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

journal contribution
posted on 2023-05-16, 11:49 authored by Andrew McMinnAndrew McMinn, Skerratt, J, Trull, T, Ashworth, CM, Lizotte, M
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 corn position 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.

History

Publication title

Polar Biology

Volume

21

Issue

4

Pagination

220-227

ISSN

0722-4060

Department/School

Institute for Marine and Antarctic Studies

Publisher

Springer-Verlag

Place of publication

NY, USA

Repository Status

  • Restricted

Socio-economic Objectives

Biodiversity in Antarctic and Southern Ocean environments

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