Identification

Title

2016 Scottish Natural Heritage (SNH) Loch Alsh benthic camera survey

Abstract

The primary aim of this benthic survey in Loch Alsh, run by SNH and Marine Scotland Science (MSS) for SNH from the 4th - 6th October 2016, was to improve knowledge of the occurrence and distribution of the species and habitats within the Lochs Duich, Long and Alsh Marine Protected Area (MPA). Dropdown video drifts at 16 stations where used to achieve this, using MSS vessel MRV Alba na Mara. This survey also contributed to a monitoring programme (of management effectiveness) of refining the distribution of Habitats Directive Annex 1 features adjacent to the partially overlapping Special Area of Conservation (SAC) and to a study of the distribution of protected features within the MPA. 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.

Resource type

dataset

Resource locator

Unique resource identifier

code

GB-SCT-SNH-ME-000327-MRSNH03000000022-LA

codeSpace

http://www.nature.scot

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::4326

Additional information source

Moore, C.G. 2017. Biological analyses of underwater video from ongoing monitoring and research cruises in Lochs Sunart, Etive and Alsh, sea lochs off South Skye, the Sounds of Barra and Arisaig and around the Southern Trench. Scottish Natural Heritage Commissioned Report No. 959.

Classification of spatial data and services

Topic category

biota

Keywords

Keyword set

keyword value

effective date

2017-05-12

Geographic location

West bounding longitude

-5.7088

East bounding longitude

-5.5890

North bounding latitude

57.2858

South bounding latitude

57.2513

infralittoral

Temporal reference

Temporal extent

Begin position

2016-10-04

End position

2016-10-06

Dataset reference date

date type

publication

effective date

2017-12-31

Frequency of update

notPlanned

Quality and validity

Lineage

This subtidal seabed data was collected for SNH during a research cruise by SNH and MSS on board the MRV Alba na Mara 4th-6th October 2016. Video images were obtained from 16 drop-down video drifts. Positional details were provided for the start and end of the runs. HD video footage was recorded at a resolution of 1920x1080. Analysis 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.

Conformity

Conformity report

specification

title

MEDIN data guideline for video surveys of species and benthos.

reference date

date type

publication

effective date

2018-01-23

degree

true

explanation

See the referenced specification

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

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.

Constraint set

Limitations on public access

No restrictions on public access

Responsible organisations

Responsible party

contact position

Consultant

organisation name

No organisation

email address

c.g.moore84@gmail.com

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Scottish Natural Heritage, Inverness

email address

data_supply@nature.scot

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data Manager

organisation name

Scottish Natural Heritage, Inverness

email address

data_supply@nature.scot

responsible party role

pointOfContact

Metadata date

2019-11-22

Metadata language

eng