, Volume 73, Issue 1, pp 9–20 | Cite as

Environmental impact of a large-scale chemical elimination of Reynoutria spp. on the alluvium of the Morávka river – examination of vegetation changes in floodplain forests

  • Petr Halas
  • Pavel Švec
  • Jan Lacina
  • Milena Martinková
Original Article


An invasion of non-native plant species represents the most serious environmental problem threatening the biodiversity and changing the nature of the landscape. A chemical elimination is one of the methods used to fight neophytes. It was carried out in the study area of the Morávka River flowing beneath the Beskydy Mountains between 2007 and 2010. The elimination of Reynoutria spp. was implemented as a part of the ‘Preservation of alluvial forest habitats in the Morávka River basin’ project. The population of the invasive neophyte Reynoutria spp. was eliminated by using a combination of mechanical and chemical treatment. Roundup Biaktiv herbicide was used for the chemical elimination. We investigated the consequences of the areal chemical elimination of Reynoutria spp. on the herbaceous undergrowth of the forest of the alluvium of the Morávka River. A multivariate analysis was employed to examine responses of the spring herbaceous plant species and native and non-native summer plant species composition to the chemical treatment. The hypothesis that consequences of the chemical elimination are not reflected in the spring plant species composition, whereas the applications of the herbicide and their frequency is one of crucial factors for the variability of the summer plant species composition was confirmed. The chemical elimination affected plant species composition of the non-native plant species more significantly than the plant species composition of the native plant species. A higher frequency of herbicide application caused increased diversity of both native and non-native plant species, although more noticeably in the case of the latter ones.


Reynoutria Fallopia Alluvial forests Chemical kontrol Japanese knotweed Roundup Biaktiv Vegetation 



The article was funded by project no. UGN-S-RVO: 68145535.


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Copyright information

© Plant Science and Biodiversity Centre, Slovak Academy of Sciences 2018

Authors and Affiliations

  • Petr Halas
    • 1
  • Pavel Švec
    • 2
  • Jan Lacina
    • 1
  • Milena Martinková
    • 3
  1. 1.Institute of Geonics of the AS CR, v.v.i., Brno branchBrnoCzech Republic
  2. 2.Institut of Geoinformatics, VSB - Technical University of OstravaOstravaCzech Republic
  3. 3.Faculty of Horticulture Mendel University in BrnoLedniceCzech Republic

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