MEDUSA: Marine benthic Ecological Data from Underwater imagery Surveys of sub-Antarctic Crozet environments
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14 mars 2024
- ISIDORE Id: 10670/1.5cafec...
- FR-13002091000019-2024-03-15
- oai:search-data.ubfc.fr:FR-13002091000019-2024-03-15
- doi: 10.25666/DATAUBFC-2024-03-15
Ce document est lié à :
doi:10.1016/j.margeo.2025.107559
Ce document est lié à :
doi:10.1017/S0954102024000543
Ce document est lié à :
doi:10.1038/s41597-024-03460-4
Ce document est lié à :
doi:10.3389/fmars.2023.1291038
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biodiversity conservation ecology marine & freshwater biology oceanography environmental sciences Southern Ocean Subantarctic Crozet islands coastal habitats benthic ecosystem underwater imagery faunal and algal communities ecosystems monitoring environmental change biodiversité, conservation écologie biologie marine - hydrobiologie océanographie sciences de l'environnement Océan Austral Subantarctique Crozet, Îles habitats côtiers écosystème benthique imagerie sous-marine communautés fauniques et algales suivi des écosystèmes changement environnementalSujets proches
Land surveys Government surveys Tropes Speech, Figures of English language--Figures of speech ImageryCiter ce document
Yann Lelièvre, « MEDUSA: Marine benthic Ecological Data from Underwater imagery Surveys of sub-Antarctic Crozet environments », dat@UBFC, ID : 10.25666/DATAUBFC-2024-03-15
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Résumé
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.
