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New data on stands of fern Athyrium distentifolium in the Beskydy Mts.

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Author(s): Ivan Tůma | Petr Holub | Karel Fiala

Journal: Časopis Beskydy
ISSN 1803-2451

Volume: 1;
Issue: 1;
Start page: 93;
Date: 2008;
Original page

Keywords: decomposition | leaf growth parameters | N fertilization | population structure

ABSTRACT
New data were obtained on behaviour of Athyrium distentifolium fern occurring at different altitudes of the National Natural Reserve Kněhyně-Čertův Mlýn in the Moravian-Silesian Beskydy Mts. Studied populations of fern A. distentifolium represented young populations (lower size categories of genet are presented more frequently), established at the lower altitude particularly. The effect of higher input of nitrogen on biomass and morphometric leaf parameters of fern resulted in a greater allocation of biomass into supporting parts of fern leaves (fronds) which can play an important role in resorption of nutrients at the end of the growing season. The decomposition rate of native A. distentifolium litter was approximately the same (29--30%) at both nitrogen availabilities. However, decomposition rate of cellulose was two times greater in fern stands than in adjacent spruce stands without ferns.
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