© OpenStreetMap contributors
- Add External Layer
- Upload Shapefile
- Layer Tutorial
- Close
Use the checkbox () to show or hide a layer.
Use the radio buttons () to select a layer to use with the identify function.
- Layers
- Opacity
Available layers
(ctrl+c)
Search for marine data across UK organisations
- API
- How-To
- About
- Contact MEDIN
- Share
Metadata: Holyhead Harbour Carpet Sea Squirt Survey Data November 2020
Abstract:
This is the raw data from a dive survey of Holyhead harbour in November 2020, which focussed on mapping the distribution of the invasive non-native species Carpet seasquirt, Didemnum vexillum. It contains; • Video (MP4) and image files (JPG and ARW) of underwater habitats and species taken during the surveys • Drone aerial images and videos of the current layout of the pontoons and mooring buoys (JPG and DNG and MP4). • An Excel spreadsheet of sites surveyed • Data recording forms – PDF copies of dive log sheets and recording forms This data accompanies; Holt, R.H.F. 2018. Didemnum vexillum: survey of distribution and extent in Holyhead Harbour – November 2020. NRW Evidence report no. 538. 29 pp.
Data holder:
Natural Resources Wales (NRW)
Click on the red button for resource contact details:
- Click on the red button for resource contact details
| Other details | ||
| Internal code | Internally assigned metadata identifier | 8869 |
| 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. | Holyhead Harbour Carpet Sea Squirt Survey Data November 2020 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Holyhead Harbour dive survey data mapping the distribution of the non-native species Carpet sea squirt, Didemnum vexillum. |
| 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_DS125390 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313235333930 |
| 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 | 2020-11-03 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2020-11-05 |
| 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. | This is the raw data from a dive survey of Holyhead harbour in November 2020, which focussed on mapping the distribution of the invasive non-native species Carpet seasquirt, Didemnum vexillum. It contains; • Video (MP4) and image files (JPG and ARW) of underwater habitats and species taken during the surveys • Drone aerial images and videos of the current layout of the pontoons and mooring buoys (JPG and DNG and MP4). • An Excel spreadsheet of sites surveyed • Data recording forms – PDF copies of dive log sheets and recording forms This data accompanies; Holt, R.H.F. 2018. Didemnum vexillum: survey of distribution and extent in Holyhead Harbour – November 2020. NRW Evidence report no. 538. 29 pp. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Video and image files – these are taken to represent the full range of different habitats in Holyhead Harbour and show a range of native and non-native species which occur in the marina as part of the survey. These videos and images were taken with underwater camera apparatus. Drone aerial images and videos of the current layout of the pontoons and mooring buoys – taken with a drone piloted by CloudBase Productions. An Excel spreadsheet of sites surveyed - ‘Holyhead D vex survey results 20201103-05’ – this is a summary of the locations of the images and sites surveyed which accompanies the report Data recording forms – PDF copies of dive log sheets and recording forms – these were filled out by the dive contractors during the survey. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | The data accompanies the following report; Holt, R.H.F. 2018. Didemnum vexillum: survey of distribution and extent in Holyhead Harbour – November 2020. NRW Evidence report no. 538. 29 pp. |
| 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 | Didemnum vexillum | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Holyhead | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seabed photography | |
| 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 | 53.3498 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.5645 |
| South | The southern-most limit of the data resource in decimal degrees | 53.29446 |
| West | The western-most limit of the data resource in decimal degrees | -4.65469 |
| Regional sea | Irish Sea | |
| 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 | Cloud Base Productions Ltd. | |
| Delivery point | Cloud Base Productions Ltd., Tan Hwfa, Llanllechid, Bangor, LL57 3LA | |
| rohan@cloudbasepro.co.uk | ||
| URL | www.cloudbasepro.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`. | Access restrictions on this data have not been determined. It may contain sensitive information and therefore may be restricted under legislation. NRW may provide access to this dataset on request, however NRW may not release, publish or disseminate the data or derived products freely without further assessment. |
| 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. Data may only be re-used externally under provision and in line with the terms of a NRW licence following an assessment of the data. |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Image |
| 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. | 2022-11-09 |
| 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 |