Shimabukuro, Mauricio; Zeppilli, Daniela; Wenzhöfer, Frank; Glud, Ronnie N (2024): Meiofauna densities and respiration in the Atacama Trench region [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971924
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2024-08-26 • DOI registered: 2024-09-24
Abstract:
Meiofauna samples were collected during SO261 in 2018 using a multi-corer at six hadal sites along Atacama Trench axis, two abyssal sites on each side of the trench and on the bathyal site on the Chilean slope. Sediment cores were sliced at a depth resolution of 1 cm down to 5 cm depth and the layers were fixed in 4% buffered formalin. Sediment samples were sieved and rinsed on a 20 µm mesh size for meiofauna analyses. Organisms were counted using a stereomicroscope and measured using a light microscope.
Related to:
Berg, Peter; Risgaard-Petersen, Nils; Rysgaard, Søren (1998): Interpretation of measured concentration profiles in sediment pore water. Limnology and Oceanography, 43(7), 1500-1510, https://doi.org/10.4319/lo.1998.43.7.1500
Glud, Ronnie N; Wenzhöfer, Frank (2024): Oxygen microprofiles measured in situ in sediments of Atacama Trench and adjacent abyssal plains [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967174
Shimabukuro, Mauricio; Zeppilli, Daniela; Leduc, Daniel; Wenzhöfer, Frank; Berg, Peter; Rowden, Ashley A; Glud, Ronnie N (2022): Intra- and inter-spatial variability of meiofauna in hadal trenches is linked to microbial activity and food availability. Scientific Reports, 12, 4338, https://doi.org/10.1038/s41598-022-08088-1
Funding:
Danish National Research Foundation (DG), grant/award no. DNRF145: Danish Center for Hadal Research, HADAL
Coverage:
Median Latitude: -22.643689 * Median Longitude: -71.265900 * South-bound Latitude: -24.285000 * West-bound Longitude: -71.620700 * North-bound Latitude: -20.326200 * East-bound Longitude: -70.838050
Date/Time Start: 2018-03-06T07:41:00 * Date/Time End: 2018-03-28T17:17:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.045 m
Event(s):
SO261_9-1 (Site 1) * Latitude: -23.820833 * Longitude: -70.838050 * Date/Time: 2018-03-06T07:41:00 * Elevation: -2544.6 m * Campaign: SO261 * Basis: Sonne_2 * Method/Device: MultiCorer (MUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Optional event label | Event 2 | ||||
| 3 | Latitude of event | Latitude | ||||
| 4 | Longitude of event | Longitude | ||||
| 5 | Elevation of event | Elevation | m | |||
| 6 | Date/Time of event | Date/Time | ||||
| 7 | Depth, top/min | Depth top | m | Shimabukuro, Mauricio | ||
| 8 | Depth, bottom/max | Depth bot | m | Shimabukuro, Mauricio | ||
| 9 | DEPTH, sediment/rock | Depth sed | m | Shimabukuro, Mauricio | Geocode | |
| 10 | Meiofauna, abundance | Meiof | #/10 cm3 | Shimabukuro, Mauricio | Stereo microscopy | Meiofauna individuals were counted in a known sediment volume using a stereomicroscope to derive the volume-specific meiofauna density. |
| 11 | Oxygen consumption, volume-specific | O2 con vol | µmol/cm3/day | Shimabukuro, Mauricio | Oxygen microsensor, Clark type (Revsbech, 1989) | Oxygen concentration microprofiles measured in situ in deep-sea sediments were analyzed with the program PROFILE 1.0 (Berg et al. 1998) to derive volume-specific oxygen consumption rates. The oxygen microprofiles are presented in Glud et al. 2021 (https://doi.org/10.1594/PANGAEA.967174). |
| 12 | Meiofauna, respiration rate, oxygen | Meiof Resp O2 | µmol/cm3/day | Shimabukuro, Mauricio | Light microscope | Meiofauna respiration (R) was estimated based on the allometric equation R = 7.4*10^-3 * W^-0.24 where W is the body weight. Body weight was derived from measuring the length and maximum width to calculate the body volume. |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
225 data points