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Metadata: Surveys of Sea Caves in Welsh Special Areas of Conservation (SAC)
Abstract:
Inventorial survey as a first step for former Countryside Council for Wales (CCW), now part of Natural Resources Wales (NRW), to develop sensitivity management and monitoring for submerged or partially submerged caves. Submerged or partially submerged caves are an Annex 1 habitat listed under the Habitats directive. Caves vary in size, from only a few metres to more extensive systems, which may extend hundreds of metres into the rock. There may be tunnels or caverns with one or more entrances, in which vertical and overhanging rock faces provide the principal marine habitat. Sea cave communities vary considerably depending on the structure and extent of the cave system, their degree of submergence and of exposure to sand scour and wave-surge, and their geology. Caves are typically colonised by encrusting animal species but may also support shade-tolerant seaweeds near their entrances. Physical conditions, such as inclination, wave surge, scour and shade, change rapidly from cave entrance to the inner parts of a cave, and this often leads to a marked gradation in the communities present. Surveys were set up to identify a baseline and trial survey methodologies in order to establish surveillance and monitoring programmes for the feature. 24 caves (and tunnels) were described. They include caves that are wholly Intertidal, wholly subtidal and ones with both littoral and sublittoral elements. They range from caves that extend 1-3 meters into the cliff to ones that extend up to 100 meters into the cliff. Inventorial survey as a first step for CCW to develop sensitivity management and monitoring for submerged or partially submerged caves. 24 caves across Pembrokeshire Marine Special Area of Conservation (SAC), Cardigan Bay SAC, Pen Llyn a'r Sarnau SAC and Menai Strait and Colwyn Bay SAC. All measurements were taken to a standard protocol as described in the CCW Marine Monitoring Report no. 6. Specimens were fixed and preserved.
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 | 8672 |
| 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. | Surveys of Sea Caves in Welsh Special Areas of Conservation (SAC) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2000-01 CCW /Marine Seen survey of sea caves in Welsh SACs JNCCMNCR40000961, 2002 - CCW/Marine Seen survey of sea caves in Welsh SACs MRCCW3000000001C |
| 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_DS110463 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313130343633 |
| 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 | 2000-09-28 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2002-07-26 |
| 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. | Inventorial survey as a first step for former Countryside Council for Wales (CCW), now part of Natural Resources Wales (NRW), to develop sensitivity management and monitoring for submerged or partially submerged caves. Submerged or partially submerged caves are an Annex 1 habitat listed under the Habitats directive. Caves vary in size, from only a few metres to more extensive systems, which may extend hundreds of metres into the rock. There may be tunnels or caverns with one or more entrances, in which vertical and overhanging rock faces provide the principal marine habitat. Sea cave communities vary considerably depending on the structure and extent of the cave system, their degree of submergence and of exposure to sand scour and wave-surge, and their geology. Caves are typically colonised by encrusting animal species but may also support shade-tolerant seaweeds near their entrances. Physical conditions, such as inclination, wave surge, scour and shade, change rapidly from cave entrance to the inner parts of a cave, and this often leads to a marked gradation in the communities present. Surveys were set up to identify a baseline and trial survey methodologies in order to establish surveillance and monitoring programmes for the feature. 24 caves (and tunnels) were described. They include caves that are wholly Intertidal, wholly subtidal and ones with both littoral and sublittoral elements. They range from caves that extend 1-3 meters into the cliff to ones that extend up to 100 meters into the cliff. Inventorial survey as a first step for CCW to develop sensitivity management and monitoring for submerged or partially submerged caves. 24 caves across Pembrokeshire Marine Special Area of Conservation (SAC), Cardigan Bay SAC, Pen Llyn a'r Sarnau SAC and Menai Strait and Colwyn Bay SAC. All measurements were taken to a standard protocol as described in the CCW Marine Monitoring Report no. 6. Specimens were fixed and preserved. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Phase 2 survey methods were used to describe habitats and communities. Measurements were taken and diagrams produced to show approximate dimensions of the caves and the distribution of the biotopes within them. The caves were marked with pitons or eye bolts to facilitate future monitoring programmes. Cave location was determined by GPS. Video footage was taken in selected caves. |
| 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 | cave fauna | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | caves | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | marine monitoring (see also marine surveys) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sea Caves | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Special Area of Conservation Monitoring | |
| 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 | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.43932036 |
| East | The eastern-most limit of the data resource in decimal degrees | -3.67258647 |
| South | The southern-most limit of the data resource in decimal degrees | 51.45468862 |
| West | The western-most limit of the data resource in decimal degrees | -5.51358164 |
| 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 | CCW Marine Monitoring Team | |
| Delivery point | Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresourceswales.gov.uk/splash?orig=/ | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | MarineSeen | |
| Delivery point | Estuary Cottage, Bentlass, Hundleton, Pembrokeshire, SA71 5RN, Wales | |
| fbunker@marineseen.com | ||
| URL | http://www.marineseen.com/ | |
| 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`. | Part of this dataset is sensitive and restricted. The sensitive data is as follows; Ostrea edulis. Sensitive data must be kept confidential; general release is not permitted due to risk of harm to the environment or third parties. Sensitive data may only be released under an appropriate NRW Licence. Requests should be referred to NRW's Access to Information Officer. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale. |
| 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 2002 Recipients may only re-use sensitive data in strict confidence under the terms of an appropriate NRW Licence. No publication or dissemination is permitted, except if sensitive records are removed in advance, or shown only at a coarser scale. |
| 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. | 2003-04-30 |
| 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. | 2026-03-03 |
| 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 |
| Metadata parent | NRW_DS114501 | |