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Hydroid rockpools (LR.H) are, by definition, species poor in comparison to other rockpool biotopes within the UK. LR.H rockpools are shallow mixed substrata pools characterised by the hydroids Obelia longissima and Kirchenpaueria pinnata, ephemeral seaweeds such as Ulva sp. and Enteromorpha spp. and the common periwinkle Littorina littorea. The casts of the lugworm Arenicola marina and the sand mason worm Lanice conchilega can be found in sandier pools. Hydroid rockpools are also associated with mussel beds (SLR.MytX), with Mytilus edulis present in the pools. Barnacles (Semibalanus balanoides and Elminius modestus) and the keel worm Pomatoceros sp. may also be attached to the harder substrata. On the south side of the Burry Inlet, hydroid rockpools have been identified at Whiteford Point during Phase 1 biotope surveys carried out by the Countryside Council for Wales (CCW) in 2000. The rockpools are located at the tip of Whiteford Point, within the vicinity of a cast iron Victorian lighthouse, currently listed as an ancient monument. The purpose of this data capture was to map and assess the current extent and distribution of Hydroid rockpools within the Special Area of Conservation (SAC) and evaluate the possible ephemeral nature of Hydroid rockpools by assessing the species richness of the rockpools at Whiteford Point.
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 | 1824 |
| 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. | Intertidal Monitoring of Hydroid-dominated Rockpools in Carmarthen Bay and Estuaries Special Areas of Conservation (SAC) 2004 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Monitro Rhynglanwol: Pyllau Glan Mor Hydroidau yn ACA Bae Caerfyrddin ac Aberoedd (2004), 2004 CCW / IECS Carmarthen Bay and Estuaries SAC hydroid rockpool (LR.H) richness monitoring MRCCW30200000017, 2004 CCW / IECS Carmarthen Bay & Estuaries SAC LR.H transects Survey MRCCW31600000007 |
| 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. | 4f4c4942-4343-5764-6473-313032303034 |
| Resource Identifier | This is the code assigned by the data owner. | 102004 |
| 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 | 2004-09-16 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-09-17 |
| 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. | Hydroid rockpools (LR.H) are, by definition, species poor in comparison to other rockpool biotopes within the UK. LR.H rockpools are shallow mixed substrata pools characterised by the hydroids Obelia longissima and Kirchenpaueria pinnata, ephemeral seaweeds such as Ulva sp. and Enteromorpha spp. and the common periwinkle Littorina littorea. The casts of the lugworm Arenicola marina and the sand mason worm Lanice conchilega can be found in sandier pools. Hydroid rockpools are also associated with mussel beds (SLR.MytX), with Mytilus edulis present in the pools. Barnacles (Semibalanus balanoides and Elminius modestus) and the keel worm Pomatoceros sp. may also be attached to the harder substrata. On the south side of the Burry Inlet, hydroid rockpools have been identified at Whiteford Point during Phase 1 biotope surveys carried out by the Countryside Council for Wales (CCW) in 2000. The rockpools are located at the tip of Whiteford Point, within the vicinity of a cast iron Victorian lighthouse, currently listed as an ancient monument. The purpose of this data capture was to map and assess the current extent and distribution of Hydroid rockpools within the Special Area of Conservation (SAC) and evaluate the possible ephemeral nature of Hydroid rockpools by assessing the species richness of the rockpools at Whiteford Point. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The study of hydroid-dominated rockpools on a low-lying area of intertidal proved very difficult due to the variable nature of the substratum and of the areas of standing water. This report provides a reference against which the future condition of the pools can be monitored and also identifies some of the more effective means of recording the habitat and associated species. Surveys were carried out by a team of 5 surveyors working three hours either side of low water. Extent and distribution: A grid format of sample points was surveyed along lines of eastings and northings over the area of rockpools. Sample points were taken every 100m along transects. At each sample point a GPS coordinate and photograph was taken. Physical characteristics (percent sand cover , percent cover of hard substratum and percent cover of standing water) and key species of flora and fauna were recorded within the 4m2 survey area. Species diversity: A GPS point and photograph were taken for each rockpool and the boundaries of distinct rockpools were mapped using a differential GPS. Characteristics of the pool (dimension, location, distinguishing features) were noted and species present recorded. Additional underboulder species were checked for by turning over at least ten rocks. A note was made of time spent compiling the species list.Teams consisted of 2 experienced intertidal surveyors each, providing reasonable confidence in taxonomic identification. GPS position is expected to be +/- 5 m. In 2012 the species data entered into Marine Recorder was re-structured to me et standard formats. Work carried out under contract to CALM. Hydroid rockpools have been identified at Whiteford Point during Phase 1 biotope surveys carried out by CCW in 2000. As part of the ongoing monitoring program for CCW, IECS were commissioned to carry out further monitoring at this key site. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Teams consisted of 2 experienced intertidal surveyors each, providing reasonable confidence in taxonomic identification. GPS position accuracy is expected to be +/- 5 m. In 2012 the species data entered into Marine Recorder was re-structured to meet standard formats. Work carried out under contract to CALM. |
| 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 | Zoobenthos taxonomic abundance | |
| 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 | Marine Environmental Data and Information Network | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.66045164 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.240809687 |
| South | The southern-most limit of the data resource in decimal degrees | 51.64085202 |
| West | The western-most limit of the data resource in decimal degrees | -4.259212863 |
| 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 | Countryside Council for Wales (CCW) | |
| Phone | 0300 065 3000 | |
| Delivery point | Countryside Council for Wales, 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 | 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. | 2008-12-31 |
| Date of last revision | The most recent date that the resource was revised. | 2012-12-31 |
| Metadata date | The date when the content of this metadata record was last updated. | 2023-11-24 |
| 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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