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Citation
Swadling, K. (2019) KAxis Zooplankton isotopes - data collected from the K-Axis voyage of the Aurora Australis, 2016, Ver. 1, Australian Antarctic Data Centre - doi:10.4225/15/5a8232b68d40f, Accessed: 2021-05-06
Title
KAxis Zooplankton isotopes - data collected from the K-Axis voyage of the Aurora Australis, 2016
Data Centre
Australian Antarctic Data Centre, Australia
DOI
doi:10.4225/15/5a8232b68d40f
Created Date
2018-01-12
Revision Date
2019-10-16
Parent record
None

Description

Krill, salps and pteropods were collected with an RMT8 net during the K-Axis cruise. Specimens were removed from the samples, measured and frozen at -20C until ready for analysis in Hobart. Individuals of known species were dried at -60C, ground to a fine powder, encapsulated into tin cups and analysed with an ICP-MS in the Central Science Laboratories, University of Tasmania. Samples were analysed for delta15N and delta13C. The salp was the common Southern Ocean species Salpa thompsoni and the krill were Euphausia superba, E. triacantha, E. frigida and Thysanoessa macrura. A small number (2) of the siphonphore Diphyes antarctica were also analysed. Pteropods analysed included both shelled (thecosomes) and naked (gymnosomes) pteropods.

Columns E-O in the Pteropods worksheet in the spreadsheet are expressed as ratios.

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Purpose

The stable isotope analysis of zooplankton was performed as part of the studies designed to understand trophic interactions in the planktonic food web over the Kerguelen Plateau. In particular, we wished to understand (i) the trophic positions of key krill species and how they interacted with Salpa thompsoni and (ii) the roles of naked and shelled pteropods in the food web.

Quality

No problems with data collection or analysis.

Access

The data are publicly available for download from the provided URL.

Temporal Coverages

Spatial Coverages

Science Keywords

Additional Keywords

  • K-AXIS
  • PTEROPODS
  • KERGUELEN-AXIS

Locations

  • GEOGRAPHIC REGION > POLAR
  • OCEAN > SOUTHERN OCEAN > KERGUELEN PLATEAU
  • CONTINENT > ANTARCTICA

Platforms

  • R/V Aurora Australis

Instruments

  • Inductively Coupled Plasma Mass Spectrometer

Researchers

  • swadling, kerrie (INVESTIGATOR,TECHNICAL CONTACT,DIF AUTHOR)

Use Constraints

Please contact data custodian if you wish to use these data

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4331_Zooplankton_isotopes when using these data.

Creative Commons License