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The purpose of benthic survey around the Treshnish Isles was to initiate site condition monitoring (SCM) of the littoral and sublittoral reef feature of the Isle of May SAC. The SCM survey was undertaken with the objectives to: establish a baseline biological data set that will facilitate the assessment of the favourable conditional status of the reefs in future; and to allow SNH to form judgement on the current condition of the reefs in light of existing SAC management measures. To fulfil these objectives an extensive drop-down video survey of the sublittoral reef habitats of the SAC at 86 sites to characterise the major reef biotopes and MNCR phase 2 surveys of reef biotopes along relocatable transects at 6 sites spanning both littoral and inshore sublittoral environments.
Scottish Natural Heritage (SNH), Headquaters
No restrictions on public access
Other details | ||
Internal code | Internally assigned metadata identifier | 4785 |
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. | 2007 Scottish Natural Heritage (SNH) Treshnish Isles rocky reefs site condition monitoring 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. | b5af65046f64512f5842cae8890ade3f |
Resource Identifier | This is the code assigned by the data owner. | GB-SCT-SNH-ME-000113-MRSNH00800000003-TRESH |
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 | 2007-08-05 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2007-08-17 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 500 |
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 benthic survey around the Treshnish Isles was to initiate site condition monitoring (SCM) of the littoral and sublittoral reef feature of the Isle of May SAC. The SCM survey was undertaken with the objectives to: establish a baseline biological data set that will facilitate the assessment of the favourable conditional status of the reefs in future; and to allow SNH to form judgement on the current condition of the reefs in light of existing SAC management measures. To fulfil these objectives an extensive drop-down video survey of the sublittoral reef habitats of the SAC at 86 sites to characterise the major reef biotopes and MNCR phase 2 surveys of reef biotopes along relocatable transects at 6 sites spanning both littoral and inshore sublittoral environments. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | IMPORTANT NOTE: The data is stored in OS Grid ref in Marine Recorder - here it has been transformed into lat long for entry into the bounding box tab for record validation purposes. This seabed data from the Treshnish Isles was collected by Heriot-Watt University for SNH between the the 5th August and 17th August 2007. Video images were obtained from 86 drop-down video drift tows (of the intended 107 video sites due to persistent windy conditions. Note: this resulted in a slight sampling bias in favour of the north half of the SAC), each approximately 3 min duration, onboard the vessel RV Serpula. The dropdown video system was replaced by diver-held video (Panasonic DX110B 3 chip digital video camera within a Seapro housing) at 12 of the 86 stations due to complex shallow channels. The video system used consisted of a Panasonic NV-GS150 3 chip digital video camera within a Seapro housing held within a frame and illuminated by twin 100 watt lamps. A 100 m umbilical cable carried the video signal to a Sony Video Walkman for real-time observation and for recording. At each station the camera was deployed briefly from a drifting vessel, noting the times, depths and precise positions at the start and end of the drift using differential GPS (dGPS). SNH contracted Heriot-Watt University to analyse the video footage to describe the physical structure and species assemblages present. Species present were identified and quantified using the semi-quantitative MNCR SACFOR scale, as far as possible. Where video runs traversed a sequence of biotopes, the runs are split into corresponding segments with the transition points recorded using time. Segmentation of runs was not practicable in the case of mosaics of recurring biotopes, in which case all biotopes observed were simply listed. Stations were also categorised as reef, non-reef or mixed habitats based on the presence of reef biotopes or a mixture of reef and non-reef biotopes. Reef biotopes were regarded as those falling under the higher biotope categories of Infralittoral Rock and Circalittoral Rock. Relocatable survey transects were established at 6 sites, chosen to represent the range of environmental conditions and biotopes found on intertidal and shallow subtidal reefs of the SAC. The position of the marker was fixed by dGPS and several photographs taken of it from different viewpoints, with the position of the camera recorded by dGPS and the bearing to the marker taken with a sight-bearing compass. The transect was split up into a series of zones which were defined in terms of differences in the composition of the biological community and or by changes in substrate type. All subtidal work was carried out with the use of SCUBA. A band 2 m either side of the tape was surveyed by two workers intertidally and two workers subtidally. Within each zone records were taken of substrate type and biota using the MNCR SACFOR scale of abundance, with collection of material for laboratory examination where in situ identification was not possible. Subtidally, a digital video camera (Panasonic DX100B in a Seapro housing) and a digital still camera (Canon 400D digital SLR with 17 mm wide-angle lens and Sea and Sea housing) were used to make representative visual recordings of the transect zones. Intertidally, the same video camera was used to record the zones, but the digital still camera was a KODAK DX6490. Where practicable, on the intertidal and subtidal components of each transect a zone of specific interest was selected for quantitative analysis. Within such zones a 10 m tape was laid perpendicular to the transect line, with the distance along the line (and the depth for subtidal zones) being recorded. 10 square, non-overlapping quadrats were placed randomly along the tape, using a set of random numbers and both sides of the tape. On the shore a quadrat of area 0.25 m2 was employed, whereas subtidally quadrats were 0.1 m2. Before examination each quadrat was photographed using a Canon 400D digital SLR and 17 mm wide-angle lens subtidally and a Kodak DX6490 intertidally. The biota within each quadrat was then enumerated using either counts or percentage cover estimates as appropriate. |
Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Moore, Edwards, Harries, Mair (2009) The establishment of site condition monitoring of the rocky reefs of the Treshnish Isles Special Area of Conservation. |
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 | Habitats and biotopes |
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 taxonomy-related counts | |
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 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 | 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 | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | environment | |
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 | Species Distribution | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 56.5389 |
East | The eastern-most limit of the data resource in decimal degrees | -6.3448 |
South | The southern-most limit of the data resource in decimal degrees | 56.4626 |
West | The western-most limit of the data resource in decimal degrees | -6.466 |
Regional sea | Minches & Western Scotland | |
41E3 | ||
42E3 | ||
Inner Seas off the West Coast of Scotland | ||
circalittoral | ||
infralittoral | ||
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 | Heriot-Watt University School of Life Sciences | |
Individual name | Dan Harries | |
Position name | Teaching Fellow | |
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 on 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. |
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. | 2009-12-31 |
Metadata date | The date when the content of this metadata record was last updated. | 2020-03-09 |
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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