A Survey of Moorings and their Impact on Seagrass Beds at Porth Dinllaen (2012)
Porth Dinllaen has one of the largest and densest seagrass beds within Wales. As with the majority of the United Kingdom the seagrass bed at Porth Dinllaen is typified by one species, Zostera marina. The seagrass beds at Porth Dinllaen spans over 1 km in length and up to 650 m wide in places, throughout the inner and outer harbour areas. Previous work has found that boat moorings create distinct radial scour patterns within the Z. marina. As part of the management of the Pen Llyn a'r Sarnau Special Area of Conservation(SAC), the SAC Officer has been working with the National Trust, Relevant Authorities, local fishermen, boat owners and other stakeholders to look at options to reduce the impact of the moorings on Z. marina at Porth Dinllaen. In 2012 surveys were conducted within the outer harbour using volunteer SCUBA divers. The aims of the 2012 surveys were to record the mooring number and designs used within Porth Dinllaen outer harbour, and assess how these moorings relate to the density of Z. marina, adjacent Z. marina canopy height, and presence of wasting. The work was carried out under the Ecosystem Resilience and Diversity Fund.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115560
- Alternative Title
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- Arolwg Angorfeydd a'u Heffaith ar Wlau Morwellt ym Mhorth Dinllaen, 2012
- Porth Dinllaen seagrass bed, Pen Llyn a'r Sarnau SAC: a survey of moorings in the outer harbour and their impact on the seagrass 2012
- Metadata Language
- English
- Lineage
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Data was collected using volunteer SCUBA divers. The project relates to work carried out on the site within the same year to look at the sediment infauna and granulometry.
- Dataset Reference Date (Publication)
- 2013-05-07
Temporal Extent
- Begin date
- 2013-08-26
- End date
- 2013-10-15
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- GWYNEDD - GWYNEDD
))
Vertical Extent
- Medin Extent Keyword
- benthic boundary layer
Vertical Extent
- Minimum value (metres)
- -5
- Maximum value (metres)
- -10
- Vertical CRS
- urn:ogc:def:datum:EPSG::5100 Sea Level depth is unadjusted and does not take into account tidal height
Distribution
- Format Type and Description
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Geographic Information System
()
- Specification
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[A] Data is stored as .xls and ESRI.shp file format
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Geographic Information System
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Data was collected using volunteer SCUBA divers. The project relates to work carried out on the site within the same year to look at the sediment infauna and granulometry.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- Porth Dinllaen
- Pen Llyn a'r Sarnau SAC
- seagrasses (see also potamogetonaceae and hydrocharitaceae)
- zostera
- posidoniaceae
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
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- Macroalgae and seagrass taxonomy-related counts
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Keywords
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
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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This data is jointly owned by NRW and Gwynedd Council 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 and Gwynedd Council 2012. 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 the copyright of NRW/Gwynedd Council 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
- 4f4c4942-4343-5764-6473-313135353630 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-12-09T12:31:43.742Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0