Date (Creation)

2025-04-29

Date (Revision)

2025-04-29

Date (Publication)

2025-04-29

Date (released)

2025-04-29

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/2c313c0b-7cf4-4206-8cd1-adc8d0530794

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/02051

Codespace

https://data.bas.ac.uk/

Other citation details

Please cite this item as: Mathews, R., Peck, L., Barnes, D., Morley, S., & Flint, G. (2025). Marine benthic biodiversity survey comprising seabed video and imagery from Rothera Point, November 2023 to February 2024 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2c313c0b-7cf4-4206-8cd1-adc8d0530794

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Mathews, Ryan		Author
British Antarctic Survey	Peck, Lloyd		Author
British Antarctic Survey	Barnes, David		Author
British Antarctic Survey	Morley, Simon		Author
British Antarctic Survey	Flint, Gareth		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
• EARTH SCIENCE > Biosphere > Aquatic Habitat > Coastal Habitat
• EARTH SCIENCE > Land Surface > Erosion/Sedimentation > Sediment Composition
• EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
• EARTH SCIENCE > Oceans > Marine Sediments > Sedimentary Structures
• EARTH SCIENCE > Oceans > Ocean Optics > Turbidity
• EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature
• EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature
• EARTH SCIENCE > Oceans > Salinity/Density > Salinity
• EARTH SCIENCE > Oceans > Sea Ice > Icebergs
• EARTH SCIENCE > Biosphere > Animal Taxonomy
• EARTH SCIENCE > Biosphere > Zoology
• EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography
• EARTH SCIENCE > Oceans > Marine Biology
• EARTH SCIENCE > Oceans > Marine Environment Monitoring

Theme

• Adelaide Island

• Antarctic benthos

• Drop camera

• ROV

• Seabed imagery

• shallow water communities

Place

• Hangar Cove Antarctica

• North Cove Antarctica

• Rothera Research Station Antarctica

• Rothera Point Antarctica

• Adelaide Island Antarctica

• West Antarctic Peninsula Antarctica

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes
• Land cover
• Oceanographic geographical features

Access constraints

Other restrictions

Other constraints

public access limited according to Article 13(1)(e) of the INSPIRE Directive

Use constraints

License

Other constraints

Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

Data supplied under Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

This dataset is under embargo until the publication of the associated manuscript.

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Biota

Begin date

2023-11-16

End date

2024-02-19

Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

Still imagery was collected using a drop camera built and designed by the BAS marine engineering department (model number). Images were geolocated (using a GPS waypoint at time of image capture), and associated conductivity, temperature and depth (CTD) + turbidity data were collected from a Swift CTD attached the legs of the drop camera frame. Drop cam was lowered to seabed where the first image was taken and assessed for quality. The vessel was allowed to drift approximately 2 metres and then the process was repeated. Twenty images were taken at each site. Images were edited for white balance and contrast. Identification and counts of all taxa were made upon review of the images.

Video was collected using an ROV which was flown at approximately 1 m above the seabed. Transects differed in length, between 15 minutes to over an hour, depending on light levels and power consumption of the ROV. Stills were extracted from the ROV video by a random number generator to decide on which frame of video was used. ROV stills were analysed in the same manner as the drop cam images.

A novel sediment profiler (SeaPen) device was used to measure the hardness of the seabed by depth of penetration of a needle under a weight. As with the Dropcam imagery, the frame was lowered to the seabed, until contact was made, at which point the operator allowed the weighted bar to free fall from the set distance (40cm). The device used a GoPro attached to the legs to film the needle (attached to the weighted bar) penetrating the seabed. This footage was reviewed later to determine the depth of penetration.

Timelapse Cameras were also set up to overlook the survey area from above the operations and flight tower at Rothera Research station. Images were set to an interval of 1 every 10 minutes, which were converted into a timelapse video. Iceberg movement was observed to manually assess water current speed and direction.

There are additional maps that include the Zone sites, including transects of the ROV, Drop Cam, SeaPen and CTD deployments.

Data collection:

The following instruments and software were used:

Drop Cam (Built by BAS Antarctic Marine Engineers)

ROV (Boxfish Luna)

CTD + turbidity (Valeport SWiFT)

Steel sediment hand scoop

SeaPen (Built by BAS project staff and AME)

Endecott Minor 200 sieve shaker with 7 test sieves (4.00 mm, 2.36 mm, 1.0 mm, 500 nanometres, 250 nanometres, 125 nanonetres, 63 nanometres and receiver pot)

Timelapse Cameras (Brinno TLC2020-C)

GoPro (Hero 10)

PRIMER 7.0.24

R Studio 2024.09.1

Data quality:

Still imagery was quality assured in-situ via a live-view screen, this allowed repeated images to be taken assuring enough data from each site. Images were identified twice to allow an overlap for quality control. The CTD was calibrated by Valeport. All taxa in the sediment samples were identified under microscope. Images of and a subsample of taxa were sent to experts for further identification.

The ROV video stills were only accepted under strict criteria. The ROV needed to be at less than 1 m altitude above the seabed, at an angle of 45 degrees or greater. The frame needed to be in focus with adequate lighting for species identification.

The SeaPen required the GoPro's to be reviewed on a computer screen. As such repeat data collection trips were made to certain sites to make sure enough data was collected per site.

Metadata

File identifier

2c313c0b-7cf4-4206-8cd1-adc8d0530794 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-04-29

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact