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Metadata: Intertidal Monitoring of the Mawddach Estuary Biotopes in Pen Llyn a'r Sarnau Special Areas of Conservation (SACs) 2004
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 Afon Mawddach (Mawddach estuary) is a small, drying, bar-built estuary, and it is one of the best examples of its type in the UK. With its mountainous catchment area, it has some of the lowest nutrient inputs of any estuary in Wales. For this reason, the Mawddach estuary has been included in the Pen Llyn a'r Sarnau marine Special Area of Conservation (SAC). The Mawddach estuary is predominantly a sandy/sandy mud estuary and contains communities characteristic of these conditions. The Institute of Estuarine and Coastal Studies (IECS) as part of the 2004 intertidal monitoring programme undertook a Phase 1 biotope survey of the Mawddach estuary following previous monitoring at the site. Specific aims of the survey included to carry out a Phase 1 biotope survey along predefined transects noting infaunal species and sediment characteristics, to digitally record photographic evidence along each transect and to assign biotopes to each of the sampling locations. This in turn would allow information to be provided on conservation objectives of the Pen Llyn a'r Sarnau SAC estuary feature.
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 | 8579 |
| 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 the Mawddach Estuary Biotopes in Pen Llyn a'r Sarnau Special Areas of Conservation (SACs) 2004 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2004 CCW / IECS Pen Llyn a'r Sarnau SAC Afon Mawddach biotope transects MRCCW3020000000A, Monitro Rhynglanwol: Biotopau Aber Mawddach yn ACA Pen Llyn a'r Sarnau, 2004 |
| 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_DS102009 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313032303039 |
| 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 | 2004-07-08 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-07-08 |
| 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 Afon Mawddach (Mawddach estuary) is a small, drying, bar-built estuary, and it is one of the best examples of its type in the UK. With its mountainous catchment area, it has some of the lowest nutrient inputs of any estuary in Wales. For this reason, the Mawddach estuary has been included in the Pen Llyn a'r Sarnau marine Special Area of Conservation (SAC). The Mawddach estuary is predominantly a sandy/sandy mud estuary and contains communities characteristic of these conditions. The Institute of Estuarine and Coastal Studies (IECS) as part of the 2004 intertidal monitoring programme undertook a Phase 1 biotope survey of the Mawddach estuary following previous monitoring at the site. Specific aims of the survey included to carry out a Phase 1 biotope survey along predefined transects noting infaunal species and sediment characteristics, to digitally record photographic evidence along each transect and to assign biotopes to each of the sampling locations. This in turn would allow information to be provided on conservation objectives of the Pen Llyn a'r Sarnau SAC estuary feature. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Four transects positioned in the central section of the estuary were resurveyed. The transects were placed, two on each side of the river channel from the saltmarsh at the back of the shore to the river channel and thus traversing the fullest range and zonation of biotopes (from mud to muddy sand to sand). The original stakes, as previously used in the 1999 study, were located and the start position of each transect was noted. Survey techniques used by Wyn and Brazier, 2001 were implemented. This survey work builds on the CCW phase 1 survey of 1997 and initial trials using the same transects in 1999, as part of a LIFE project to evaluate monitoring methods (Sanderson et al. 2001). |
| 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 | sediment flats | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore) | |
| 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 | transect (transects) (transect profile) (transect profiles) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Pen Llyn a'r Sarnau SAC | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Special Areas of Conservation (SAC) - SAC monitoring | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat characterisation | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 52.76072839 |
| East | The eastern-most limit of the data resource in decimal degrees | -3.925274303 |
| South | The southern-most limit of the data resource in decimal degrees | 52.70365624 |
| West | The western-most limit of the data resource in decimal degrees | -4.057472554 |
| 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 | Countryside Council for Wales (CCW) | |
| 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 | Hull University. Institute Of Estuarine And Coastal Studies | |
| Delivery point | The University of Hull, Cottingham Road, Hull, HU6 7RX | |
| iecs@hull.ac.uk | ||
| URL | http://www.hull.ac.uk/iecs/ | |
| 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`. | There are no access restrictions to this data. NRW may release, publish or disseminate it freely. |
| 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 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 |
| 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 | |