Identification

Title

Videos and still images of the seabed from the 2018 drop camera survey off the western coast of St. Lucia

Abstract

As part of the Commonwealth Marine Economies Programme (CMEP) Cefas collected 212 drop camera video tows of the seabed off the western coast of St. Lucia in the Caribbean. The purpose was to characterise the benthic fauna within the area and support the creation of benthic habitat maps for four key areas of the island (Rodney Bay, Castries to Marigot Bay, Soufriere and Vieux Fort). The videos and still images were acquired using a lightweight drop camera frame with a Bowtech high definition video camera, Olympus Mark III stills camera, two lasers for scaling images and additional lighting for real colour images of the seabed. The drop camera frame was lowered to the seabed by hand from a vessel, with the video monitored to maintain a consistent height above the seabed. Tows were 15 minutes long with the vessel drifting in neutral so the distance covered in each tow varied. Sample depths ranged from 4-80 m and covered a range of habitats including bare sediment, seagrass, and coral and sponge dominated reefs. Still images were acquired every 10 seconds based on an automated timer. Only a limited number of the still images were processed for the creation of the seabed maps, however, all images have been retained in this data holding.

Resource type

dataset

Resource locator

https://data.cefas.co.uk/view/21137

name: Cefas Data Portal

description: The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science.

function: information

Unique resource identifier

code

CEFAS21137

codeSpace

https://data.cefas.co.uk

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

Keywords

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

revision

effective date

2010-05-18

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2012-01-11

Geographic location

West bounding longitude

-70.00

East bounding longitude

-60.00

North bounding latitude

20.00

South bounding latitude

10.00

Temporal reference

Temporal extent

Begin position

2018-08-19

End position

2018-09-19

Dataset reference date

date type

publication

effective date

2021-07-21

date type

revision

effective date

2022-03-16

date type

creation

effective date

2021-04-07

Frequency of update

notPlanned

Quality and validity

Lineage

This data holding contains the raw drop camera videos which are overlaid with the station information, GPS coordinates and time and the still images for all the stations collected during the 2018 survey. The processed still images are contained within a separate data holding. The data holding also contains the GPS coordinates for each tow as a csv file, with separate files for each day. The survey log contains the metadata recorded for each station.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

true

explanation

See the referenced specification

Data format

name of format

Unknown

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Responsible organisations

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

custodian

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

distributor

Metadata on metadata

Metadata point of contact

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2022-03-16T14:11:35

Metadata language