Original title: Hummock Grasses on the Mt. Keprník: Contribution to the Earth Hummocks Origin Discussion
Authors: Hrádek, Mojmír
Document type: Papers
Conference/Event: Stav geomorfologických výzkumů v roce 2010 /11./, Praha (CZ), 2010-05-11 / 2010-05-13
Year: 2010
Language: eng
Abstract: Proofs submitted hitherto in evidence of earth hummocks cryogenic origin have been found as little probative. In presented poster, the attention was focused on the role of vegetation in hummocks origin. Some of hummocks are formed by dominant grass tussock with special habitus. Hummock grasses in the genus Carex sp., Eriophorium sp., resp. Juncus trifidi and Deschampsia sp. grow as an expanding dome, with green leaves in the centre and dead leaves at outer margin. Layer of dry leaves may be up to 5 cm thick and can serve as heat-insulation layer protecting frozen ground thawing in spring-time. Similar grass hummocks are typical not only for wind-swept alpine grasslands but also for low ranges and plains.
Keywords: earth hummocks; Hrubý Jeseník Mts.; hummock grasses
Project no.: CEZ:AV0Z30860518 (CEP)
Host item entry: Geomorfologický sborník 9, Stav geomorfologických výzkumů v r.2010, ISBN 978-80-86561-32-5

Institution: Institute of Geonics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0189352

Permalink: http://www.nusl.cz/ntk/nusl-41808


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Research > Institutes ASCR > Institute of Geonics
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