technique as in rivers and are used as part of the WFD process to assess acidification within lakes. Chironomid Exuviae Technique (CPET) which assesses the population of Chironomids within the lake to help assess nutrient and pH conditions within the waterbody.
A strict methodology is applied when sampling for freshwater Lake macroinvertebrates. There is a core network of sites which are monitored on a three-yearly rolling programme. These sites are located where risk assessment has shown significant risk of failure of WFD ecological quality standards. In addition sites may be sampled for investigative work, or on an ad hoc basis. Sampling areas are located with a larger survey area and must be representative of the overall survey area. Once samples are collected they are sent NRW ecology laboratories for identification using standard methodologies, employing a strict Analytical Quality Control (AQC) procedure.
Once the data is collated in the central database, it has then been extracted and QA'd before being published. It is important to note that this dataset will include some sampling events from recent months where sampling has been undertaken but laboratory analysis has not been completed, therefore the full complement of taxa for that sampling event will not yet be uploaded. These records will be completed in future data uploads from NRW to the NBN Atlas. This dataset also includes records for some non-macroinvertebrate species, such as birds and fish, that were either observed or collected during sampling. Any non-target organisms collected during sampling were immediately returned to the Lake.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2025-05-06
Ystod amser
- Dyddiad cychwyn
- 1997-01-01
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographical Information System
(
)
- Math
-
ESRI Feature Class
-
Delimited
(
)
- Math
-
Original data held on Wiski-Kieco database
-
Geographical Information System
(
)
- Lleolwr Adnoddau
- Download and View Service ( WWW:LINK-1.0-http--link )
- Lleolwr Adnoddau
- WMS ( OGC:WMS )
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
-
Lake invertebrate data is collected using different sampling methods. Lake invertebrate kick samples use the same 3-minute technique as in rivers and are used as part of the WFD process to assess acidification within lakes. Chironomid Exuviae Technique (CPET) which assesses the population of Chironomids within the lake to help assess nutrient and pH conditions within the waterbody.
A strict methodology is applied when sampling for freshwater Lake macroinvertebrates. There is a core network of sites which are monitored on a three-yearly rolling programme. These sites are located where risk assessment has shown significant risk of failure of WFD ecological quality standards. In addition sites may be sampled for investigative work, or on an ad hoc basis. Sampling areas are located with a larger survey area and must be representative of the overall survey area. Once samples are collected they are sent NRW ecology laboratories for identification using standard methodologies, employing a strict Analytical Quality Control (AQC) procedure.
Once the data is collated in the central database, it has then been extracted and QA'd before being published. It is important to note that this dataset will include some sampling events from recent months where sampling has been undertaken but laboratory analysis has not been completed, therefore the full complement of taxa for that sampling event will not yet be uploaded. These records will be completed in future data uploads from NRW to the NBN Atlas. This dataset also includes records for some non-macroinvertebrate species, such as birds and fish, that were either observed or collected during sampling. Any non-target organisms collected during sampling were immediately returned to the Lake.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- freshwater (fresh water, open water) (see also freshwater ecology) (see also inland waters,rivers,lakes)
- lake ecology
- biological surveys
- biological monitoring
- NBN Atlas
- freshwater biology
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2025-01-08
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
-
Part of this dataset is sensitive, and access may be restricted under relevant legislation. NRW may NOT publish or disseminate the sensitive data. Requests should be referred to NRW's Access to Information Officer. However, there are no access restrictions on non-sensitive data. NRW may release, publish or disseminate a redacted version of the data freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© CNC/NRW NRW does NOT grant permission to third parties to re-use or disseminate the full dataset. A redacted version of the 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
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313631323737 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Natural Resources Wales (NRW) Ecological Data held in WISKI (KiEco)
NRW_DS122446
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2025-05-07T09:11:20.287Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0