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Bahl, Alexis A; Lüskow, Florian; Konrad, Christian; Iversen, Morten Hvitfeldt; Pakhomov, Evgeny A: Southern Ocean zooplankton community abundance from JellyCam optical imaging, RV Polarstern expedition PS133/1, austral spring 2022 – JellyCam [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996149 (dataset in review)

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Abstract:
This dataset contains paired net-based and optical-imaging observations of meso- and macrozooplankton collected in the Atlantic sector of the Southern Ocean (45–67°S, 10–42°W) during RV Polarstern expedition PS133/1 in austral spring 2022. Net samples were collected with a Rectangular Midwater Trawl (RMT-8; mouth area 8 m², 4.5 mm mesh; 0–600 m) and an Isaacs-Kidd Midwater Trawl (IKMT; mouth area 2.5 m², 0.5 mm mesh; upper ~200 m) as double-oblique tows, yielding taxon-resolved volumetric abundances (individuals per 1000 m³) at 14 stations. In situ optical observations were obtained with JellyCam, a low-light imaging system mounted on the ROSINA (Remotely Observing in situ Camera for Aggregates) platform, providing depth-resolved (1-m) counts of 12 taxonomic groups at six stations, each profiled with a paired downcast and upcast. The data were generated to quantify the systematic underestimation of fragile gelatinous zooplankton by net-based sampling relative to optical imaging, and to compare community composition and vertical structure across gears. Salpa thompsoni size and developmental-stage data from the same net tows are archived separately (doi:10.1594/PANGAEA.973501); the ship CTD-Rosette physical oceanography is archived in doi:10.1594/PANGAEA.962314. Derived nearest-CTD environmental values matched to each biological sample are provided as supplementary material with the associated article rather than in this dataset.
Keyword(s):
gelatinous zooplankton; net sampling; optical imaging; Southern Ocean; zooplankton community
Related to:
Pakhomov, Evgeny A; Mole, Ryan; Bahl, Alexis A; von Appen, Wilken-Jon; Lüskow, Florian (2024): Characteristics of the thaliacean Salpa thompsoni population in the Atlantic sector of the Southern Ocean in early spring [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.973501
Tippenhauer, Sandra; Klaas, Christine; Kasten, Sabine (2023): Raw data of physical oceanography during RV POLARSTERN cruises PS133/1 and PS133/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.962314
Funding:
National Geographic Society (NGS), grant/award no. EC-92353R-22: Examining the world's largest migration in a changing Southern Ocean
Coverage:
Median Latitude: -50.994519 * Median Longitude: -34.328246 * South-bound Latitude: -54.181917 * West-bound Longitude: -41.793300 * North-bound Latitude: -49.051333 * East-bound Longitude: -9.986017
Date/Time Start: 2022-10-14T05:45:11 * Date/Time End: 2022-11-06T03:28:54
Minimum DEPTH, water: 247 m * Maximum DEPTH, water: 3792 m
Event(s):
PS133/1_3-12 * Latitude Start: -49.050910 * Longitude Start: -9.986350 * Latitude End: -49.051620 * Longitude End: -9.986240 * Date/Time Start: 2022-10-14T05:41:25 * Date/Time End: 2022-10-14T07:05:14 * Elevation Start: -3030.0 m * Elevation End: -3531.2 m * O2A Registry URI: https://registry.o2a-data.de/items/6074 * Campaign: PS133/1 (Island Impact) * Basis: Polarstern * Method/Device: Remotely ObServing INsitu camera for Aggregates (ROSINA) * Comment: Deployment depth: 600 m
PS133/1_8-8 * Latitude Start: -50.518150 * Longitude Start: -41.793140 * Latitude End: -50.518110 * Longitude End: -41.791940 * Date/Time Start: 2022-11-02T00:10:33 * Date/Time End: 2022-11-02T01:49:23 * Elevation Start: -1719.9 m * Elevation End: -1720.6 m * O2A Registry URI: https://registry.o2a-data.de/items/6074 * Campaign: PS133/1 (Island Impact) * Basis: Polarstern * Method/Device: Remotely ObServing INsitu camera for Aggregates (ROSINA) * Comment: Deployment depth: 600 m
PS133/1_9-15 * Latitude Start: -51.289790 * Longitude Start: -39.998920 * Latitude End: -51.289490 * Longitude End: -39.998880 * Date/Time Start: 2022-11-03T04:34:34 * Date/Time End: 2022-11-03T06:10:13 * Elevation Start: -3780.0 m * Elevation End: -3859.1 m * O2A Registry URI: https://registry.o2a-data.de/items/6074 * Campaign: PS133/1 (Island Impact) * Basis: Polarstern * Method/Device: Remotely ObServing INsitu camera for Aggregates (ROSINA) * Comment: Deployment depth: 600 m
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventBahl, Alexis A
2Depth, samplingDepth samplingmBahl, Alexis A
3DATE/TIMEDate/TimeBahl, Alexis AGeocode
4LATITUDELatitudeBahl, Alexis AGeocode
5LONGITUDELongitudeBahl, Alexis AGeocode
6Station labelStationBahl, Alexis A
7GearGearBahl, Alexis A
8DirectionDirectionBahl, Alexis A
9Time of dayTime of dayBahl, Alexis A
10Pair IDPair IDBahl, Alexis Astation pair
11DEPTH, waterDepth watermBahl, Alexis AGeocode
12Temperature, waterTemp°CBahl, Alexis A
13Speed, velocityvm/sBahl, Alexis A
14Depth, samplingDepth samplingmBahl, Alexis A
15Taxon/taxaTaxaBahl, Alexis A
16Taxon/taxa, unique identificationTaxa UIDBahl, Alexis A
17Taxon/taxa, unique identification (Semantic URI)Taxa UID (Semantic URI)Bahl, Alexis A
18Taxon/taxa, unique identification (URI)Taxa UID (URI)Bahl, Alexis A
19Number of individualsInd No#Bahl, Alexis A
20AreaAream2Bahl, Alexis Afield of view
21VolumeVolm3Bahl, Alexis Abin
22VolumeVolm3Bahl, Alexis Afield log
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1159188 data points

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