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Metadata: The Feasibility of the Eradication of the Non Native Species Devil's Tongue Weed (Grateloupia turuturu) in Wales - Milford Haven Survey July 2013
Abstract:
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.
Data holder:
Natural Resources Wales (NRW)
Click on the red button for resource contact details:
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| Other details | ||
| Internal code | Internally assigned metadata identifier | 8835 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | The Feasibility of the Eradication of the Non Native Species Devil's Tongue Weed (Grateloupia turuturu) in Wales - Milford Haven Survey July 2013 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2013 NRW / Grateloupia turuturu records Mildord Haven survey 2013 INNS MRCCW30000000092 |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | NRW_DS115636 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313135363336 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2013-07-31 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2013-08-05 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | 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. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | 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. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Jennings, C. Wray, B. 2014. Surveillance of Grateloupia turuturu in Wales – Milford Haven July 2013. NRW Evidence Report No: 17, 31pp, Natural Resources Wales, Bangor. Species data is published and available to download from the NBN Atlas as part of the NRW "Marine Non Native Species records from Natural Resources Wales (NRW) Monitoring Research and Ad-hoc Sightings"(NRW_DS116352) |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Grateloupia turuturu | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | invasive species (alien species) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Macroalgae and seagrass taxonomy-related counts | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.72382269 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.87374743 |
| South | The southern-most limit of the data resource in decimal degrees | 51.65751233 |
| West | The western-most limit of the data resource in decimal degrees | -5.17252267 |
| Regional sea | benthic boundary layer | |
| SIR BENFRO - PEMBROKESHIRE | ||
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | This states any limitations on access to the data. Multiple occurences are allowed here. One entry shall be from the INSPIRE Metadata registry and the other free text should be part of the resource `Have specific limitations`. | There are no access restrictions to this data. NRW may release, publish or disseminate it freely. |
| no limitations | ||
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | © 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. |
| This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. | |
| https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ | ||
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Documents |
| Format in which digital data can be provided for transfer | Delimited | |
| Format in which digital data can be provided for transfer | Geographic Information System | |
| Format in which digital data can be provided for transfer | Image | |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2014-04-30 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-03-05 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |
| Metadata parent | NRW_DS114501 | |