Identification

Title

2016 - 2016 Centre for Environment, Fisheries & Aquaculture Science (Cefas) DPLUS0045 Anguilla Still Image Analysis

Abstract

Still image analysis of the groundtruthing data collected as part of the Darwin Plus funded project "Mapping Anguilla’s ‘Blue Belt’ Ecosystem Services". The project develops local capacity to undertake comprehensive marine resource assessments of Anguilla’s ‘Blue-Belt’, delivering best practice guidance for combining satellite and acoustic surveys, to extend mapping into deeper waters for the first time.

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/19319/

function: order

Unique resource identifier

code

CEFAS30b1c54b-b176-41ae-9ef7-7534bf77f183

codeSpace

http://www.cefas.co.uk/

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

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

Classification of spatial data and services

Topic category

biota

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Geographic location

West bounding longitude

-70

East bounding longitude

-60

North bounding latitude

20

South bounding latitude

10

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Temporal reference

Temporal extent

Begin position

2016-09-11T23:00:00.000Z

End position

2016-09-29T23:00:00.000Z

Dataset reference date

date type

publication

effective date

2018-05-17

Frequency of update

notPlanned

Quality and validity

Lineage

Images were collected using a small drop-down camera frame built by Cefas. The groundtruthing survey ran for 10 days in September 2016 following the MBES survey, The frame collected both high definition video and stills of the seabed in carefully selected locations around Anguilla. Using the acoustic data and local stakeholder engagement, stations were positioned around Anguilla to best describe the different habitats and substrates present. The camera system consisted of a Bowtech Video Camera and two GoPro cameras attached to a custom-made frame. At each station the vessel was positioned to the upstream side of the location and the camera was lowered to just above the seabed. The vessel was then allowed to drift over the position while the cameras collected high definition video and stills data. Each camera station lasted for 10 minutes before the camera was recovered and the vessel moved on to the next station. The still and video data were assessed for benthic habitat composition. Benthic habitat composition per photograph was assessed in terms of percentage cover using Coral Point Count® (v4.1); a software tool for determining community statistics of benthic photographs. Percentage cover was derived by randomly assigning 24 points over each photograph and then identifying the species or substrate at each point. Benthic habitat types were selected based upon the classifications derived by Mumby and Harborne (1999) [1] with adaptations for Anguilla’s management purposes and habitats specific to Anguilla. [1] Mumby, P.J., & Harborne, A.R. (1999). Development of a systematic classification scheme of marine habitats to facilitate regional management and mapping of Caribbean coral reefs. Biological conservation, 88, 155-163

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Constraint set

Limitations on public access

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Responsible organisations

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2020-01-09T15:24:45

Metadata language