Polar Biology

, Volume 21, Issue 4, pp 220–227

Nutrient stress gradient in the bottom 5 cm of fast ice, McMurdo Sound, Antarctica

  • A. McMinn
  • J. Skerratt
  • T. Trull
  • C. Ashworth
  • M. Lizotte
ORIGINAL PAPER

DOI: 10.1007/s003000050356

Cite this article as:
McMinn, A., Skerratt, J., Trull, T. et al. Polar Biol (1999) 21: 220. doi:10.1007/s003000050356

Abstract

One-centimeter-scale vertical sampling of fast ice from McMurdo Sound, Antarctica reveals evidence of progressive nutrient limitation with distance above the ice/water interface. Over the bottom 6 cm photosynthetically active radiation increases by between 1.8 and 3 times, C:N increases from 6.8 to 19.8 and δ13C increases from −18 to −12. Fatty acid composition also changes with a consistent decline in polyunsaturated fatty acids and a rise in saturated fatty acids. These factors all suggest severe and progressive nutrient limitation with distance from the ice/water interface.

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • A. McMinn
    • 1
  • J. Skerratt
    • 1
  • T. Trull
    • 2
  • C. Ashworth
    • 3
  • M. Lizotte
    • 4
  1. 1.Institute of Antarctic and Southern Ocean Studies, University of Tasmania, Box 252–77, Hobart 7001, Tasmania, Australia e-mail: secretary@iasos.utas.edu.auAU
  2. 2.Antarctic CRC, University of Tasmania, Box 252–80, Hobart, Tasmania 7001, AustraliaAU
  3. 3.Department of Plant Science, University of Tasmania, Box 252–55, Hobart, Tasmania 7001, AustraliaAU
  4. 4.Department of Biological Sciences, University of Wisconsin, 800 Algoma Blvd, Oshkosh, WI 54901, USAUS