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Pattern and Process in alpine vegetation and landforms at Hill One, Southern Range, Tasmania

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Lynch, AJJ and Kirkpatrick, JB (1995) Pattern and Process in alpine vegetation and landforms at Hill One, Southern Range, Tasmania. Australian Journal of Botany, 43 (6). pp. 537-554. ISSN 0067-1924

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Abstract

Hill One is a wind-exposed, alpine environment in southern Tasmania. The prevailing wind-stream is westerly. However, high intensity south-westerly winds associated with frost events appear to control the patterning of fjaeldmark. These winds cause necrosis of prostrate Richea scoparia and cushion plants on their south-western side and induce migration of individual plants in a north-easterly direction. Fjaeldmark is confined to the exposed mountain summit and terrace and step treads. Mosaic cushion heath occurs in more exposed and poorly drained areas than other heath communities. The horizontally bedded sediments of Hill One have been worked by erosional and depositional agents into a complex morphology. Large terraces and non-sorted steps are likely to have formed from altiplanation processes, that is, differential erosion of interbedded sediments, with accumulation of erosional debris at the foot of the risers. Depositional lobes and erosional washout features are actively forming in localised areas of concentrated drainage. The distribution of plant communities is closely associated with rockiness, wind exposure and drainage.

Item Type: Article
Journal or Publication Title: Australian Journal of Botany
Page Range: pp. 537-554
ISSN: 0067-1924
Identification Number - DOI: 10.1071/BT9950537
Additional Information: The definitive version is available online at http://www.publish.csiro.au/nid/65.htm
Date Deposited: 29 Nov 2007 04:53
Last Modified: 18 Nov 2014 03:25
URI: http://eprints.utas.edu.au/id/eprint/2542
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