91730509a5830e39c3e34c617808817c
English
dataset
Scottish Natural Heritage (SNH)
Scottish Natural Heritage (SNH), Headquaters
Data Manager
01463 725000
Great Glen House, Leachkin Road
Inverness
IV3 8NW
data_supply@nature.scot
pointOfContact
2019-10-25
MEDIN Discovery metadata standard
2.3.8
urn:ogc:def:crs:EPSG::4326
2010 Scottish Natural Heritage (SNH) Clyde Sea area survey to establish the distribution of Priority Marine Features
2013-12-31
publication
GB-SCT-SNH-ME-000130-MRSNH01600000008-CS
http://www.nature.scot
The purpose of this benthic survey in the Clyde Sea area was to establish the occurrence and distribution priority marine features (PMFs). An underwater video and still photograph survey was conducted by Seastar Survey Ltd for SNH between the 4th August and 15th October 2010 to collect detailed biological information on the seabed species and habitat features present. A range of survey methods were employed, including drop-down video camera operations, sediment grab sampling and scientific diving. The main aim of the survey was to initiate a broad-scale validation survey of historic PMF records (extent, quality and health) and to conduct detailed assessments of discrete features. In addition the survey work aimed to identify new records and achieve a broad coverage of the Clyde Sea area ensuring areas with limited or no data were also surveyed. A total of 129 drop-down video stations, 15 grab samples and 6 dive stations were completed across the Clyde Sea area. All survey operations were conducted from Seastar Survey's own vessel Otarie.
M. Axelsson
SeaStar Survey
info@seastarsurvey.co.uk
originator
Scottish Natural Heritage (SNH)
Scottish Natural Heritage (SNH), Headquaters
Data Manager
01463 725000
Great Glen House, Leachkin Road
Inverness
IV3 8NW
data_supply@nature.scot
custodian
notPlanned
Database
Documents
Geographic Information System
Image
Marine Environmental Data and Information Network
NDGO0005
Habitats and biotopes
Species distribution
GEMET - INSPIRE themes, version 1.0
2008-01-06
revision
Zoobenthos taxonomy-related counts
Zoobenthos taxonomic abundance
Habitat extent
Habitat characterisation
SeaDataNet P021 parameter discovery vocabulary
2009-11-16
revision
Habitats and biotopes
INSPIRE THEMES
2011-02-16
creation
Marine
UNESCO
2003-01-01
creation
Biodiversity
GEMET
2011-07-06
creation
environment
International Standards Organisation ISO19115 Topic Categories
2005-04-27
revision
Marine Environment Monitoring
Global Change Master Directory Science Keywords V5
2006-08-31
creation
Species Distribution
INSPIRE
2017-05-12
creation
Not for navigational use; This survey recorded no species or biotope occurences 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.
otherRestrictions
No restrictions on public access
2000
English
biota
biota
Charting Progress 2 Sea Areas
2009-06-18
creation
Irish Sea
ICES Rectangles
2009-05-01
creation
39E4
ICES Rectangles
2009-05-01
creation
40E4
ICES Rectangles
2009-05-01
creation
39E5
ICES Rectangles
2009-05-01
creation
40E5
International Hydrographic Bureau, Limits of Oceans and Seas
1954-01-01
creation
Inner Seas off the West Coast of Scotland
SeaDataNet vertical extent keywords
2010-01-01
revision
circalittoral
SeaDataNet vertical extent keywords
2010-01-01
revision
infralittoral
-5.5240
-4.6160
55.4030
56.2960
2010-08-04
2010-10-15
Allen, C., Axelsson, M., Dewey, S., and Clark, L. 2013. Marine biological survey to establish the distribution of Priority Marine Features within the Clyde Sea area. Scottish Natural Heritage Commissioned Report No.437.
Data Archive for Seabed Species and Habitats (DASSH)
Data Manager
01752 633102
01752 633291
Marine Biological Association of the UK,
The Laboratory,
Citadel Hill
Plymouth
PL1 2PB
dassh.enquiries@mba.ac.uk
distributor
dataset
MEDIN data guideline for sediment sampling by grab or core for benthos
2011-02-02
publication
See the referenced specification
true
MEDIN data guideline for video surveys of species and benthos.
2018-01-23
publication
See the referenced specification
true
This subtidal seabed data from Clyde Sea area was collected by Seastar Surveys Ltd between the 4th August and 15th October 2010. Video images were obtained from a drop-down video camera system deployed approximately 1m above the seabed at 129 sites. The camera system used was a Kongsberg OE 14-208 digital still camera mounted obliquely on a drop-down camera frame. Photographs were taken at the discretion of the camera operator rather than at a set time or distance interval, with a particular focus to identify any key fauna or PMFs. Camera work took priority over grabbing effort and was always carried out before any grab deployments at each of the sites. Grab samples were taken using a 0.1 m2 van Veen grab at 15 locations in the survey area. A small sub sample (~100 g) was taken from each grab sample for Particle Size Analysis (PSA). The remaining grab sample was gently washed through a 1 mm sieve. The material retained on the sieve was then fixed using a 4% buffered formaldehyde solution to prevent sample degradation. This remaining material was retained for macrofaunal processing and analysis. In addition to the grab samples collected from Otarie by Seastar Survey, 18 grab samples from the Clyde Sea were collected during an independent survey by the Scottish Environmental Protection Agency (SEPA) and were also analysed. The SEPA samples were collected using a 0.1 m2 Day grab deployed from the SV Sir John Murray from the 16th - 17th of September 2010. At each site two grab samples were collected, one for biological analysis, and one for sediment analysis.
Scientific scuba diving was completed at 6 locations from the 13th - 15th of October. The main aim was to investigate the presence of flame shells and maerl within Loch Fyne. A combination of diver operated video, still photography and in-situ observations were used to assess the makeup, condition and coverage of a feature. The methodology for the majority of the dives involved the divers descending down a shot line at each dive site. The divers then followed a circular search pattern around the shot line at set distances â immediately around the shot line; 5 m from the shot line; and at 10 m from the shot line. Analyses of all the benthic data was undertaken by Seastar Surveys Ltd, contracted by SNH, to describe the physical structure and species assemblages present. Based on the physical and biological attributes, biotopes were allocated. Species present were identified and quantified using the semi-quantitative MNCR SACFOR scale, as far as possible. For video runs, where a run 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. Runs and run segments were assessed for the presence PMFs, as well as for the presence of species and habitats of recognised conservation importance.