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.

Identifier: NRW_DS115048

Alternative Title

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: 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: 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

Biota

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Centre for Ecology and Hydrology (CEH)

Environment Centre Wales, Deiniol Road, Bangor, Gwynedd, LL57 2UW, Wales

http://www.ceh.ac.uk/

Extent

Geographic Extent: GWYNEDD - GWYNEDD

Format Type and Description

Database Database ()

Specification

[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

Data quality

Quality Scope: Dataset

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 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

GEMET - INSPIRE themes, version 1.0

Species distribution

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

Llyn Tegid
gwyniad (freshwater whitefish)
coregonus lavaretus
hydroacoustic
gill nets

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Code: Latitude and Longitude (EPSG::4326)

Content Information

NRW Profile

Custom Elements

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

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: 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: © 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

File Identifier: 4f4c4942-4343-5764-6473-313135303438 XML

Metadata Language: English

Parent Identifier: 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: 1.0

pointOfContact

Master Reference Data Team

Natural Resources Wales, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW

http://naturalresourceswales.gov.uk/splash?orig=/

Publishing Body

Access the portal

Full access to the portal and metadata.

Llyn Tegid Hydroacoustic Surveys and Gwyniad Translocation 2003

Identification

Temporal Extent

Extent

Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body