Meyer-Kaiser, Kirstin (2024): Megafauna density observed using OFOS at the station HAUSGARTEN-I, 2017-2022 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967215
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Abstract:
In 2017 - 2022, the Ocean Floor Observation System (OFOS) was used to survey epibenthic megafauna at the station HAUSGARTEN-I (79 N, 6 E, 1300 m depth). Data were collected every year except 2020 over a set transect. Images were collected automatically every 30 seconds, and additional images were collected manually when objects of interest came into view. For analysis, 90 automatically-recorded images were selected, with 30 each from the beginning, middle, and end of the transect. Images were individually viewed using the BIIGLE online image analysis tool, and all megafauna were annotated with identifications at the lowest possible taxonomic level. The area of each image was calculated using three parallel lasers mounted on the OFOS a known distance apart and visible in the images. Data represented here are the densities (individuals m^-2) for each species or morphotype in each image.
Supplement to:
Meyer-Kaiser, Kirstin; et al. (in review): Long-term and cyclical changes in Arctic deep-sea megafauna.
Related to:
Bergmann, Melanie (2018): Seabed photographs taken along OFOS profile PS107_43-12 during POLARSTERN cruise PS107. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.896657
Purser, Autun (2021): Seabed photographs taken along OFOS profile PS121_5-9 during POLARSTERN cruise PS121. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.929975
Project(s):
Changing Earth – Sustaining our Future (Helmholtz_ChangingEarth)
Coverage:
Median Latitude: 79.126984 * Median Longitude: 6.235550 * South-bound Latitude: 79.093029 * West-bound Longitude: 6.112693 * North-bound Latitude: 79.134081 * East-bound Longitude: 6.365520
Date/Time Start: 2017-08-13T02:48:00 * Date/Time End: 2022-06-16T02:43:45
Minimum Elevation: -1322.0 m * Maximum Elevation: -1231.0 m
Event(s):
MSM77_11-1 * Latitude: 79.132210 * Longitude: 6.261720 * Date/Time: 2018-09-20T01:07:00 * Elevation: -1290.0 m * Location: North Atlantic * Campaign: MSM77 * Basis: Maria S. Merian * Method/Device: Ocean Floor Observation System (OFOS)
MSM108_14-7 * Latitude Start: 79.134068 * Longitude Start: 6.112693 * Latitude End: 79.093029 * Longitude End: 6.365520 * Date/Time Start: 2022-06-15T17:35:31 * Date/Time End: 2022-06-16T02:43:45 * Elevation Start: -1254.0 m * Elevation End: -1231.0 m * Location: North Greenland Sea * Campaign: MSM108 (FRAM 2022) * Basis: Maria S. Merian * Method/Device: Ocean Floor Observation System (OFOS)
PS107_43-12 * Latitude: 79.132450 * Longitude: 6.268090 * Date/Time: 2017-08-13T02:48:00 * Elevation: -1322.0 m * Location: North Greenland Sea * Campaign: PS107 (ARK-XXXI/2) * Basis: Polarstern * Method/Device: Ocean Floor Observation System (OFOS)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
9450 data points
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