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Nitrogen acquisition, assimilation and allocation in plants in Subantarctic and Antarctic ecosystems
Entry ID: ASAC_773

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Abstract: In this study the nitrogen sources of plants were investigated for Macquarie Island in an ecosystem influenced by large amounts of animal-derived nitrogen. Different plant communities were studied in close and intermediate proximity to animal sites and at remote sites. Fluxes of animal derived nitrogen and plant nitrogen sources were estimated using 15N natural abundance. Furthermore we examined whether fossil peat retained past plant isotopic composition by cross-correlating two Holocene sites, which had strong fossil records with peat and extant plant delta 15N signatures.
Present data and archived peats collected for a previous project were sampled.
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Geographic Coverage
Spatial coordinates   
  N: -54.61   S: -54.61   E: 158.86   W: 158.86

Data Set Citation
Dataset Originator/Creator: Stewart, G.
Dataset Title: Nitrogen acquisition, assimilation and allocation in plants in Subantarctic and Antarctic ecosystems
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2013-02-21
Dataset Publisher: Australian Antarctic Data Centre
Online Resource:
Temporal Coverage
Start Date: 1994-09-01
Stop Date: 1996-03-31
Quality Dates provided in temporal coverage are approximate only.

See the attached papers for more information.
Access Constraints A word document containing some summary data is available for download at the provided URL. PDF copies of the referenced papers are also available for download by Australian Antarctic Division personnel only.
Use Constraints This data set conforms to the PICCCBY Attribution License

Please follow instructions listed in the citation reference provided at when using these data.
Data Set Progress
Data Center
Australian Antarctic Data Centre, Australia Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: metadata at
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia
Distribution Media: HTTP
Distribution Size: 176 kb
Distribution Format: Word
Fees: Free

Distribution Media: HTTP
Distribution Size: 220 kb
Distribution Format: pdf
Fees: Free
Erskine, P.D., Bergstrom, D.M., Schmidt, S., Stewart, G.R., Tweedie, C.E., and Shaw, J.D. (1998), Subantarctic Macquarie Island - a model ecosystem for studying animal-derived nitrogen sources using 15 N natural abundance., Oecologia, 117, 187-193

Bergstrom, D.M., Stewart, G.R., Selkirk, P.M. and Schmidt S (2001), 15N Natural abundance of fossil peat reflects past vegetation nitrogen sources and ecosystem processes on subantarctic Macquarie Island., Oecologia, 130, 309-314
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Creation and Review Dates
DIF Creation Date: 2000-08-07
Last DIF Revision Date: 2017-01-26
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