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Muddy gravels consist of shores of mixed sediments ranging from muds with gravel and sand components to mixed sediments with pebbles, gravels, sands and mud in even proportions. Mixed sediments which are predominantly muddy tend to support infauna similar to mud and sandy mud shores. Although sheltered muddy gravel habitats occur principally in estuaries, rias and sea lochs in areas protected from wave action and strong tidal streams, the environmental conditions of the Menai Strait are unusual, in that the water is relatively turbid and although the area is largely sheltered from wave action it experiences extremely strong tidal currents, reaching up to 8 knots in places during spring tides. The muddy gravel LMX.Psyllid biotope has been mapped along the west side of the Menai Strai ts, with the mixed sediment shores between Beaumaris and Lleiniog being highly productive, rich in animal and plant species. The muddy gravel LMX.Psyllid contains an unusually high number of syllid polychaetes and form a nationally important biotope, uncommon within the UK. The aim of this data capture was to identify the boundary of muddy gravel and muddy gravel with canopy of tideswept Fucus serratus. - To determine what exactly constitutes the boundary of muddy gravel - To measure the extent of the muddy gravel biotope - To determine a physical damage index for muddy gravels - To take samples at old and recently impacted areas of muddy gravel. - To characterise the infaunal community and identify the degree and type of change using previous data.
Natural Resources Wales (NRW)
There are no access restrictions to this data. CCW may release, publish or disseminate it freely.
| Other details | ||
| Internal code | Internally assigned metadata identifier | 1810 |
| 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 Muddy gravels (LMX.Psyllid) in Menai Strait and Conwy Bay Special Area 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 graean lleidiog (LMX.Psyllid) yn ACA Y Fenai a Bae Conwy 2004, 2004 CCW / IECS Menai Strait and Conwy Bay SAC muddy gravel (LMX) core sampling MRCCW30200000009, 2004 CCW / IECS Menai Strait and Conwy Bay SAC muddy gravel (LMX) epibiota monitoring MRCCW30200000007 |
| 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. | 4f4c4942-4343-5764-6473-313031383936 |
| Resource Identifier | This is the code assigned by the data owner. | 101896 |
| 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 | 2002-08-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-08-03 |
| 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. | Muddy gravels consist of shores of mixed sediments ranging from muds with gravel and sand components to mixed sediments with pebbles, gravels, sands and mud in even proportions. Mixed sediments which are predominantly muddy tend to support infauna similar to mud and sandy mud shores. Although sheltered muddy gravel habitats occur principally in estuaries, rias and sea lochs in areas protected from wave action and strong tidal streams, the environmental conditions of the Menai Strait are unusual, in that the water is relatively turbid and although the area is largely sheltered from wave action it experiences extremely strong tidal currents, reaching up to 8 knots in places during spring tides. The muddy gravel LMX.Psyllid biotope has been mapped along the west side of the Menai Strai ts, with the mixed sediment shores between Beaumaris and Lleiniog being highly productive, rich in animal and plant species. The muddy gravel LMX.Psyllid contains an unusually high number of syllid polychaetes and form a nationally important biotope, uncommon within the UK. The aim of this data capture was to identify the boundary of muddy gravel and muddy gravel with canopy of tideswept Fucus serratus. - To determine what exactly constitutes the boundary of muddy gravel - To measure the extent of the muddy gravel biotope - To determine a physical damage index for muddy gravels - To take samples at old and recently impacted areas of muddy gravel. - To characterise the infaunal community and identify the degree and type of change using previous data. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Marine mud and muddy gravel habitats had previously been sampled by Barnes (2003) and CCW in August 2002. The survey was undertaken two hours either side of low water on a good spring tide with transects walked from high to low water, perpendicular to the shore along a bearing. At each sample point (sample station) GPS readings were noted. Information recorded included photograph of sediment surface, sediment type, species found on surface, % cover of fucoids, photograph of profile dug in sediment, species found in profile and infauna detectable by sieving. Sample points were spaced at 25m intervals and sufficient regular transects were sampled to ensure that extent and distribution were described. Survey dates- 02/08/04-03/08/04, historic data was also used from 2002. |
| 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 | Habitat characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat extent | |
| 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 | 53.35933154 |
| East | The eastern-most limit of the data resource in decimal degrees | -3.84514475 |
| South | The southern-most limit of the data resource in decimal degrees | 53.19418232 |
| West | The western-most limit of the data resource in decimal degrees | -4.1588367 |
| 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 | Data Services Team | |
| Phone | 0300 065 3000 | |
| Delivery point | Natural Resources Wales (NRW), 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 | Institute of Estuarine and Coastal Studies | |
| Phone | 01482 464120 | |
| Delivery point | 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. CCW 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. | © CCGC/CCW 2004. 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 CCW'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. | 2004-12-31 |
| Date of last revision | The most recent date that the resource was revised. | 2004-12-31 |
| Metadata date | The date when the content of this metadata record was last updated. | 2018-07-03 |
| 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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