CTD Camera images analysis - collected from the TEMPO voyage of the RV Investigator, 2021

• Other Authors: AADC (owner), AADC, DATA OFFICER (distributor), AADC, DATA OFFICER (custodian), AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith), Australian Antarctic Data Centre (publisher), Australian Antarctic Division (sponsor), BRASIER, MADELEINE JULIE (collaborator), BRASIER, MADELEINE JULIE (author), SUTER, LEONIE (hasPrincipalInvestigator), Suter, L. and Brasier, M.J. (originator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; biota; EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > EUPHAUSIIDS (KRILL); BRYOZOANS/MOSS ANIMALS; DECAPODS; ECHINODERMS; BENTHIC BIODIVERSITY; BENTHOS; TAXONOMY; IMAGE ANALYSIS; BIIGLE; CANON HFG10; CTD ROSSETTE; RV INVESTIGATOR; CAMERAS; CTD > Conductivity; Temperature; Depth; Ships; AMD/AU; AMD; CEOS; GEOGRAPHIC REGION > POLAR; OCEAN > SOUTHERN OCEAN; Antarc*; Antarctic; Southern Ocean
• Online Access: https://researchdata.edu.au/ctd-camera-images-investigator-2021/2927005

Progress Code: onGoing This dataset contains raw and annotated images from the CTD camera deployed during the TEMPO voyage. Raw images were annotated by Maddie Brasier in Biigle as per the Antarctic Seafloor Annotated Imagery Database (AS-AID) (Gros et al. 2023, Jansen et al. 2023). Two annotation catalogues were used including the ‘CATAMI – mobile and indicator species’ in which labels were based on the CATAMI classification scheme (Althaus et al., 2015) and, ‘VME morpho-taxa’ based on the CCAMLR guide to VME indicator taxa (CCCAMLR, 2009). Counts and percentage cover data of the identified species per image are given. Metadata files required for Biigle uploads included. Summary document of image processing included. Most krill studies focus on the epipelagic zone (surface to ~250m), but recent observations indicate that they can also exist within the abyssal zone. As a part of the TEMPO voyage a deep sea camera mounted to the CTD rosette was used to observe krill at the ocean floor. As a result seafloor images were collected during every full depth CTD deployment during the voyage. In these analyses the images were used to identify benthic fauna, the taxa present will be compared to the corresponding eDNA samples collected during the same CTD deployment. Taken from the summary document of image processing: Images were collected during CTD deployments via a Canon HFG10 mounted on to frame of the rosette. The camera and lights were switched on 25 m above the seafloor during the CTD decent and captured a still image every 10 seconds. At this point the focus was set to infinity. The CTD was lowered to 3-5 m from the seabed, after 2 minutes the focus was adjusted to 1 m. For each CTD deployment the highest quality image/s were selected for image analysis. Out of focus images were discarded, for some deployments multiple images were used as the if they captured different areas of the seabed and encompass as must potential benthic diversity as possible. Whilst the ship was as stationary as possible there was enough ...