Mapping of the benthic biotopes in the proposed Sound of Arisaig Special Area of Conservation
SNH commissioned the BioMar project to map the distribution of biotopes and lifeforms in the Sound of Arisaig pSAC, and in addition, undertake further detailed studies of the maerl beds within the site. Video and grab samples were collected, and 12 sites surveyed in detail by diving to collect samples for maerl analysis and characterisation of the biotopes associated with the maerl. 23 biotopes were identified from the video samples and by the MNCR sealochs survey. A map of the predicted biotope distribution based on the acoustic characteristics of the sea bed was prepared for the survey area. This map is available in the Annex I and EUNIS 2007-11 classification systems.
Simple
- Alternate title
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GB000371
- Alternate title
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SNH_Arisaig_ALL_LIFEFORM_O.shp
- Date (Publication)
- 1996-12-01
- Date (Revision)
- 2023-08-16T15:00:00
- Edition date
- 1996-12-01
- Purpose
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Nature conservation ; Research
- Credit
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Davies, J. & Hall-Spencer, J. (1996). Mapping of the benthic biotopes in the proposed Sound of Arisaig Special Area of Conservation. Scottish natural Heritage Research, Survey and Monitoring Report No. 83
- Point of contact
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Organisation name Individual name Electronic mail address Role Scottish Natural Heritage
James Dargie
James.Dargie@snh.gov James.Dargie@snh.gov.uk
Point of contact
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title
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Habitats
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title
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42E4
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- Place
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Minches & West Scotland
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- Use limitation
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None - Available under the Open Government License
- Spatial representation type
- Vector
- Character set
- UTF8
- Topic category
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- Oceans
- Begin date
- 1995-01-01
- End date
- 1996-12-31
- Reference system identifier
- UTM 30N
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role Scottish Natural Heritage| Perth
David Donnan
David.Donnan@snh.gov David.Donnan@snh.gov.uk
Point of contact
- Distributor format
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Name Version Unknown
Unknown
- OnLine resource
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Protocol Linkage Name OGC:WMS
https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_view_maplibrary/wms? gb000371
OGC:WFS
https://ows.emodnet-seabedhabitats.eu/geoserver/emodnet_open_maplibrary/wfs? gb000371
WWW:LINK-1.0-http--link
https://files.emodnet-seabedhabitats.eu/data/EMODnetSBHsurvey_GB000371.zip EMODnet Seabed Habitats download
- Hierarchy level
- Dataset
Conceptual consistency
- Name of measure
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MESH Confidence Assessment
- Measure description
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https://www.emodnet-seabedhabitats.eu/resources/mesh-archive/
Quantitative attribute accuracy
- Name of measure
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RemoteTechnique
- Evaluation method description
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An assessment of whether the remote techniques used to produce this map were appropriate to the environment they were used to survey:
3 = technique(s) highly appropriate
2 = technique(s) moderately appropriate
1 = technique(s) inappropriate
Completeness commission
- Name of measure
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RemoteCoverage
- Evaluation method description
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An assessment of the coverage of the remote sensing data including consideration of heterogeneity of the seabed: (See Coverage X Heterogeneity matrix below)
Coverage scores - use these to determine coverage then combine with heterogeneity assessment to derive finale scores
3 = good coverage; 100% (or greater) coverage or AGDS track spacing <50m
2 = moderate coverage; swath approx 50% coverage or AGDS track spacing >100m
1 = poor coverage; large gaps between swaths or AGDS track spacing > 100m
Final scores
3 = good coverage OR moderate coverage + low heterogeneity
2 = moderate coverage + moderate heterogeneity OR poor coverage + low heterogeneity
1 = moderate coverage + high heterogeneity OR poor coverage + moderate or high heterogeneity
Relative internal positional accuracy
- Name of measure
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RemotePositioning
- Evaluation method description
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An indication of the positioning method used for the remote data:
3 = differential GPS
2 = GPS (not differential) or other non-satellite 'electronic' navigation system
1 = chart based navigation, or dead-reckoning
Topological consistency
- Name of measure
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RemoteStdsApplied
- Evaluation method description
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An assessment of whether standards have been applied to the collection of the remote data. This field gives an indication of whether some data quality control has been carried out:
3 = remote data collected to approved standards
2 = remote data collected to ?internal? standards
1 = no standards applied to the collection of the remote data
Temporal validity
- Name of measure
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RemoteVintage
- Evaluation method description
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An indication of the age of the remote data:
3 = < 5yrs old.
2 = 5 to 10 yrs old.
1 = > 10 years old
Non quantitative attribute accuracy
- Name of measure
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BGTTechnique
- Evaluation method description
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An assessment of whether the ground-truthing techniques used to produce this map were appropriate to the environment they were used to survey. Use scores for soft or hard substrata as appropriate to the area surveyed.
Soft substrata predominate (i.e. those having infauna and epifauna)
3 = infauna AND epifauna sampled AND observed (video/stills, direct human observation)
2= infauna AND epifauna sampled, but NOT observed (video/stills, direct human observation)
1 = infauna OR epifauna sampled, but not both. No observation.
Hard substrata predominate (i.e. those with no infauna)
3 = sampling included direct human observation (shore survey or diver survey)
2 = sampling included video or stills but NO direct human observation
1 = benthic sampling only (e.g. grabs, trawls)
Non quantitative attribute accuracy
- Name of measure
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PGTTechnique
- Evaluation method description
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An assessment of whether the combination of geophysical sampling techniques were appropriate to the environment they were used to survey. Use scores for soft or hard substrata as appropriate to the area surveyed.
Soft substrata predominate (i.e. gravel, sand, mud)
3 = full geophysical analysis (i.e. granulometry and/or geophysical testing (penetrometry, shear strenght etc))
2 = sediments described following visual inspection of grab or core samples (e.g. slightly shelly, muddy sand)
1 = sediments described on the basis of remote observation (by camera).
Hard substrata predominate (i.e. rock outcrops, boulders, cobbles)
3 = sampling included in-situ, direct human observation (shore survey or diver survey)
2 = sampling included video or photographic observation, but NO in-situ, direct human observation
1 = samples obtained only by rock dredge (or similar)
Relative internal positional accuracy
- Name of measure
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GTPositioning
- Evaluation method description
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An indication of the positioning method used for the ground-truth data:
3 = differential GPS
2 = GPS (not differential) or other non-satellite 'electronic' navigation system
1 = chart based navigation, or dead-reckoning
Completeness commission
- Name of measure
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GTDensity
- Evaluation method description
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An assessment of what proportion of the polygons or classes (groups of polygons with the same ?habitat? attribute) actually contain ground-truth data:
3 = Every class in the map classification was sampled at least 3 times
2 = Every class in the map classification was sampled
1 = Not all classes in the map classification were sampled (some classes have no ground-truth data)
Conceptual consistency
- Name of measure
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GTStdsApplied
- Evaluation method description
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An assessment of whether standards have been applied to the collection of the ground-truth data. This field gives an indication of whether some data quality control has been carried out:
3 = ground-truth samples collected to approved standards
2 = ground-truth samples collected to 'internal' standards
1 = no standards applied to the collection of ground-truth samples
Temporal validity
- Name of measure
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GTVintage
- Evaluation method description
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An indication of the age of the ground-truth data:
3 = < 5 yrs old
2 = 5 to 10 yrs old
1 = > 10 years old
Topological consistency
- Name of measure
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GTInterpretation
- Evaluation method description
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An indication of the confidence in the biological interpretation of the ground-truthing data:
3 = Evidence of expert interpretation; full descriptions and taxon list provided for each habitat class
2 = Evidence of expert interpretation, but no detailed description or taxon list supplied for each habitat class
1 = No evidence of expert interpretation; limited descriptions available
Completeness commission
- Name of measure
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RemoteInterpretation
- Evaluation method description
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An indication of the confidence in the interpretation of the remotely sensed data:
3 = Appropriate technique used and documentation provided
2 = Appropriate technique used but no documentation provided
1 = Inappropriate technique used
Note that interpretation techniques can range from ?by eye? digitising of side scan by experts to statistical classification techniques.
Completeness commission
- Name of measure
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DetailLevel
- Evaluation method description
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The level of detail to which the 'habitat' classes in the map have been classified:
3 = Classes defined on the basis of detailed biological analysis
2 = Classes defined on the basis of major characterising species or lifeforms
1 = Classes defined on the basis of physical information, or broad biological zones
Thematic classification correctness
- Name of measure
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MapAccuracy
- Evaluation method description
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A test of the accuracy of the map:
3 = high accuracy, proven by external accuracy assessment
2 = high accuracy, proven by internal accuracy assessment
1 = low accuracy, proved by either external or internal assessment OR no accuracy assessment made
Domain consistency
- Name of measure
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Remote
Domain consistency
- Name of measure
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GT
Domain consistency
- Name of measure
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Interpretation
- Statement
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Survey technique(s): Cores ; Towed video ; Diver survey ; AGDS ; Grabs
- Description
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Classification scheme: Lifeforms
- Description
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Classification scheme details: Classified according to lifeforms
- Description
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Survey technique details: Track spacing of whole area: 0.25km. Areas of interest: 0.125km spacing. Ground truthed by towed video recorder.
- Processor
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Organisation name Individual name Electronic mail address Role BioMar team (Newcastle University)
BioMar team (Newcastle University)
Principal investigator
- Description
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Mapping method: Supervised classification
- Statement
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Classification system details: Classified according to lifeforms. Survey technique details: Track spacing of whole area: 0.25km. Areas of interest: 0.125km spacing. Ground truthed by towed video recorder. Associated datasets: GB000256; GB000257; GB000261.
Also translated from EUNIS 07 into Annex I: J:\Reference\Marine\Habitats\000_ReferenceFolder_Mockup\01_Individual_HabitatMapsfromSurvey\PUBLIC_HabitatMaps.gdb\Standardised_AnnexI\GB000371_AnnexI
To do this the following changes were made: The columns EUNIS_04_Hab_Type and val_comm were removed as not needed.
The original orig_hab replaced the original tran_comm, orig_hab was updated to show the EUNIS 07 habitat (taken from hab_type), and the hab_type was updated to show the Annex I translation. Where a translation was not available NA was used instead.
T-relate was updated to show the relationship between the EUNIS 07 habitats and the Annex I translations. Where 'may occur' was specified by the correlation table used for translation the symbol '#' was used, where 'typical of' was specified '<' was used, and where the translation was NA '-' was used. Det_mthd, det_date, det_name were all updated to reflect these changes. This map is available in the Annex I and EUNIS 2007-11 classification systems.
Metadata
- File identifier
- 20e32e6d-84ec-44ad-b2df-fe4853e2d637 XML
- Character set
- UTF8
- Parent identifier
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GB000256; GB000257; GB000261 (deleted); GB000262; GB100095; GB100096; GB100097; GB100098; GB100099
- Date stamp
- 2023-09-12T09:24:03.277Z
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
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1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role Scottish Natural Heritage
Unknown
enquiries@snh.gov enquiries@snh.gov.uk
Point of contact