par Lelièvre, Yann;Motreuil, Sébastien;Specq, Léa;Marschal, Christian;Dubois, Philippe 
;Wauters, Lisa;Guéné, Mathilde;Saucède, Thomas
Référence Scientific Data, 11, 1, 613
Publication Publié, 2024-12
;Wauters, Lisa;Guéné, Mathilde;Saucède, ThomasRéférence Scientific Data, 11, 1, 613
Publication Publié, 2024-12
Article révisé par les pairs
| 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. |
