Laakmann, Silke; Auel, Holger (2010): (Table 2) Stable carbon and nitrogen isotope ratios and molar C/N ratio for euchaetid and aetideid copepods during POLARSTERN cruise ANT-XXIII/5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.848509, Supplement to: Laakmann, S; Auel, H (2009): Longitudinal and vertical trends in stable isotope signatures (d13C and d15N) of omnivorous and carnivorous copepods across the South Atlantic Ocean. Marine Biology, 157(3), 463-471, https://doi.org/10.1007/s00227-009-1332-9
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Abstract:
Stable isotope (SI) ratios of carbon (d13C) and nitrogen (d15N) were measured in omnivorous and carnivorous deep-sea copepods of the families Euchaetidae and Aetideidae across the Atlantic sector of the Southern Ocean to establish their trophic positions. Due to high and variable C/N ratios related to differences in lipid content, d13C was corrected using a lipid-normalisation model. d15N signals ranged from 3.0-6.9 per mil in mesopelagic species to 7.0-9.5 per mil in bathypelagic congeners. Among the carnivorous Paraeuchaeta species, the epi- to mesopelagic species Paraeuchaeta antarctica had lower d15N values than the mesopelagic P. rasa and bathypelagic P. barbata. The same trend was observed among omnivorous Aetideidae, but was not significant. In the most abundant species P. antarctica, individuals from the western Atlantic had higher d13C and d15N values than specimens at the eastern stations. These longitudinal changes in d13C and d15N values were attributed to regional differences in hydrography and sea surface temperature (SST), in particular related to a northward extension of the Antarctic Polar Front (APF) at the easternmost stations. The results indicate that even in a mesopelagic carnivorous species, the changes in surface stable isotope signatures are pronounced.
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -51.605175 * Median Longitude: -26.361958 * South-bound Latitude: -52.295800 * West-bound Longitude: -53.895500 * North-bound Latitude: -51.469800 * East-bound Longitude: -2.084600
Date/Time Start: 2006-04-16T14:42:00 * Date/Time End: 2006-04-25T11:35:00
Minimum Elevation: -4838.0 m * Maximum Elevation: -2097.0 m
Event(s):
PS69/342-1 * Latitude: -52.295800 * Longitude: -53.895500 * Date/Time: 2006-04-16T14:42:00 * Elevation: -2097.0 m * Campaign: ANT-XXIII/5 (PS69) * Basis: Polarstern * Method/Device: Multiple opening/closing net (MSN)
PS69/343-1 * Latitude: -51.856500 * Longitude: -47.729600 * Date/Time: 2006-04-17T13:16:00 * Elevation: -2501.0 m * Campaign: ANT-XXIII/5 (PS69) * Basis: Polarstern * Method/Device: Multiple opening/closing net (MSN)
PS69/344-1 * Latitude Start: -51.481900 * Longitude Start: -40.935200 * Latitude End: -51.469800 * Longitude End: -40.918000 * Date/Time Start: 2006-04-18T13:04:00 * Date/Time End: 2006-04-18T14:27:00 * Elevation Start: -3559.0 m * Elevation End: -3566.0 m * Campaign: ANT-XXIII/5 (PS69) * Basis: Polarstern * Method/Device: Multiple opening/closing net (MSN)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Laakmann, Silke | |||
| 2 | Date/Time of event | Date/Time | Laakmann, Silke | |||
| 3 | Latitude of event | Latitude | Laakmann, Silke | |||
| 4 | Longitude of event | Longitude | Laakmann, Silke | |||
| 5 | Elevation of event | Elevation | m | Laakmann, Silke | ||
| 6 | Station label | Station | Laakmann, Silke | |||
| 7 | Species | Species | Laakmann, Silke | |||
| 8 | Life stage | Life stage | Laakmann, Silke | |||
| 9 | Depth, top/min | Depth top | m | Laakmann, Silke | ||
| 10 | Depth, bottom/max | Depth bot | m | Laakmann, Silke | ||
| 11 | δ13C | δ13C | ‰ PDB | Laakmann, Silke | Element analyser isotope ratio mass spectrometer (EA-IRMS) | uncorrected |
| 12 | δ13C | δ13C | ‰ PDB | Laakmann, Silke | Element analyser isotope ratio mass spectrometer (EA-IRMS) | lipid corrected |
| 13 | δ15N | δ15N | ‰ air | Laakmann, Silke | Element analyser isotope ratio mass spectrometer (EA-IRMS) | |
| 14 | Carbon/Nitrogen ratio | C/N | Laakmann, Silke | |||
| 15 | Number of individuals | Ind No | # | Laakmann, Silke |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
488 data points