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The purpose of this broad scale mapping (BSM) study was to obtain an estimation of the geographic distribution and extent of the qualifying biological resources (habitats and their associated biological communities â?? biotopes) within the protected area in order that a comprehensive management plan can be developed for North Rona marine SAC. The survey area encompasses the seabed all around North Rona. BSM was conducted in two phases: 1) an acoustic survey; 2) a ground-truthing survey through camera deployments (video and still photography). The aim of the acoustic element of the survey was to identify different backscatter returns and describe, as well as delineate, the extent of the various seabed habitat types occurring around North Rona. A digital sidescan sonar mosaic, in conjunction with single beam echo sounder derived bathymetry, provided the initial broadview to map the substrata present throughout the survey area as well as allowing the identification of any features of interest. The aim of the ground-truthing element of the survey was to provide a description of the richness and diversity of the habitats on both rocky reef and the softer sediments. The biotope distribution and species composition was developed through interpretation of dropdown video footage and digital still photography, taken after evaluation of the sidescan mosaic. All survey operations were conducted by contractors Seastar Survey Ltd from their vessel SV Otarie.
Scottish Natural Heritage (SNH), Headquaters
no restrictions to public access
| Other details | ||
| Internal code | Internally assigned metadata identifier | 4453 |
| 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. | 2009 Scottish Natural Heritage (SNH) North Rona broad scale mapping survey |
| 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. | 9dfaf85d6c3dfafd55000a6c18da6bc0 |
| Resource Identifier | This is the code assigned by the data owner. | GB-SCT-SNH-ME-000119-MRSNH01600000006-NRona |
| 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 | 2009-06-26 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2009-08-13 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 300 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
| 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 purpose of this broad scale mapping (BSM) study was to obtain an estimation of the geographic distribution and extent of the qualifying biological resources (habitats and their associated biological communities â?? biotopes) within the protected area in order that a comprehensive management plan can be developed for North Rona marine SAC. The survey area encompasses the seabed all around North Rona. BSM was conducted in two phases: 1) an acoustic survey; 2) a ground-truthing survey through camera deployments (video and still photography). The aim of the acoustic element of the survey was to identify different backscatter returns and describe, as well as delineate, the extent of the various seabed habitat types occurring around North Rona. A digital sidescan sonar mosaic, in conjunction with single beam echo sounder derived bathymetry, provided the initial broadview to map the substrata present throughout the survey area as well as allowing the identification of any features of interest. The aim of the ground-truthing element of the survey was to provide a description of the richness and diversity of the habitats on both rocky reef and the softer sediments. The biotope distribution and species composition was developed through interpretation of dropdown video footage and digital still photography, taken after evaluation of the sidescan mosaic. All survey operations were conducted by contractors Seastar Survey Ltd from their vessel SV Otarie. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The North Rona BSM survey was divided into two phases; an acoustic survey and a ground-truthing survey. The objectives of the acoustic survey were to acquire bathymetric data using a dual frequency single beam echo sounder and high frequency sidescan sonar. The objectives of the ground-truthing survey were to acquire high resolution video and still photographs using a drop-down camera system and an ROV. Acoustic survey work was undertaken between 26th June and 2nd July 2009, onboard Seastar Survey Ltd's survey vessel RV Otarie. Ground-truthing survey work was undertaken later in the summer between 3rd and 13th August 2009 by the same contractors and survey vessel. 1) Acoustic survey work: acoustic field work was undertaken using a Leica 1200 RTK Rover GPS system, an EdgeTech FS 4200 dual frequency sidescan sonar system, and a Marimatech E-Sea Sound 206 dual frequency echosounder (33/200 kHz). The acoustic survey area was divided into three main areas (E, S, W) with 16, 20, and 13 planned acoustic lines in each, respectively, to simplify survey operations and ensure that the acoustic work was completed in its entirety within the SAC. Seabed backscatter data was collected using an EdgeTech 4200-FS dual frequency (120/410 kHz) sidescan sonar. Processing of the bathymetric data was undertaken using the post processing tools within the survey management software. This was undertaken with reference to the echo sounder paper trace records as part of our quality control procedures. 2) Ground-truthing survey work: fieldwork was undertaken using a Kongsberg OE 14-208 shallow water camera system mounted obliquely on a seabed camera frame. A flash unit and two sub-sea lights were also mounted on the frame. These units were linked to the surface with a soft umbilical cable. The shallow-water camera system was used for the ground-truthing of the sidescan sonar imagery. All camera deployments were established as transects across sites of interest, which were selected after scrutinising the acoustic survey data. The vessel was positioned at one end of a transect using DGPS. The camera was then deployed and lowered to the seabed. Once the camera system was at the seabed and had time to settle, the vessel drifted along the transect at approximately 0.5 knots. The camera frame was towed immediately above the seabed during the deployments, resulting in a seabed coverage of each still photograph of approximately 1 m2. Before each deployment a â??clapper boardâ?? containing site name, date and weather conditions was videoed and photographed as a quality assurance (QA) record. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Axelsson, M., Dewey, S. and Doran, J. (2010). Broad scale mapping of the North Rona Special Area of Conservation (SAC). Scottish Natural Heritage Commissioned Report No 386. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | NDGO0005 | |
| Keyword title | data.gov.uk | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Elevation |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geology | |
| 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 | Hydrography | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Land cover | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Oceanographic geographical features | |
| 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 | Bathymetry and Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustic backscatter in the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biodiversity indices | |
| 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 | Habitat characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Side-scan sonar | |
| 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 | Habitats and biotopes | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biodiversity | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environment Monitoring | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | bathymetry | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 59.1404 |
| East | The eastern-most limit of the data resource in decimal degrees | -5.7993 |
| South | The southern-most limit of the data resource in decimal degrees | 59.1112 |
| West | The western-most limit of the data resource in decimal degrees | -5.8556 |
| Regional sea | Scottish Continental Shelf | |
| 47E4 | ||
| 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 | Scottish Natural Heritage (SNH), Headquaters | |
| Individual name | Scottish Natural Heritage (SNH) | |
| Position name | Data Manager | |
| Phone | 01463 725000 | |
| Delivery point | Great Glen House, Leachkin Road | |
| Postal code | IV3 8NW | |
| City | Inverness | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Data Archive for Seabed Species and Habitats (DASSH) | |
| Position name | Data Manager | |
| Phone | 01752 633102 | |
| Fax | 01752 633291 | |
| Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
| Postal code | PL1 2PB | |
| City | Plymouth | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | SeaStar Survey | |
| Individual name | M. Axelsson | |
| 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 | Scottish Natural Heritage (SNH), Headquaters | |
| Individual name | Scottish Natural Heritage (SNH) | |
| Position name | Data Manager | |
| Phone | 01463 725000 | |
| Delivery point | Great Glen House, Leachkin Road | |
| Postal code | IV3 8NW | |
| City | Inverness | |
| 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. | no restrictions to public access |
| 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. | Not for navigational use; This survey recorded no species or biotope occurrences that SNH consider as sensitive; all records may therefore be released in response to requests covered by Environmental Information Regulations or Freedom of Information Regulations; additionally its re-use and dissemination is permissible under Open Government Licence terms. Any re-use of this data will acknowledge the copyright owner. |
| Available data formats | ||
| Data format | 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. | 2010-12-31 |
| Metadata date | The date when the content of this metadata record was last updated. | 2020-03-05 |
| 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 | 2.3.8 |
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