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Metadata: Intertidal Monitoring of Eelgrass (Zostera noltii) Beds in the Menai Strait and Conwy Bay Special Areas of Conservation (SACs) 2004 and 2005
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. Seagrass beds develop in intertidal and shallow subtidal areas on sands and muds. They may be found in marine inlets and bays but also in other areas, such as lagoons and channels, which are sheltered from significant wave action. Zostera noltii generally occurs higher on the shore than the other two Zostera species found in the UK and occurs in low/variable salinity areas. Seagrass beds have important biological functions and are of conservation and economic importance; however human activity in the coastal zone (pollution, dredging boat mooring etc) can affect its distribution or even destroy the beds completely. The work expressed here is both to trial the methodology and to establish a reference condition for the eelgrass beds at Foryd Bay and Traeth Lafan in the Menai Strait and Conwy Bay SAC. The purpose of this data capture was to determine and map the extent, density and condition of Zostera noltii identified at Traeth Lafan and Foryd bay in previous years, record the presence of epiphytes and ephemeral algal species on the beds, record other conspicuous biota within the Zostera beds, record any damage or disease of the Zostera and develop and test an index of damage.
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 | 8577 |
| 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 Eelgrass (Zostera noltii) Beds in the Menai Strait and Conwy Bay Special Areas of Conservation (SACs) 2004 and 2005 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2005 CCW / IECS Menai Strait and Conwy Bay SAC Zostera noltii monitoring MRCCW3020000001C, 2004 CCW / IECS Menai Strait and Conwy Bay SAC Zostera noltii monitoring MRCCW30200000008, Monitro Rhynglanwol: Zostera noltii yn ACA Y Fenai a Bae Conwy 2004 a 2005 |
| 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_DS102007 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313032303037 |
| 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 | 2004-08-06 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2005-05-30 |
| 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. Seagrass beds develop in intertidal and shallow subtidal areas on sands and muds. They may be found in marine inlets and bays but also in other areas, such as lagoons and channels, which are sheltered from significant wave action. Zostera noltii generally occurs higher on the shore than the other two Zostera species found in the UK and occurs in low/variable salinity areas. Seagrass beds have important biological functions and are of conservation and economic importance; however human activity in the coastal zone (pollution, dredging boat mooring etc) can affect its distribution or even destroy the beds completely. The work expressed here is both to trial the methodology and to establish a reference condition for the eelgrass beds at Foryd Bay and Traeth Lafan in the Menai Strait and Conwy Bay SAC. The purpose of this data capture was to determine and map the extent, density and condition of Zostera noltii identified at Traeth Lafan and Foryd bay in previous years, record the presence of epiphytes and ephemeral algal species on the beds, record other conspicuous biota within the Zostera beds, record any damage or disease of the Zostera and develop and test an index of damage. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Both sites were surveyed over one tide cycle working three hours either side of low water. Extent of the beds was recorded using portable dGPS to map boundaries. Sampling points at each site were chosen based on a grid system. Transect lines (Foryd Bay = 100 m apart, Traeth Lafan = 50 m apart) were chosen to correspond to specific Ordnance Survey easting lines and sampling was carried out at 25 m (Foryd Bay) or 50 m (Traeth Lafan) intervals along these transect lines. At each point GPS coordinate and photograph were taken and a 50 cm x 50 cm quadrat was used to record percentage cover of Zostera, cover of Ulva sp., description of substratum, mussel crumble and evidence of disease. Z. noltii beds were identified at Traeth Lafan and Foryd Bay during the CCW intertidal Phase 1 survey in 2001. All GPS positions are expected to be +/- 5 metre accuracy. All surveyors familiar with the attributes to be recorded during these surveys. Confidence of the accuracy of the data is high. |
| Related keywords | ||
| Keyword | 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 | Menai Strait and Conwy Bay SAC | |
| 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 | Special Areas of Conservation (SAC) - SAC monitoring | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Foryd Bay [Y Foryd] | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Lafan sands (Lavan sands)(Traeth Lafan) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | seagrasses (see also potamogetonaceae and hydrocharitaceae) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | zostera | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | posidoniaceae | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | eelgrass | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | zostera marina | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | zostera angustifolia | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | zostera noltii | |
| 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 | Habitat extent | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.25164756 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.003020863 |
| South | The southern-most limit of the data resource in decimal degrees | 53.09724885 |
| West | The western-most limit of the data resource in decimal degrees | -4.334353292 |
| 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 2009. 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. | 2009-01-31 |
| 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 |
| Metadata parent | NRW_DS114501 | |