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Metadata: Bangor University School of Ocean Sciences (SOS) Cardigan Bay Special Area of Conservation (SAC) Towed Video Seabed Surveys (2009 - 2011)
Abstract:
The primary aim of the survey work and reports by the School of Ocean Sciences was to assess the characteristics and status of offshore benthic habitats, and primarily whether 'stony reef' habitat was present and then to assess the effects of scallop dredging on those habitats. The secondary aim of this data capture was to improve seabed habitat mapping for Cardigan Bay and assign biotopes. Surveys of seabed in Cardigan Bay Special Area of Conservation (SAC) carried out by the School of Ocean Sciences (SOS) Bangor University in 2009, 2010 and 2011. Work included side-scan surveys (December 2009) grab sampling of sediments for particle size analysis (December 2009 and June 2010) and drop-down video and stills camera tows (all four surveys). The drop-down imagery dataset comprises: Survey 1 (December 2009): 72 tows (4743 stills); Survey 2 (June 2010): 59 tows (4720 stills); Survey 3 (December 2010): 13 tows (1364 stills); Survey 4 (April 2011): 47 tows (5347 stills). Video tows were approximately 10 minutes in length with still images taken every 10 seconds along the length of the tow. The videos and still images from the first two surveys were analysed by SOS and subsequently converted by Coastal Assessment Liaison and Monitoring (CALM) to a format suitable for entry into Marine Recorder including assignment of biotopes. The videos and still images from the last two surveys were analysed by CALM to describe habitats species and biotopes. Grab samples were taken from each site during the first two surveys but only the sediment particle size analyses data from the first survey are included in this dataset. Sidescan survey data are not included with this dataset. The four surveys described were not directly associated with any other programme and no further work is currently planned. However it is important to note that staff in the SOS are still working on the data collected during this survey and are planning to produce publications from it.
Data holder:
University of Wales, Bangor. School of Ocean Sciences
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| Other details | ||
| Internal code | Internally assigned metadata identifier | 7794 |
| 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. | Bangor University School of Ocean Sciences (SOS) Cardigan Bay Special Area of Conservation (SAC) Towed Video Seabed Surveys (2009 - 2011) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2009 SOS towed video Survey of offshore habitats in the Cardigan Bay SAC MRCCW3160000000A, 2010 SOS (June) towed video Survey of offshore habitats in the Cardigan Bay SAC MRCCW3160000000C, 2011 SOS towed video Survey of offshore habitats in the Cardigan Bay SAC MRCCW3160000000E, 2010 (December) SOS towed video Survey of offshore habitats in the Cardigan Bay SAC MRCCW3160000000D |
| 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_DS115275 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313135323735 |
| 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 | 2009-12-11 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2011-04-09 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 2000 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| 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 primary aim of the survey work and reports by the School of Ocean Sciences was to assess the characteristics and status of offshore benthic habitats, and primarily whether 'stony reef' habitat was present and then to assess the effects of scallop dredging on those habitats. The secondary aim of this data capture was to improve seabed habitat mapping for Cardigan Bay and assign biotopes. Surveys of seabed in Cardigan Bay Special Area of Conservation (SAC) carried out by the School of Ocean Sciences (SOS) Bangor University in 2009, 2010 and 2011. Work included side-scan surveys (December 2009) grab sampling of sediments for particle size analysis (December 2009 and June 2010) and drop-down video and stills camera tows (all four surveys). The drop-down imagery dataset comprises: Survey 1 (December 2009): 72 tows (4743 stills); Survey 2 (June 2010): 59 tows (4720 stills); Survey 3 (December 2010): 13 tows (1364 stills); Survey 4 (April 2011): 47 tows (5347 stills). Video tows were approximately 10 minutes in length with still images taken every 10 seconds along the length of the tow. The videos and still images from the first two surveys were analysed by SOS and subsequently converted by Coastal Assessment Liaison and Monitoring (CALM) to a format suitable for entry into Marine Recorder including assignment of biotopes. The videos and still images from the last two surveys were analysed by CALM to describe habitats species and biotopes. Grab samples were taken from each site during the first two surveys but only the sediment particle size analyses data from the first survey are included in this dataset. Sidescan survey data are not included with this dataset. The four surveys described were not directly associated with any other programme and no further work is currently planned. However it is important to note that staff in the SOS are still working on the data collected during this survey and are planning to produce publications from it. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Survey platform for drop-down tows and grab sampling was SOS research vessel Prince Madog. Grab sampling was carried out with a Hamond grab and sediment samples were partly processed on-board. As the main aim of the survey was to map areas of rocky reef, the on-board processing only weighed those fractions retained by 5 and 64 mm sieves. However, subsequent laboratory analysis of sub-samples provided particle size data on the finer fractions. Drop-down tows were carried out with a sledge mounted video and stills camera system (models unspecified) which was towed at a speed of approx. 0.5 knots for a period of 10 minutes. Continuous video footage was recorded on DVD and the digital stills camera took a high resolution image every 10 seconds. The field of view of the video camera covered an area of approximately 0.12m2 (width 0.41m x depth 0.30m). Each still image covered an area of 0.13m2 (0.44m x 0.30m). A manual log was kept of the position and time at the start and end of transect while the camera was on the bottom. Video and stills were analysed by marine biological surveyors to record information on habitat character, conspicuous species and their abundance. Analysis of the images from the first two surveys, by SOS staff, calculated species abundance from the number of stills in which the species was recorded and the area of seabed photographed. Analysis of the images and video from the last two surveys, by CALM staff, estimated abundance using the SACFOR abundance scale). Habitat descriptions and assignment of biotopes from the national biotope classification to each record was later carried out by CALM. Analysis included a QA process to validate and verify the recorded data. The four surveys described were not directly associated with any other programme and no further work is currently planned. However, it is important to note that staff in the SOS are still working on the data collected during this survey, and are planning to produce publications from it. The raw videos and images are owned by School of Ocean Sciences, University of Wales, Bangor. We are generally unable to share these with third parties to re-use or disseminate, although there may be some exceptions to this. The raw data was analysed to create the surveys. NRW own this resultant data entered and distributed through Marine Recorder and can provide non sensitive information under an Open Government Licence. Please see the access and use restrictions for further details. |
| 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 | Video survey | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment PSA | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | benthic marine habitats | |
| 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 | Zoobenthos taxonomic abundance | |
| 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 | 52.96019012 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.0424745 |
| South | The southern-most limit of the data resource in decimal degrees | 52.32376748 |
| West | The western-most limit of the data resource in decimal degrees | -4.80082279 |
| Regional sea | benthic boundary layer | |
| SIR CEREDIGION - CEREDIGION | ||
| 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 | University of Wales, Bangor. School of Ocean Sciences | |
| Delivery point | Bangor, Gwynedd, LL57 2DG | |
| oss011@bangor.ac.uk | ||
| URL | http://www.bangor.ac.uk | |
| 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 | University of Wales, Bangor. School of Ocean Sciences | |
| Delivery point | Bangor, Gwynedd, LL57 2DG | |
| oss011@bangor.ac.uk | ||
| URL | http://www.bangor.ac.uk | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | University of Wales, Bangor. School of Ocean Sciences | |
| Delivery point | Bangor, Gwynedd, LL57 2DG | |
| oss011@bangor.ac.uk | ||
| URL | http://www.bangor.ac.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 | |
| 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 | |
| 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`. | The raw dataset (videos and images) is wholly owned by School of Ocean Sciences, Bangor University. NRW may provide access to this dataset on request in some circumstances. However, enquirers are advised to obtain a copy from the owner/originator directly, rather than NRW. NRW may NOT publish or disseminate it in its entirety. There are no access restrictions on the survey output data held within Marine Recorder and NRW may release, publish or disseminate these data 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. | Raw survey materials (videos and images): © Bangor University 2011. NRW does NOT grant permission to third parties to re-use or disseminate this dataset. Those seeking such permission should approach the originator directly. Survey Output data - © CNC/NRW. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. |
| 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. | © Bangor University 2011. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. | |
| https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ | ||
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Movie |
| Format in which digital data can be provided for transfer | Image | |
| Format in which digital data can be provided for transfer | Delimited | |
| Format in which digital data can be provided for transfer | Database | |
| 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. | 2011-04-09 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-10-25 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-10-07 |
| 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 | |