Classification of weed vegetation of arable land in the Czech Republic and Slovakia

• Zdeňka Lososová ^[2] ; Milan Chytrý ^[3] ; Šárka Cimalová ^[4] ; Zdenka Otýpková ^[3] ; Petr Pyšek ^[1] ; Lubomír Tichý ^[3]
  1. [1] Institute of Botany

     Institute of Botany

     Chequia

     
  2. [2] Institute of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic; Department of Biology, Faculty of Education, Masaryk University, Brno, Czech Republic
  3. [3] Institute of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
  4. [4] Department of Biology and Ecology, Faculty of Science, Ostrava University, Ostrava, Czech Republic

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• Localización: Folia geobotánica: A journal of plant ecology and systematics, ISSN-e 1874-9348, ISSN 1211-9520, Vol. 41, Nº 3, 2006, págs. 259-273
• Idioma: inglés
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• Resumen

  • Numerical classification of 2653 geographically stratified relevés of weed vegetation from the Czech and Slovak Republics was performed with cluster analysis. Diagnostic species were determined for each of the seven main clusters using statistical measures of fidelity. The classification reflected clear distinctions between lowland (mostly calcicole) and highland (mostly calcifuge) sites, spring and summer phenological stages, and cereals and root crops. The results of the cluster analysis were compared with traditional phytosociological units. Two clusters corresponded to calcifuge weed vegetation of theScleranthion annui alliance; one cluster represented the vegetation of root crops on moist soils of theOxalidion europaeae alliance; one cluster contained thermophilous weed vegetation of theCaucalidion lappulae alliance; two clusters included weed vegetation of root crops and of stubble fields, which can be assigned to theCaucalidion, Panico-Setarion,Veronico-Euphorbion andEragrostion alliances; one cluster included vernal weed vegetation in little disturbed habitats of theCaucalidion lappulae andScleranthion annui alliances. Our analysis did not support the concept of theSherardion andVeronico-Taraxacion alliances, which were included in earlier overviews of the vegetation units of the Czech Republic and Slovakia.