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The purpose of this data capture was to gain an understanding of the variety and species composition of intertidal communities and their macro-scale distribution within the interest features of the Special Area of Conservation (SAC). The present study aims to revisit the area to undertake representative sampling to be compared to the phase 1 mapping survey undertaken in 1999 and 2001 in order to assess shifts and changes in intertidal habitats within the SAC. As such, the specific objectives of the current survey were therefore to: - Undertake in-situ biotope recording along pre-defined transects to establish the extent and distribution of intertidal soft sediment biotopes - Verify field observations with quantitative sampling of the intertidal habitats using core sampling for benthic infauna (and particle size analysis for sedimentary characterisation) - Compare 2005 findings with baseline phase 1 mapping survey data with the view to detect changes or shifts in biotope distribution - Assign the 2004 biotope classification. Between 1999 and 2001, the Countryside Council for Wales (CCW) undertook a phase 1 Marine Nature Conservation Review (MNCR) biotope mapping survey of the intertidal areas of the Carmarthen Bay and Estuaries Special Area of Conservation (SAC). The study identified over 80 littoral biotopes covering an area of approximately 130,000 hectares and included several important sub-features such as seagrass Zostera noltii beds, saltmarsh, piddocks in clay, hydroid rockpools, tide-swept algal biotopes, the presence of the polychaete worm Ophelia bicornis and the presence of the tasselweed Ruppia maritima. These habitats were resurveyed in 2004 in order to assess their current distribution and status. In 2005 a further survey was commissioned to assess the macro-scale distribution and community comp osition of the littoral biotopes in the SAC and determine any significant changes from the phase 1 biotope mosaic.
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 | 1832 |
| 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. | Carmarthen Bay Special Area of Conservation (SAC) Intertidal Sediment Flats Monitoring 2005 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Monitro Gwastadeddau Gwaddodion Rhynglanwol ACA Bae Caerfyrddin 2005, 2005 CCW / IECS Carmarthen Bay and Estuaries SAC Biotope monitoring survey MRCCW3030000001E |
| 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. | 4f4c4942-4343-5764-6473-313032303333 |
| Resource Identifier | This is the code assigned by the data owner. | 102033 |
| 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 | 2005-08-21 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2005-08-24 |
| 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 purpose of this data capture was to gain an understanding of the variety and species composition of intertidal communities and their macro-scale distribution within the interest features of the Special Area of Conservation (SAC). The present study aims to revisit the area to undertake representative sampling to be compared to the phase 1 mapping survey undertaken in 1999 and 2001 in order to assess shifts and changes in intertidal habitats within the SAC. As such, the specific objectives of the current survey were therefore to: - Undertake in-situ biotope recording along pre-defined transects to establish the extent and distribution of intertidal soft sediment biotopes - Verify field observations with quantitative sampling of the intertidal habitats using core sampling for benthic infauna (and particle size analysis for sedimentary characterisation) - Compare 2005 findings with baseline phase 1 mapping survey data with the view to detect changes or shifts in biotope distribution - Assign the 2004 biotope classification. Between 1999 and 2001, the Countryside Council for Wales (CCW) undertook a phase 1 Marine Nature Conservation Review (MNCR) biotope mapping survey of the intertidal areas of the Carmarthen Bay and Estuaries Special Area of Conservation (SAC). The study identified over 80 littoral biotopes covering an area of approximately 130,000 hectares and included several important sub-features such as seagrass Zostera noltii beds, saltmarsh, piddocks in clay, hydroid rockpools, tide-swept algal biotopes, the presence of the polychaete worm Ophelia bicornis and the presence of the tasselweed Ruppia maritima. These habitats were resurveyed in 2004 in order to assess their current distribution and status. In 2005 a further survey was commissioned to assess the macro-scale distribution and community comp osition of the littoral biotopes in the SAC and determine any significant changes from the phase 1 biotope mosaic. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Sampling was undertaken using transects in order to target a large number of sites, covering a wide range of biotopes. A transect was initially chosen for each of 18 sites which was thought to cover the most number of representative biotopes (Appendix 1) with an additional transect added (Transect 19) during the survey to increase coverage in the 'Three Rivers' area in which the cockle fishery had just reopened. Each transect was located using a Thales Mobile mapper GPS based on positions provided by CCW. Starting at the top of the shore the upper and lower extents of each distinct biotope along the transect was tracked with the GPS (either on foot or using quad bike for more extensive habitats). At each distinct habitat, the substratum and dominant/ characteristic species were identified (in each habitat a surface inspection was complemented by sub-surface infaunal sediment sampling with sediment sieved through a 0.5 mm mesh sieve and species identified). In addition supplementary information was also recorded e.g. surface features, indication of natural or anthropogenic impact impacts recorded (i.e. blown sand, moving drainage channels, vehicle tracks, diggings, etc). This information was then used to assign a biotope code to each habitat. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | A phase 1 biotope mapping survey of the intertidal areas of the Carmarthen Bay and Estuaries Special Area of Conservation (SAC) has previously been carried out by CCW between 1999 and 2001. See also: Rowe, G.A, (2006). Carmarthen Bay SAC Sediment Flats Monitoring 2005: Intertidal Core Analysis. A report to the Countryside Council for Wales by Emu Ltd, Durley, Southampton. CCW Marine Monitoring Report No: 46. pp.89 |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitats and biotopes |
| 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 | Habitat characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat extent | |
| 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 | 51.83254706 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.04074671 |
| South | The southern-most limit of the data resource in decimal degrees | 51.55579486 |
| West | The western-most limit of the data resource in decimal degrees | -4.735325309 |
| Regional sea | 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) | |
| 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 | Hull University. Institute Of Estuarine And Coastal Studies | |
| Phone | 01482 464120 | |
| Delivery point | The University of Hull | |
| Postal code | HU6 7RX | |
| 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 2008. 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. | 2008-12-31 |
| Date of last revision | The most recent date that the resource was revised. | 2008-12-31 |
| Metadata date | The date when the content of this metadata record was last updated. | 2021-09-02 |
| 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 |
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