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Environmental factors influenting species composition of acidophilous grasslands patches in agricultural landscape
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SYSNO ASEP 0386357 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Environmental factors influenting species composition of acidophilous grasslands patches in agricultural landscape Author(s) Halas, Petr (UGN-S) RID Number of authors 1 Source Title Moravian Geographical Reports. - : Ústav geoniky AV ČR, v. v. i. - ISSN 1210-8812
Roč. 20, č. 1 (2012), s. 16-27Number of pages 12 s. Publication form www - www Language eng - English Country CZ - Czech Republic Keywords acidophilous grasslands ; hemeroby ; patch isolation ; patch area ; regression trees Subject RIV DE - Earth Magnetism, Geodesy, Geography Institutional support UGN-S - RVO:68145535 Annotation Acidophilous grasslands in the south-western part of the Czech-Moravian Highlands were substantially reduced in the 20th century. This paper addresses these patches in terms of the impact of their size on the species composition, isolation and the quality of the surrounding land cover. Species recorded in the acidophilous grasslands are categorized by hemeroby, life strategy, origin, and life form. Multivariate gradient analysis revealed that of the local variables considered, the greatest parts in the variability of species data were played by soil pH and shape of the patch; some species groups were also substantially influenced by the micro-relief. The importance of the surrounding land cover for the species composition was studied by means of regression trees. A presumption that, apart from local factors such as soil pH and micro-relief, the species composition is significantly influenced by the heterogeneity of the surrounding landscape was confirmed. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2013 Electronic address http://www.geonika.cz/EN/research/ENMgr/MGR_2012_01.pdf
Number of the records: 1