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The tentacled lagoon worm (Alkmaria romijni) is a nationally scarce protected species found in lagoonal habitats in the Pembrokeshire Marine Special Area of Conservation. In Wales it has only been recorded from two saline lagoon sites in Pembrokeshire: Neyland Weir Pool (Westfield Pill) and Carew Castle Mill Pond. Elsewhere in the UK it had been recorded from only a handful of sites in lagoons and estuaries along the English Channel and southern North Sea and internationally between Morocco and the Baltic where it is not uncommon. A romijni is limited to brackish water habitats and threats to these habitats include agricultural run-off and sewage, coastal development and coastal defence as well as pollution from industrial discharges. There were three main purposes of this data capture: - To establish a repeatable baseline survey of the tentacled lagoon worm (Alkmaria romijni) at Carew Castle Mill Pond. - To undertake a spatial survey of salinity at the sediment-water interface - To note field observations on the integrity of the inflow/outflow system or any activities at the site that might be considered to have an adverse effect on the integrity of the site as a saline lagoonal habitat.
Natural Resources Wales (NRW)
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
| Other details | ||
| Internal code | Internally assigned metadata identifier | 1886 |
| 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. | Survey of the Tentacled Lagoon Worm (Alkmaria romijni) at Carew Castle Mill Pond (2006) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Arolwg o fwydyn tentaclog y morlyn (Alkmaria romijni) ym Mhwll Melin Castell Caeriw, 2013 DRAFT CCW Carew Lagoon Survey MRCCW3000000007B, 2006 CCW Survey of the tentacled lagoon worm (Alkmaria romijni) at Carew Castle Mill Pond MRCCW30000000040 |
| 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. | 4f4c4942-4343-5764-6473-313130303338 |
| Resource Identifier | This is the code assigned by the data owner. | 110038 |
| 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 | 2006-02-17 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2006-03-15 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
| 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 tentacled lagoon worm (Alkmaria romijni) is a nationally scarce protected species found in lagoonal habitats in the Pembrokeshire Marine Special Area of Conservation. In Wales it has only been recorded from two saline lagoon sites in Pembrokeshire: Neyland Weir Pool (Westfield Pill) and Carew Castle Mill Pond. Elsewhere in the UK it had been recorded from only a handful of sites in lagoons and estuaries along the English Channel and southern North Sea and internationally between Morocco and the Baltic where it is not uncommon. A romijni is limited to brackish water habitats and threats to these habitats include agricultural run-off and sewage, coastal development and coastal defence as well as pollution from industrial discharges. There were three main purposes of this data capture: - To establish a repeatable baseline survey of the tentacled lagoon worm (Alkmaria romijni) at Carew Castle Mill Pond. - To undertake a spatial survey of salinity at the sediment-water interface - To note field observations on the integrity of the inflow/outflow system or any activities at the site that might be considered to have an adverse effect on the integrity of the site as a saline lagoonal habitat. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Initial survey- A sampling pattern of 20 stations distributed evenly across the whole Mill Pond (stations between 45 and 80m apart), was established prior to the survey using Mapinfo GIS software. The positions derived from the GIS were input into a Garmin handheld GPS in order to enable location of the sampling stations in the field. Once sampling stations had been located , a single grab of the top 20 cm of sediment were taken using a 0.025m2 hand held Ekman grab. Once the grab arrived at the surface, a sample of the water draining out of the grab was put in a pot for later determination of the salinity at the sediment surface. The grab samples were then sieved through a 0.5 mm mesh until most of the fines had been washed away. The sieved sample was then p laced in a labelled bucket and topped up with water from the Mill Pond. Samples were taken back to the laboratory. The number of Alkmaria romijni worms together with other species found in the samples were counted. The salinity of the water samples collected from the grabs determined using an Atago hand-hand refractometer. Follow up survey- a sampling technique was adopted following the principles of Adaptive Cluster Sampling (ACS), in which sampling effort is modified in response to observations made during the course of the survey. Initial survey 27 February 2006 follow up survey 15 March 2006. |
| 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 | Zoobenthos taxonomy-related counts | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.73345403 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.77113354 |
| South | The southern-most limit of the data resource in decimal degrees | 51.67565958 |
| West | The western-most limit of the data resource in decimal degrees | -4.89220896 |
| 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) | |
| Phone | 0300 065 3000 | |
| Delivery point | Maes-y-Ffynnon | |
| Postal code | LL57 2DW | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Natural Resources Wales (NRW) | |
| Phone | 0300 065 3000 | |
| Delivery point | Maes-y-Ffynnon | |
| Postal code | LL57 2DW | |
| 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) | |
| Phone | 0300 065 3000 | |
| Delivery point | Maes-y-Ffynnon | |
| Postal code | LL57 2DW | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Aquatic Survey and Monitoring Ltd (ASML) | |
| Phone | 01388 528 015 | |
| Delivery point | Whitfield Brow | |
| Postal code | DL13 2SZ | |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
| 20 Limitations on Public Access – Other constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | There are no access restrictions to this data. NRW may release, publish or disseminate it freely. |
| 21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | © CNC/NRW 2006 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 | Database |
| 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. | 2006-11-30 |
| Date of last revision | The most recent date that the resource was revised. | 2006-11-30 |
| Metadata date | The date when the content of this metadata record was last updated. | 2018-07-03 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata Standard |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.8 |
© OpenStreetMap contributors