The Feasibility of the Eradication of the Non Native Species Devil's Tongue Weed (Grateloupia turuturu) in Wales - Milford Haven Survey July 2013
Grateloupia turuturu, Devil's tongue weed is a Non Native Species (NNS) now found in the UK. Devil’s tongue weed grows in sheltered areas including harbours and bays, attached to pontoons, harbour walls, shells and stones. It occurs on the lower shore in pools, and subtidally to 7 m. Due to its tolerance of low salinities it may be found in estuarine areas as well as fully marine waters. A survey was undertaken to search for and record the presence of G. turuturu within Neyland marina and the surrounding Milford Haven area. The results showed that 38% of the pontoons and other floating structures surveyed in Neyland marine and wider Milford Haven waterway had a presence of G. turuturu. It is postulated that Neyland marina provides a suitable environment for reproduction of G. turuturu and introduction may have occurred through ship ballast water and/or the import of live shellfish associated with local aquaculture. The purpose of this survey was to assess the extent of dispersion of G. turuturu in Neyland marina and the wider Milford Haven waterway with the purpose of establishing whether eradication of this species was feasible. Information on the extent, density and dispersion of G. turuturu in the Milford Haven waterway may also influence future management responses to this and other marine non-native species. Recording the extent of G. turuturu informs future management response and helps decide the feasibility of eradicating the species.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS115636
- Alternative Title
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- 2013 NRW / Grateloupia turuturu records Mildord Haven survey 2013 INNS MRCCW30000000092
- Dichonoldeb dileu Grateloupia turuturu yng Nghymru - arolwg Aberdaugleddau Gorffennaf 2013
- Metadata Language
- English
- Lineage
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Pontoons and other floating structures were surveyed for the species. This involved people snorkelling around the structures and recording the presence. 22 pontoons at Neyland marina including all of the 184 finger pontoons were surveyed by teams of 2 people. Samples were also taken for further laboratory identification.
- Dataset Reference Date (Publication)
- 2014-04-30
Temporal Extent
- Begin date
- 2013-07-31
- End date
- 2013-08-05
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- SIR BENFRO - PEMBROKESHIRE
))
Vertical Extent
- Medin Extent Keyword
- benthic boundary layer
Distribution
- Format Type and Description
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Documents
()
- Specification
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[A] The final report in Microsoft Word and pdf format [B] Species data in Microsoft excel [C] A series of GIS layers on which the maps in the report are based [D] A full set of images produced in jpg format
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Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Pontoons and other floating structures were surveyed for the species. This involved people snorkelling around the structures and recording the presence. 22 pontoons at Neyland marina including all of the 184 finger pontoons were surveyed by teams of 2 people. Samples were also taken for further laboratory identification.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- invasive species (alien species)
- Grateloupia turuturu
- 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
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Surveillance of Grateloupia turuturu in Wales - Milford Haven July 2013
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, 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
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313135363336 XML
- Metadata Language
- English
- Parent Identifier
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Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501
- Resource type
- Dataset
- Metadata Date
- 2024-12-09T12:37:47.314Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0