2017 Scottish Natural Heritage (SNH) Sound of Barra benthic camera survey
The primary aim of this benthic survey in the Sound of Barra, run by SNH and Marine Scotland Science (MSS) for SNH on the 11th - 12th May 2017 using MSS vessel MRV Alba na Mara (cruise 0717A), was to further establish and refine the distribution of biotopes including Annex 1 habitats within and out with the SAC boundary using quantitative drop-down camera and grab sampling. Dropdown video drifts were undertaken at 30 stations, largely along the eastern fringe of the Sound. Through the analysis of seabed video, the images were used to describe the nature of the seabed in terms of the physical structure and the species assemblages. Runs and run segments were assessed for the presence of protected features and other PMFs, as well as for the presence of species and habitats of recognised conservation importance. Runs traversing a sequence of habitats were split into corresponding segments. Species present were, as far as possible, identified and quantified using the semi-quantitative MNCR SACFOR scale and biotopes were allocated based on the physical and biological attributes. Grab sampling was also undertaken on this survey at 107 sites. This data is yet to be analysed and reported.
dataset
GB-SCT-SNH-ME-000333-MRSNH0300000002F-SOB
http://www.nature.scot
eng
urn:ogc:def:crs:EPSG::4326
Moore, C. G. 2019. Biological analyses of underwater video from monitoring and research cruises in Lochs Ailort and Fyne, the Sounds of Barra and Mull, inner Moray Firth, off Wester Ross, Noss Head and Rattray Head, and around the Southern Trench in outer Moray Firth. Scottish Natural Heritage Research Report No. 1085.
biota
biota
revision
2008-01-06
revision
2009-11-16
creation
2011-02-16
creation
2003-01-01
creation
2011-07-06
creation
2012-02-14
revision
2005-04-27
creation
2006-08-31
creation
2017-05-12
-7.4586
-7.1883
57.1556
56.9186
creation
2009-06-18
Minches & Western Scotland
creation
2009-05-01
42E2
creation
2009-05-01
43E2
revision
2010-01-01
circalittoral
revision
2010-01-01
infralittoral
2017-05-11
2017-05-12
publication
2019-12-31
notPlanned
This subtidal seabed data from the Sound of Barra was collected during a research cruise run by SNH on board the MSS vessel MRV Alba na Mara (cruise 0717A) on the 11th and 12th May 2017. A total of 67 video tows were done at 30 locations within and out with the SAC. Images were obtained using a 1cam alpha Mk5 video camera, set for RS485 and fitted with 256GB of onboard memory, and a Kongsberg OE14-408 underwater digital stills camera. The video frame carried a Savante LMNI-subsea laser scaling system with green lasers set to 50cm apart. Digital still photographs were taken approximately every 60 seconds with the camera frame landed. A high definition (HD) video camera was deployed in combination with a lower resolution (720x576) navigation camera. HD video footage was recorded at a resolution of 1440x1080. Track position, time, date and depth data were displayed on a SD video overlay system. Analyses of the video footage was undertaken by SNH contractor Dr Colin Moore 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. Biotopes were allocated based on the biological and physical attributes. Where the video run traversed a sequence of biotopes, the run is split into corresponding segments with the transition points recorded using the time, position and depth.
publication
2018-01-23
true
See the referenced specification
Not to be used for navigation. 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.
No restrictions on public access
Consultant
No organisation
originator
Data Manager
Scottish Natural Heritage, Inverness
custodian
Data Manager
Scottish Natural Heritage, Inverness
pointOfContact
2019-10-25