Přirozená a polopřirozená vegetace Vizovické pahorkatiny
| Title in English | Natural and semi-natural vegetation of the Vizovice Hills |
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| Authors | |
| Year of publication | 2009 |
| Type | Article in Periodical |
| Magazine / Source | Acta musealia Muzea jihovýchodní Moravy ve Zlíně |
| MU Faculty or unit | |
| Citation | |
| Field | Botany |
| Keywords | Vizovice Hills; Czech Republic; phytosociology; grassland; forest vegetation; gradient analysis; Ellenberg indicator values; soil pH; species richness |
| Description | Detailed phytosociological study of the Vizovice Hills was not done yet, therefore the aim of this paper is recognition of main vegetation types in this area and description of their relationships to environmental factors. I recorded 106 phytosociological relevés in 2003_2006. Relevés were divided by modified divisive algorithm Twinspan into seven groups of forest vegetation and six groups of non-forest vegetation. A comparison with the nearby White Carpathians revealed that vegetation of the Vizovice Hills lacks some thermophilous species and species of Orchidaceae, and the overall species richness is lower than in the White Carpathians. The main gradient in species composition following detrended correspondence analysis of forest and non-forest vegetation was interpreted using Ellenberg indicator values as a combined gradient of moisture, nutrient availability and soil reaction. Canonical correspondence analysis of the directly measured variables confirmed the importance of soil pH and slope. Significant relationship between soil pH and Ellenberg indicator values for soil reaction was revealed for both vegetation types, however, non-forest vegetation showed only weak correlation. Higher correlation coefficient was detected in a separate analysis of dry grasslands, while the largest discrepancy was in the group of abandoned wet meadows. The positive relationship between diversity and soil pH was found in forest vegetation and dry grasslands, but not in meadows. |
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