Underwater photographs and video of aquatic flora, habitat structure and water transparency from Llynnau Cregennen.

The data supports a condition assessment of Llynnau Cregennen on the northern slope of Cadair Idris above Dolgellau. The dataset supports an assessment of both the water clarity and diversity of aquatic plants in the lake. The dataset is made up of a number of underwater video and photography surveys which were conducted by Marine Ecosol. This data was collected in order to have representative samples, images and video footage of macrophyte and faunal community assemblages within Llynnau Cregennenn.

Identifier: NRW_DS115829

Alternative Title

Llynnau Cregennen Underwater Survey
Ffotograffau a fideo tanddwr o fflora dyfrol, strwythur cynefin a thryloywder dwr o Lynnau Cregennen (2013-2014).

Metadata Language: English

Lineage: Dive teams undertook underwater visual census surveys in the form of under photography and video surveys. Both transects and point sampling took place in perseved hot spots for macrophyte speices within Llyannau Cregennen. Under the EU Habitats Directive (92/43/EEC) and the Rio Biodiversity Convention, NRW was obliged to assess Llynnau Cregennen because it had previously been identified as ecologically important. 4 transects and 35 points were surveyed at various locations around Llynnau Cregennen, which is situated on the northern slope of Cadair Idris above Dolgellau.

Dataset Reference Date (Publication): 2014-08-26

Temporal Extent

Begin date: 2014-08-26

End date: 2014-08-26

Topic category

Biota

Owner

Natural Resources Wales (NRW)

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

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

Originator

Marine Ecological Solutions Ltd

Marine Ecological Solutions Ltd, 41 High Street, Menai Bridge, Ynys Mon, LL59 5EF, Wales

http://www.marine-ecosol.co.uk

Extent

Geographic Extent: GWYNEDD - GWYNEDD

Format Type and Description

Documents Documents ()

Specification

[A] Marine EcoSol NRW Upland Lakes rough ID guide in .pdf format [B] Video footage raw . .mts format [C] Edited video footage .m2v format (per transect) [D] Imagery in .jpg and .raw format Data relevant to the positions of data capture and metadata [E] Image locations, transect locations (tracks and start and end points) and Target species locations as ArcGIS .shp files [F] Image locations, transect locations (tracks and start and end points) and Target species locations as MapInfo .tab files [G] Image locations and Metadata in .xls format [H] Project plan and dive logs in .pdf format - Project plan and paperwork regarding the days diving operations

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: Dive teams undertook underwater visual census surveys in the form of under photography and video surveys. Both transects and point sampling took place in perseved hot spots for macrophyte speices within Llyannau Cregennen. Under the EU Habitats Directive (92/43/EEC) and the Rio Biodiversity Convention, NRW was obliged to assess Llynnau Cregennen because it had previously been identified as ecologically important. 4 transects and 35 points were surveyed at various locations around Llynnau Cregennen, which is situated on the northern slope of Cadair Idris above Dolgellau.

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

FRESHWATER
aquatic plants (water plants)
water clarity

Type: Theme

Citation

Date (Publication): 2023-12-31

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

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

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, 2014 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: 4f4c4942-4343-5764-6473-313135383239 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2024-05-31T09:44:18.035Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

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

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

Publishing Body

Access the portal

Full access to the portal and metadata.

Underwater photographs and video of aquatic flora, habitat structure and water transparency from Llynnau Cregennen.

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