Freshwater Gwyniad (Coregonus lavaretus) Species Survey Data

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  • wel
  • All

The gwyniad (Coregonus lavaretus) population of Llyn Tegid has been considered for a number of years to be threatened by deteriorating environmental conditions, especially those associated with eutrophication. This dataset contains species data from the results of projects established to carry out translocation, hydroacoustic surveys and measurement of environmental variables. This dataset comprises of a number of surveys entered into Recorder 6 which have been packaged for dissemination onto the NBN Atlas. The purpose of this survey work and collation was to develop a generic whitefish sampling protocol suitable for Llyn Tegid and to produce a condition assessment of the population. Data is collected in Llyn Tegid and Llyn Arenig Fawr. All hydroacoustic records are available for site centroid only. Gill netting results are recorded at the site of the cast where information was available.

Identification

Dynodydd
Identifier
NRW_DS116344
Teitl Amgen
Alternative Title
  • Gwyniad Gill netting survey of Llyn Tegid 2003 - CCW Science Report 597 CCW000800000000E
  • Gwyniad Hydroacoustic and Gill Netting Survey of Llyn Arenig Fawr 2012- CCW Science Report 1013 CCW000800000000I
  • Gwyniad Hydroacoustic Survey 2003 - 2009 - CCW Science Report 903 - Countryside Coucil for Wales CCW000800000000C
  • Gwyniad Hydroacoustic and Gill netting survey of Llyn Arenig Fawr 2009 - CCW Science Report 904 CCW000800000000D
  • Llyn Arenig Fawr Hydroacoustic Gwyniad Surveys
  • Arolygon Hydroacwstig a Thrawsleoli Gwyniaid Llyn Tegid
Laith Metadata
Metadata Language
English
Lineage

Hydroacoustic surveys are carried out to detect fish populations. Gill nettings provides information on actual fish species and allows ground-truthing and estimates of the Gwyniad population to be made.
Additional Information

For further information see the survey metadata and reports: - 101834 Llyn Tegid Hydroacoustic Surveys and Gwyniad Translocations 2004-2009 - 115217 Llyn Tegid and Llyn Arenig Fawr hydroacoustic and Gwyniad surveys 2012 - 115048 Llyn Tegid Hydroacoustic Surveys and Gwyniad Translocation 2003
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2016-08-17
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Centre for Ecology and Hydrology (CEH)
Environment Centre Wales, Deiniol Road, Bangor, Gwynedd, LL57 2UW, Wales
http://www.ceh.ac.uk/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
Hyd
Geographic Extent
GWYNEDD - GWYNEDD
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword
 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Database ()

    Specification

    [A] Species data is held in Recorder 6. - Gwyniad Hydroacoustic and Gill netting survey of Llyn Arenig Fawr 2009 - CCW Science Report 904 CCW000800000000D - Gwyniad Hydroacoustic Survey 2003 - 2009 - CCW Science Report 903 - Countryside Council for Wales CCW000800000000C - Gwyniad Hydroacoustic and Gill Netting Survey of Llyn Arenig Fawr 2012- CCW Science Report 1013 CCW000800000000I - Gwyniad Gill netting survey of Llyn Tegid 2003 - CCW Science Report 597 CCW000800000000E [B] This dataset is also available to download on the NBN Gateway - See Resource Locator

Lleolwr Adnoddau
Resource Locator
View and Download Data

World Wide Web page

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
Conformity
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
Explanation
Degree
false
Lineage

Hydroacoustic surveys are carried out to detect fish populations. Gill nettings provides information on actual fish species and allows ground-truthing and estimates of the Gwyniad population to be made.
 

Keywords

Allweddair
Keywords

NRW Thesaurus
  • coregonus lavaretus
  • gwyniad (freshwater whitefish)
  • hydroacoustic
  • National Biodiversity Network [NBN]
  • NBN Atlas
  • Llyn Tegid
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-04-09
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

NRW SMNR Keywords
  • Freshwater and Wetlands (SMNR)
  • Sustainable Management of Natural Resources (SMNR)
  • Ecosystem (SMNR)
  • Management Areas (SMNR)
  • Animals, Plants and Other Organisms (SMNR)
  • Water Quality (SMNR)
  • Natural Resources (Incl. Features and Processes) (SMNR)
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-03-05
Code
geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Gwyniad translocation project : Phase one : a condition assessment of the potential donor population in Llyn Tegid
NRW Related Title

Gwyniad translocation project 2004 - 05 : hydroacoustic survey of Llyn Tegid
NRW Related Title

Llyn Tegid hydroacoustic survey 2009
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW 2008 There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313136333434 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Species Data on the NBN Atlas

NRW_DS116805
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-05-31T09:38:51.137Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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