MEDUSA: Marine benthic Ecological Data from Underwater imagery Surveys of sub-Antarctic Crozet environments (2024)

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Data creator : Yann Lelièvre [1]
[1] : Laboratoire Biogéosciences (UMR 6282) (Université de Bourgogne)
[2] : Institut Méditérranéen de Biodiversité et d'Ecologie marine et continentale (UMR 7263)
[3] : Marine Biology Lab, Université Libre de Bruxelles
[4] : Direction de l’Environnement, Terres australes et antarctiques françaises
Description :
Inscribed on the UNESCO World Heritage list, the sub-Antarctic Crozet archipelago is located in a region facing significant environmental changes impacting a poorly known marine biodiversity. Underwater imagery constitutes a valuable non-invasive approach for gathering ecological data and improving our knowledge of ecosystems’ vulnerability. We here compiled two datasets, encompassing 17 video-imagery surveys of Crozet nearshore environments conducted in 2021 and 2022 at two sites of Ile de la Possession: Baie du Marin and Crique du Sphinx. Faunal abundance and algal cover data related to each survey are also provided. A total of 755 images were analysed, comprising 52 faunal and 14 algal taxa identified in 2021, as well as 45 faunal and 14 algal taxa identified in 2022. Video-transects were performed in shallow waters by scuba divers using a GoPro®HERO7 multiple camera set-up, and in deeper waters using a remotely operated vehicle. These data provide a first baseline for biodiversity and ecosystem studies, and for monitoring the long-term dynamics of Crozet benthic habitats facing natural and anthropogenic disturbances.
Disciplines :
biodiversity conservation (applied biology - ecology), ecology (applied biology - ecology), environmental sciences (sciences of the universe), marine & freshwater biology (sciences of the universe), oceanography (sciences of the universe)

General metadata

Data acquisition date : from 4 Nov 2021 to 24 Nov 2022
Data acquisition methods :
  • Observational data :
    MOVI: Manually and remotely Operated VIdeo surveys
    Video transects were performed in shallow waters (from 0 to 20 m depth) in scuba diving using a GoPro®HERO7 multiple cameras set-up, and in deeper waters (from 20 to 60 m depth) using the Remotely Operated Vehicle (ROV) SAAB Seaeye Cougar-XT Compact.

    CROCO: CROzet COmmunities data and images
    For each analysed image, faunal abundances and algal surface cover of each taxa were manually annotated using the online open-source software BIIGLE 2.0 (Benthic Image Indexing and Graphical Labelling Environment). Identification of faunal and algal taxa was performed at the lowest taxonomic level possible in collaboration with taxonomists.
Language : English (eng)
Formats : application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, image/jpeg, text/csv, video/mp4
Audience : General, Research, Policy maker

Coverages

Spatial coverage :

  • Ile de la Possession: latitude between 46° 19' 12" S and 46° 30' S, longitude between 51° 36' E and 51° 55' 12" E

Time coverage :

Taxonomic coverage :

  • Algae
    Phylum
    Chlorophyta WoRMS, Ochrophyta WoRMS, Rhodophyta WoRMS
    Classis
    Phaeophyceae WoRMS, Ulvophyceae WoRMS, Florideophyceae WoRMS
  • Benthic faunal invertebrates
    Phylum
    Annelida WoRMS, Arthropoda WoRMS, Brachiopoda WoRMS, Chordata WoRMS, Cnidaria WoRMS, Echinodermata WoRMS, Mollusca WoRMS, Porifera WoRMS
    Classis
    Polychaeta WoRMS, Malacostraca WoRMS, Rhynchonellata WoRMS, Ascidiacea WoRMS, Actinopterygii WoRMS, Anthozoa WoRMS, Hydrozoa WoRMS, Asteroidea WoRMS, Echinoidea WoRMS, Holothuroidea WoRMS, Ophiuroidea WoRMS, Bivalvia WoRMS, Gastropoda WoRMS, Demospongiae WoRMS
Publications :
  • Lelièvre Y., Motreuil S., Specq L., Marschal C., Dubois P., Wauters L., Guéné M. & Saucède, T. (2024). MEDUSA: Marine benthic Ecological Data from Underwater imagery Surveys of sub-Antarctic Crozet environments. Scientific Data 11, 613 (doi:10.1038/s41597-024-03460-4)
  • Lelièvre Y., Le Gall L., Dubois P. & Saucède T. (2024). Characterization of coastal habitats and marine benthic communities of the sub-Antarctic Crozet archipelago (Southern Ocean) using underwater imagery. (Submitted to Antarctic Science, March 2024)
  • Lelièvre Y., Lawnizack G., Ayoub N., d’Ovidio F., Armynot du Châtelet E., Zampolli M., Haralabus G., Courcot L., Collin, P-Y. & Saucède T. (2024). Can we infer coastal hydrodynamics from bedform patterns and sediment properties? A case study from the sub-Antarctic Crozet archipelago. (Submitted to Earth Surface Processes and Landforms, December 2023)
  • Lelièvre Y., Specq L., Lamy T., Boyé A., Downey R.V. & Saucède, T. (2023). Taxonomic and functional diversity of subtidal benthic communities associated with hard substrates at Crozet archipelago (sub-Antarctic, Southern Ocean). Frontiers in Marine Science 10, 1291038. (doi:10.3389/fmars.2023.1291038)
Projects and funders :

Data

20 files

HA04-Crozet-2021_BDM-T1x.zip

Published : 25/03/2024 13:56 Size : 6.28 GB

Description : Baie du Marin | Suspended-cables

HA04-Crozet-2021_BDM-T1.zip

Published : 25/03/2024 13:58 Size : 84.80 GB

Description : Baie du Marin | Along submarine cables

HA04-Crozet-2021_BDM-T2.zip

Published : 25/03/2024 13:58 Size : 42.16 GB

Description : Baie du Marin | 10 m south cables

HA04-Crozet-2021_BDM-T3x.zip

Published : 25/03/2024 13:58 Size : 10.52 GB

Description : Baie du Marin | Rock part of BDM-T3

HA04-Crozet-2021_BDM-T3.zip

Published : 25/03/2024 13:58 Size : 21.25 GB

Description : Baie du Marin | Across the bay

HA04-Crozet-2021_BDM-T4.zip

Published : 25/03/2024 13:58 Size : 5.79 GB

Description : Baie du Marin | Along submarine cables

HA04-Crozet-2021_BDM-T5.zip

Published : 25/03/2024 14:00 Size : 3.28 GB

Description : Baie du Marin | Along submarine cables

HA04-Crozet-2021_BDM-T6.zip

Published : 25/03/2024 14:00 Size : 6.09 GB

Description : Baie du Marin | Along the bay

HA04-Crozet-2021_BDM-T7.zip

Published : 25/03/2024 14:01 Size : 5.01 GB

Description : Baie du Marin | Along the bay

HA04-Crozet-2021_BDM-T8.zip

Published : 25/03/2024 14:02 Size : 2.65 GB

Description : Baie du Marin | Along the bay

HA04-Crozet-2021_CdS-T1.zip

Published : 25/03/2024 14:04 Size : 48.45 GB

Description : Crique du Sphinx | Along the bay

HA04-Crozet-2021_CdS-T2.zip

Published : 25/03/2024 14:05 Size : 56.14 GB

Description : Crique du Sphinx | Along the bay

HA04-Crozet-2021_CdS-T3.zip

Published : 25/03/2024 14:04 Size : 5.90 GB

Description : Crique du Sphinx | Along the south part of the bay

HA04-Crozet-2021_CdS-T4.zip

Published : 25/03/2024 14:04 Size : 8.22 GB

Description : Crique du Sphinx | Along the north part of the bay

HA04-Crozet-2022_BDM-T10.zip

Published : 25/03/2024 14:06 Size : 8.75 GB

Description : Baie du Marin | Suspended-cables

HA04-Crozet-2022_BDM-T11.zip

Published : 25/03/2024 14:08 Size : 2.61 GB

Description : Baie du Marin | Northern coast

HA04-Crozet-2022_BDM-T12.zip

Published : 25/03/2024 14:08 Size : 2.21 GB

Description : Baie du Marin | Northern coast

HA04-Crozet-2022_BDM-T13.zip

Published : 25/03/2024 14:09 Size : 4.32 GB

Description : Baie du Marin | Northern coast

HA04-Crozet-2022_BDM-T9.zip

Published : 25/03/2024 14:06 Size : 3.93 GB

Description : Baie du Marin | Central rock

Metadata_Table_MEDUSA.pdf

Published : 22/05/2024 10:34 Size : 95.25 kB

Description : METADATA

Record created 15 Mar 2024 by Yann Lelièvre.
Last modification : 22 May 2024.
Local identifier: FR-13002091000019-2024-03-15.

dat@uB

dat@uB is a sub-portal of dat@UBFC, a metadata catalogue for research data produced at UBFC.

Terms of use
Université de Bourgogne, Université de Franche-Comté, UTBM, AgroSup Dijon, ENSMM, BSB, Arts des Metiers