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Seasonal Trends in Nitrogen Status of Antarctic Lichens
Citation
Hovenden, MJ, Seasonal Trends in Nitrogen Status of Antarctic Lichens, Annals of Botany, 86, (4) pp. 717-721. ISSN 0305-7364 (2000) [Refereed Article]
DOI: doi:10.1006/anbo.2000.1248
Abstract
The thallus nitrogen (N) concentration of two dominant macrolichens of continental Antarctica (Usnea sphacelata and Umbilicaria decussata) was estimated each month for I year on a low rounded knoll on Clark Peninsula, Windmill Islands, Wilkes Land, Antarctica. Thallus N was significantly higher in Umbilicaria decussata than in Usnea sphacelata and varied according to site. During the winter months, when the lichens were metabolically inactive, thalli gradually accumulated N. At the onset of warmer conditions, thallus N content fell dramatically in both species, with the timing of the decline being related to microclimatic conditions. The strongly seasonal pattern of metabolic activity in these species is reflected in their nitrogen relations. (C) 2000 Annals of Botany Company.
Item Details
Item Type: | Refereed Article |
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Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Plant physiology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the environmental sciences |
UTAS Author: | Hovenden, MJ (Professor Mark Hovenden) |
ID Code: | 20493 |
Year Published: | 2000 |
Web of Science® Times Cited: | 4 |
Deposited By: | Plant Science |
Deposited On: | 2000-08-01 |
Last Modified: | 2011-08-04 |
Downloads: | 0 |
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