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Metadata: Intertidal Survey Mapping (phase 1) from Pen-ychain to Criccieth, Pen Llyn a'r Sarnau Special Areas of Conservation (SAC) 2010
Abstract:
The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. The purpose of this data capture was to conduct a habitat survey of the intertidal area from Pen-ychain to Criccieth Castle on the south coast of the Llyn Peninsula. This work supported the detailed SAC monitoring program by providing a more up to date baseline survey of the intertidal area. It provided CCW with information to help deal with current and future casework in relation to coastal defence, and reporting particularly regarding BAP habitats and species of conservation concern. One such Biodiversity Action Plan (BAP) habitat are the Sabellaria alveolata reefs which are formed by the honeycomb worm Sabellaria alveolata, a polychaete which constructs tubes in tightly packed masses with a distinctive honeycomb-like appearance. These reefs can be up to 30 or even 50 cm thick and take the form of hummocks, sheets or more massive formations. Reefs are mainly found on the bottom third of the shore, but may reach mean high water of neap tides and extend into the shallow subtidal in places. The current report aims to fill these knowledge gaps for the survey area. The purpose of this data capture is to update previous intertidal mapping in the area and to specifically provide an updated extent of honeycomb worm reef Sabellaria alveolata. The specific project aims were to identify natural temporal changes that have been witnessed since the original Phase 1 Intertidal Mapping Project in 1996-1997.
Data holder:
Natural Resources Wales (NRW)
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| Other details | ||
| Internal code | Internally assigned metadata identifier | 8754 |
| 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 Survey Mapping (phase 1) from Pen-ychain to Criccieth, Pen Llyn a'r Sarnau Special Areas of Conservation (SAC) 2010 |
| 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_DS113087 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313133303837 |
| 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 | 2010-10-06 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2010-10-08 |
| 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 Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. The purpose of this data capture was to conduct a habitat survey of the intertidal area from Pen-ychain to Criccieth Castle on the south coast of the Llyn Peninsula. This work supported the detailed SAC monitoring program by providing a more up to date baseline survey of the intertidal area. It provided CCW with information to help deal with current and future casework in relation to coastal defence, and reporting particularly regarding BAP habitats and species of conservation concern. One such Biodiversity Action Plan (BAP) habitat are the Sabellaria alveolata reefs which are formed by the honeycomb worm Sabellaria alveolata, a polychaete which constructs tubes in tightly packed masses with a distinctive honeycomb-like appearance. These reefs can be up to 30 or even 50 cm thick and take the form of hummocks, sheets or more massive formations. Reefs are mainly found on the bottom third of the shore, but may reach mean high water of neap tides and extend into the shallow subtidal in places. The current report aims to fill these knowledge gaps for the survey area. The purpose of this data capture is to update previous intertidal mapping in the area and to specifically provide an updated extent of honeycomb worm reef Sabellaria alveolata. The specific project aims were to identify natural temporal changes that have been witnessed since the original Phase 1 Intertidal Mapping Project in 1996-1997. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The fieldwork phase was completed in October 2010; dates chosen due to suitably timed Low Water on spring tides. The survey was conducted by staff from Marine Ecological Solutions Ltd. and support provided by the Intertidal Ecologist at CCW. Intertidal habitat mapping methodologies were used as described in Wyn et al (2006) and using the 2004 biotope classification described in Conner et al (2004). The area was first mapped in July 1996 as part of the 10 year long CCW Phase 1 Intertidal project, that mapped Intertidal habitats for the entire coastline of Wales. |
| 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 | honeycomb worm | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | biotopes | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Pen Llyn a'r Sarnau cSAC | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | polychaete worms | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Phase 1 Habitat Survey | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | intertidal | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | sabellaria alveolata | |
| 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 | 52.91850733 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.22498782 |
| South | The southern-most limit of the data resource in decimal degrees | 52.8892144 |
| West | The western-most limit of the data resource in decimal degrees | -4.33004182 |
| Regional sea | benthic boundary layer | |
| GWYNEDD - GWYNEDD | ||
| 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 | Marine Ecological Solutions Ltd | |
| Delivery point | Marine Ecological Solutions Ltd, 41 High Street, Menai Bridge, Ynys Mon, LL59 5EF, Wales | |
| info@marine-ecosol.com | ||
| URL | http://www.marine-ecosol.co.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`. | The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions). |
| 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 and © Crown copyright 2011. All rights reserved. Natural Resources Wales, AC0000849444. Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS. |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Geographic Information System |
| 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. | 2011-01-31 |
| 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 |