Present address: Botanical Institute, Academy of Sciences of the Czech Republic, CZ-25243 Pruhonice, Czech Republic
Invasion by Heracleum mantegazzianum in different habitats in the Czech Republic
Article first published online: 24 FEB 2009
1995 IAVS - the International Association of Vegetation Science
Journal of Vegetation Science
Volume 6, Issue 5, pages 711–718, October 1995
How to Cite
Pyšek, P. and Pyšek, A. (1995), Invasion by Heracleum mantegazzianum in different habitats in the Czech Republic. Journal of Vegetation Science, 6: 711–718. doi: 10.2307/3236442
- Issue published online: 24 FEB 2009
- Article first published online: 24 FEB 2009
- Received 19 January 1995;; Revision received 23 May 1995;; Accepted 29 June 1995.
- Alien plant species;
- Community invasibility;
- Landscape section;
- Plant trait;
- Site condition;
- Species diversity;
- Tutin et al. (1964–1980)
Abstract. Heracleum mantegazzianum, a tall forb from the western Caucasus invaded several different habitats in the Czech Republic. The relation between invasion success and type of recipient habitat was studied in the Slavkovskù les hilly ridge, Czech Republic. The vegetation of 14 habitat types occurring in an area of ca. 25 km2 was analysed using phytosociological relevés, and the invasion success of Heracleum (in terms of number of localities, area covered and proportion of available area occupied) was recorded separately in each of them. Site conditions were expressed indirectly using Ellenberg indicator values. The hypothesis tested was that Heracleum spreads in the majority of vegetation types regardless of the properties of the recipient vegetation.
Community invasibility appeared to be affected by site conditions and the composition of the recipient vegetation. The species is not found in acidic habitats. Disturbed habitats with good possibilities of dispersal for Heracleum seeds are more easily invaded. Communities with a higher proportion of phanerophytes and of species with CS (Competitive/Stresstolerating) strategy were more resistant to invasion. The invasion success was bigger in sites with increased possibilities of spread for Heracleum diaspores. Communities invaded by Heracleum had a lower species diversity and a higher indicator value for nitrogen than not-invaded stands. It appears that species contributing to community resistance against invasion of Heracleum, or capable of persisting in Heracleum-invaded stands, have similar ecological requirements but a different life strategy to the invader.