© OpenStreetMap contributors
- Add External Layer
- Upload Shapefile
- Layer Tutorial
- Close
Use the checkbox () to show or hide a layer.
Use the radio buttons () to select a layer to use with the identify function.
- Layers
- Opacity
Available layers
(ctrl+c)
Search for marine data across UK organisations
- API
- How-To
- About
- Contact MEDIN
- Share
Metadata: Management Measures for Self-Propagated Future Recovery of Crawfish, Palinurus elephas, in Welsh Waters.
Abstract:
The crawfish, Palinurus elephas, is a large benthic crustacean found mainly on rocky seabeds from the Azores in the south to Norway in the North and throughout the Mediterranean. This species is commercially valuable and has been targeted by fisheries for over a century; however, fisheries in Wales and beyond have seen a steep decline in landings since the 1960s which coincided with the introduction of net fisheries for this species. The crawfish is a priority species for the UK Biodiversity Action Plan and is also an important component of Special Areas of Conservation (SACs) designated for rocky reefs. It has been identified by the National Assembly for Wales as one of the species of "principal importance for the purpose of conserving biodiversity" in Wales and is listed in the Natural Environment Rural Communities (NERC) Act 2006. This act requires that steps be taken that are 'reasonably practicable to further the conservation of the living organisms' listed and to 'promote the taking by others of such steps'. It is therefore important to understand the potential impact of fisheries management measures and other management measures on the recovery of this species both in designated areas and within the wider context of Welsh waters as a whole including the potential impact of regulations or management measures in adjacent waters. The purpose of this data capture was to investigate management measures for the self-propagated future recovery of crawfish Palinurus elephas in Welsh waters. The overall aim of this survey and reporting work was to establish the potential effectiveness of existing and possible management measures (both fishery and nature conservation based) to enable self-propagated recovery of P. elephas populations in Welsh waters within the context of their declined status. This was to be carried out through a review of relevant literature on this and other crustacean species to determine using the best available data and information the potential benefit of the different management measures.
Data holder:
Natural Resources Wales (NRW)
Click on the red button for resource contact details:
- Click on the red button for resource contact details
| Other details | ||
| Internal code | Internally assigned metadata identifier | 8787 |
| 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. | Management Measures for Self-Propagated Future Recovery of Crawfish, Palinurus elephas, in Welsh Waters. |
| 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_DS114818 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313134383138 |
| 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 | 2012-01-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-03-31 |
| 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. | The crawfish, Palinurus elephas, is a large benthic crustacean found mainly on rocky seabeds from the Azores in the south to Norway in the North and throughout the Mediterranean. This species is commercially valuable and has been targeted by fisheries for over a century; however, fisheries in Wales and beyond have seen a steep decline in landings since the 1960s which coincided with the introduction of net fisheries for this species. The crawfish is a priority species for the UK Biodiversity Action Plan and is also an important component of Special Areas of Conservation (SACs) designated for rocky reefs. It has been identified by the National Assembly for Wales as one of the species of "principal importance for the purpose of conserving biodiversity" in Wales and is listed in the Natural Environment Rural Communities (NERC) Act 2006. This act requires that steps be taken that are 'reasonably practicable to further the conservation of the living organisms' listed and to 'promote the taking by others of such steps'. It is therefore important to understand the potential impact of fisheries management measures and other management measures on the recovery of this species both in designated areas and within the wider context of Welsh waters as a whole including the potential impact of regulations or management measures in adjacent waters. The purpose of this data capture was to investigate management measures for the self-propagated future recovery of crawfish Palinurus elephas in Welsh waters. The overall aim of this survey and reporting work was to establish the potential effectiveness of existing and possible management measures (both fishery and nature conservation based) to enable self-propagated recovery of P. elephas populations in Welsh waters within the context of their declined status. This was to be carried out through a review of relevant literature on this and other crustacean species to determine using the best available data and information the potential benefit of the different management measures. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | In order to assess the potential effectiveness of existing and potential management measures for the recovery of Welsh populations of P elephas a review of available information has been carried out in the form of a literature review, including grey literature, and through liaison with persons with specific relevant expertise. Where possible direct examples of recovery attributed to different management measures are reported including timescales. Where direct examples are not available, comparisons are drawn and aspects of the biology of P. elephas are interpreted with regards to the specific management measure in question. Where relevant management measures are applied in adjacent areas with the potential to aid recovery in Welsh waters, these are also included. The limitations of each management measure in aiding the potential recovery of crawfish populations in Welsh waters are also discussed. This metadata relates to a literature review, therefore there is no associated data other than the references within the final report. |
| 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 | environmental management | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | crustacea (crustaceans) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | commercial fisheries | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | palinurus elephas | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | crawfish | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos taxonomy-related counts | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Nature conservation | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.513067 |
| East | The eastern-most limit of the data resource in decimal degrees | -2.608865 |
| South | The southern-most limit of the data resource in decimal degrees | 51.240829 |
| West | The western-most limit of the data resource in decimal degrees | -5.777741 |
| Regional sea | benthic boundary layer | |
| Wales (WLS) | ||
| 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 | NAFC Marine Centre | |
| Delivery point | Port Arthur, Scalloway, Shetland, ZE1 0UN | |
| info@nafc.uhi.ac.uk | ||
| URL | www.nafc.ac.uk | |
| 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 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 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. |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Documents |
| 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. | 2012-05-31 |
| 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. | 2026-03-03 |
| 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 |