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Yellow trumpet anemone Parazoanthus axinellae is primarily a south-western species, found at Bardsey Island and is close to the northern boundary of its known distribution at this location. This species has been selected as an attribute for monitoring the condition of reefs in the Special Area of Conservation (SACs). In 1999 an assessment of appropriate methods was made to look at monitoring the abundance and population structure of Parazoanthus axinellae and the erect branching sponge Axinella dissimilis. The trials focused on comparing different techniques to find the one that was most repeatable and therefore sensitive to population change. Trials took place at Pen Cristen, on Bardsey Island. Subsequent monitoring of the Parazoanthus axinellae assemblage has occurred annually at this location when weather conditions allow. The purpose of this data capture was to monitor the numerical abundance, percentage cover and distribution of individuals within the dominant Parazoanthus axinellae assemblage using a quantitative photographic approach. This will contribute to condition assessment of the reef feature in the Pen Llyn a'r Sarnau SAC.
Natural Resources Wales (NRW)
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
| Other details | ||
| Internal code | Internally assigned metadata identifier | 1922 |
| 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. | Monitoring of Yellow Trumpet Anemone Parazoanthus axinellae at Pen Cristen, Bardsey Island |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | An Assessment of appropriate methods for monitoring a population of colonial anemone at Bardsey Island, Monitro'r anemoni clystyrog melyn Parazoanthus axinellae ar Ynys Enlli |
| 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. | 4f4c4942-4343-5764-6473-313130363839 |
| Resource Identifier | This is the code assigned by the data owner. | 110689 |
| 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 | 1999-08-19 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2011-12-31 |
| Vertical extent (max) | A positive or negative decimal number, for example, the deepest depth recorded if subtidal, or, if intertidal, the highest point recorded. | -20 |
| Vertical extent reference | This descibes the vertical coordinate reference system as referred to in the EPSG register of geodetic parameters. (epsg-registry.org) | urn:ogc:def:crs:EPSG:: |
| 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'. | annually |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Yellow trumpet anemone Parazoanthus axinellae is primarily a south-western species, found at Bardsey Island and is close to the northern boundary of its known distribution at this location. This species has been selected as an attribute for monitoring the condition of reefs in the Special Area of Conservation (SACs). In 1999 an assessment of appropriate methods was made to look at monitoring the abundance and population structure of Parazoanthus axinellae and the erect branching sponge Axinella dissimilis. The trials focused on comparing different techniques to find the one that was most repeatable and therefore sensitive to population change. Trials took place at Pen Cristen, on Bardsey Island. Subsequent monitoring of the Parazoanthus axinellae assemblage has occurred annually at this location when weather conditions allow. The purpose of this data capture was to monitor the numerical abundance, percentage cover and distribution of individuals within the dominant Parazoanthus axinellae assemblage using a quantitative photographic approach. This will contribute to condition assessment of the reef feature in the Pen Llyn a'r Sarnau SAC. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The initial data was collected as part of the LIFE monitoring trials. Initial trials compared recording of quadrats by video and by still photography at one station at Pen Cristen. It was concluded that using still photography produced better, more repeatable results. Further details can be found in Marine Monitoring Report 2.The following standard procedure is now followed for data capture at Pen Cristen. 3 permanent stations have been set up, Notch face, Wrinkle face and Long face. These are marked with ring bolts around the perimeter. Divers string tape measures between the bolts in order to position a quadrat along the edge of the tape measure. A picture is taken of the sessile community within the quadrat. The quadrat is then moved to a position alon g the tape that overlaps the first quadrat by 100mm. The process is repeated to form a continuous photographic 'belt'. Further details can be found in Marine Monitoring report 25b, SOP 06. Images from each quadrat are analysed and the area covered by Parazoanthus recorded along with the number of polyps. |
| 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 | Zoobenthos generic abundance | |
| 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 | 52.75507582 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.78274618 |
| South | The southern-most limit of the data resource in decimal degrees | 52.75085389 |
| West | The western-most limit of the data resource in decimal degrees | -4.78959462 |
| 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) | |
| Phone | 0300 065 3000 | |
| Delivery point | 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 | Countryside Council for Wales (CCW) | |
| Phone | 0300 065 3000 | |
| Delivery point | Countryside Council for Wales, Maes y Ffynnon | |
| Postal code | LL57 2DW | |
| 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. NRW 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. | © CNC/NRW 2011 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. | 2011-12-31 |
| Date of last revision | The most recent date that the resource was revised. | 2009-06-04 |
| Metadata date | The date when the content of this metadata record was last updated. | 2018-07-05 |
| 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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