Llyn Tegid Hydroacoustic Surveys and Gwyniad Translocation 2003
The purpose of this project was to develop a generic Whitefish sampling protocol suitable for Llyn Tegid and produce a condition assessment of the population. A population survey of Gwyniad was recommended to be undertaken after failed attempts to establish a refuge population in 2003. Project to develop a generic protocol for the assessment of whitefish (Coregonus albula and Coregonus lavaretus) populations developed by Scottish Natural Heritage (SNH) to the Gwyniad of Llyn Tegid during July 2003 with the addition of the determination of oxygen and temperature profiles and Secchi depths. The protocol involved hydroacoustics and limited gill netting. This datasets contains the results of the gill netting survey only.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115048
- Alternative Title
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- Gwyniad Gill netting survey of Llyn Tegid 2003 - CCW Science Report 597 CCW000800000000E
- Arolygon Hydroacwstig a Thrawsleoli Gwyniaid Llyn Tegid 2003
- Gill netting in Llyn Tegid
- Metadata Language
- English
- Lineage
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Hydroacoustic survey along a discrete parallel design using a BioSonics DT6000 echo sounder. Gill netting was undertaking using basic and pelagic versions of the Norden survey gill net. Nets were set at 3 sites inshore together with a basic and pelagic net in the offshore areas. Oxygen and temperature profiles were taken at one location and secchi disc readings taken at the same site.
- Additional Information
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Rivers Ecologist, NRW. Associated Report Title: Gwyniad translocation project: Phase One - a condition assessment of the potential donor population of Llyn Tegid CCW Contract Science Report No. 597 I. Winfield., J. Flectcher., J. James (2003)
- Dataset Reference Date (Publication)
- 2003-10-31
Temporal Extent
- Begin date
- 2002-07-02
- End date
- 2003-07-03
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- GWYNEDD - GWYNEDD
Distribution
- Format Type and Description
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Database
Database
()
- Specification
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[A] Report available as pdf. Ffynnon Reference Number DCT-10-025133 [B] Species data available as and Excel Spreadsheet .xlsx [C] Recorder 6 Format Gwyniad Gill netting survey of Llyn Tegid 2003 - CCW Science Report 597 CCW000800000000E
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Database
Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Hydroacoustic survey along a discrete parallel design using a BioSonics DT6000 echo sounder. Gill netting was undertaking using basic and pelagic versions of the Norden survey gill net. Nets were set at 3 sites inshore together with a basic and pelagic net in the offshore areas. Oxygen and temperature profiles were taken at one location and secchi disc readings taken at the same site.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- Llyn Tegid
- gwyniad (freshwater whitefish)
- coregonus lavaretus
- hydroacoustic
- gill nets
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Gwyniad translocation project : Phase one : a condition assessment of the potential donor population in Llyn Tegid
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© CNC/NRW 2003 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
- File Identifier
- 4f4c4942-4343-5764-6473-313135303438 XML
- Metadata Language
- English
- Parent Identifier
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Freshwater Gwyniad (Coregonus lavaretus) Species Survey Data
NRW_DS116344
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:40:23.259Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0