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Metadata: 2013 Scottish Natural Heritage (SNH) Loch Sween benthic survey
Abstract:
The purpose of this benthic survey in the Loch Sween (a possible Nature Conservation MPA at the time of survey) system was to validate historical records and determine the current distribution of target MPA search features: burrowed mud, inshore deep mud with burrowed heart urchins and beds of maerl, flameshells and native oysters, as well as the component species Ostrea edulis. A further aim was to validate records of four additional sublittoral mud and mixed sediment complexes that have been proposed as protected features within the possible MPA. Assessment of the condition of the targeted proposed protected features. This survey was split into two phases - (1) an underwater video survey and remote infaunal survey (grab and dredge) and (2) a MNCR phase 2 diving survey. An underwater video survey at 98 stations, infaunal grabs at 25 stations, naturalist dredge tows of a historical Limaria bed to supplement video samples, and single anchor dredges at 4 sites of historical Maxmuelleria were undertaken by Heriot-Watt University for SNH between the 18th and 21st March 2013. Between the 17th and 23rd April 2013, dive surveys of maerl, oyster and burrowed bud features of the the Loch, together with video and infaunal surveys of Linne Mhuirich. Detailed biological information were collected on the seabed species and habitat features present. Analyses on the seabed video and infaunal samples, commissioned by SNH, were used to describe the nature of the seabed in terms of the physical structure and the species assemblages.
Data holder:
NatureScot (HQ Inverness)
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| Other details | ||
| Internal code | Internally assigned metadata identifier | 11410 |
| 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. | 2013 Scottish Natural Heritage (SNH) Loch Sween benthic 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. | 7257d9edd93f50334bcc0372a9cb06f0 |
| Resource Identifier | This is the code assigned by the data owner. | GB-SCT-SNH-ME-000238-MRSNH01800000030-LSW |
| 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 | 2013-03-18 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2013-04-23 |
| 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. | 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 purpose of this benthic survey in the Loch Sween (a possible Nature Conservation MPA at the time of survey) system was to validate historical records and determine the current distribution of target MPA search features: burrowed mud, inshore deep mud with burrowed heart urchins and beds of maerl, flameshells and native oysters, as well as the component species Ostrea edulis. A further aim was to validate records of four additional sublittoral mud and mixed sediment complexes that have been proposed as protected features within the possible MPA. Assessment of the condition of the targeted proposed protected features. This survey was split into two phases - (1) an underwater video survey and remote infaunal survey (grab and dredge) and (2) a MNCR phase 2 diving survey. An underwater video survey at 98 stations, infaunal grabs at 25 stations, naturalist dredge tows of a historical Limaria bed to supplement video samples, and single anchor dredges at 4 sites of historical Maxmuelleria were undertaken by Heriot-Watt University for SNH between the 18th and 21st March 2013. Between the 17th and 23rd April 2013, dive surveys of maerl, oyster and burrowed bud features of the the Loch, together with video and infaunal surveys of Linne Mhuirich. Detailed biological information were collected on the seabed species and habitat features present. Analyses on the seabed video and infaunal samples, commissioned by SNH, were used to describe the nature of the seabed in terms of the physical structure and the species assemblages. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This subtidal seabed data from Loch Sween was collected by SNH during two time periods in 2013. Phase 1 of the programme (18th-21st March) involved dropdown video and remote infaunal surveys of the Loch Sween system, apart from Linne Mhuirich. Phase 2 (17th - 23rd April) included principally diving surveys of the maerl, oyster and burrowed mud features of the loch, together with video and infaunal surveys of Linne Mhuirich and limited infaunal sampling elsewhere in the Loch Sween system. Survey methodology included drop-down and diver video, grabbing and dredging and diver surveying of maerl, burrowed mud and Ostrea edulis habitats, with collection of replicate core samples for infaunal analysis of the maerl beds. 98 sites were surveyed by drop-down video from RV Serpula. 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. At each station the camera was deployed from a drifting vessel for between 3-8 minutes, and the times, depths and precise positions at the start and end of the drift using dGPS noted. Linne Mhuirich was inaccessible to RV Serpula so video runs were carried out by diving at six sites in this area using a hand-held HD video camera (Sony HD Model XR550). The video material from each station was processed in the laboratory; 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. To assist in the process of biotope identification and condition assessment, single 0.1 m2 van Veen grab samples were taken at 25 stations with a c.150 ml subsample taken for particle size analysis and the remaining material sieved on a 1 mm mesh and preserved in buffered 5% formalin. In addition, a further three replicate grab samples were collected at one where there is a historical record of inshore deep mud. During phase 2 of the survey programme the infauna at four additional sites were examined using duplicate, pooled mini van Veen grab samples (total area 0.09 m2), with the contents of a third grab subsampled for particle size analysis. One naturalist dredge tow was carried out through an area of historical Limaria bed records to supplement video samples taken at the same location and single anchor dredge samples were also collected at four sites in areas of historical records of Maxmuelleria. MNCR phase 2 surveys were carried out by diving on good examples of the biotope SS.SMu.CFiMu.MegMax. A band 4 m either side of the 25m transect tape was surveyed by two divers, who noted the presence, and where possible, estimated the abundance of conspicuous biota, collecting material which needed to be identified in the laboratory. To supplement the real-time visual records and collections, the transect band was videoed using a hand-held digital HD video camera (Canon Legria HF S30) and still photographs taken of the habitat and associated community using two Fuji Finepix S2 Pro digital still cameras with 14 mm wide-angle and 90 mm macro lenses. All video footage was analysed by contractor Dr Colin Moore and the faunal samples were processed by Fugro EMU (Edinburgh). |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Moore, C.G., Harries, D.B., Atkinson, R.J.A., Clark, L., Cook, R.L., Hirst, N.E., Saunders, G.R., Lyndon, A.R., Sanderson, W.G. and Porter, J.S. 2013. The distribution and condition of proposed protected features within the Loch Sween possible Nature Conservation MPA. Scottish Natural Heritage Commissioned Report No. 621 |
| 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 | Habitats and biotopes | |
| 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 | Habitat extent | |
| 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 | Zoobenthos taxonomy-related counts | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 56.06 |
| East | The eastern-most limit of the data resource in decimal degrees | -5.56 |
| South | The southern-most limit of the data resource in decimal degrees | 55.89 |
| West | The western-most limit of the data resource in decimal degrees | -5.76 |
| Regional sea | Minches and Western Scotland | |
| 41E4 | ||
| 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 | NatureScot (HQ Inverness) | |
| data_supply@nature.scot | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Scottish Natural Heritage (SNH), Headquaters | |
| Individual name | Scottish Natural Heritage (SNH) | |
| Position name | Data Manager | |
| Phone | 01463 725000 | |
| data_supply@nature.scot | ||
| 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 | NatureScot (HQ Inverness) | |
| Position name | NatureScot Data Manager | |
| data_supply@nature.scot | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Scottish Natural Heritage (SNH), Headquaters | |
| Individual name | Scottish Natural Heritage (SNH) | |
| Position name | Data Manager | |
| Phone | 01463 725000 | |
| data_supply@nature.scot | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Data Archive for Seabed Species and Habitats (DASSH) | |
| Individual name | Esther Hughes | |
| Position name | Data Manager | |
| Phone | 01752 633102 | |
| dassh.enquiries@mba.ac.uk | ||
| 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`. | Not to be used for navigation. Native oyster was recorded during survey. SNH Sensitive species policy regards instances of Native oyster (Ostrea edulis) species occurrences and instances of biotope Ostrea edulis beds on shallow sublittoral muddy mixed sediment (SS.SMx.IMx.Ost/ SS.IMX.Oy) as sensitive, as commercial fishing is threatening stocks. As such SNH would not release such records in response to an Environmental Information (Scotland) Regulations 2004 request at a resolution below that provided by a |
| 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. | Restrictions on public access due to sensitive species recorded, only available at 20km by 20km resolution |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Database (Marine Recorder) |
| Format in which digital data can be provided for transfer | Documents (Published report) | |
| Format in which digital data can be provided for transfer | Geographic Information System (shapefiles) | |
| 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. | 2013-12-31 |
| 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. | 2025-06-10 |
| 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 | 0d12e762-1b4e-4e6e-a916-1f05e4c963cc | |