Abstract
The effect of traditional management on the initial phase of invasion into mesic mown meadows was studied in the Křivoklátsko protected landscape area in Central Bohemia, the Czech Republic. In 1996, rhizome fragments of alien species native to Asia, i. e.Reynoutria japonica, R. sachalinensis and their hybridR. xbohemica were planted in experimental plots and their establishment recorded. Established plants were then subjected to the following six treatments which simulated the management practices traditionally used in the study area: mowing twice a year, grazing by goats and sheep separately at two different intensities, and a control plot. Plant survival was recorded in the two years following planting. In order to compare the effect of the growing period, the experiment withR. japonica was conducted in two subsequent years (1995 and 1996) thus allowing observations over three years on this species. The experiment was carried out in two sites (meadows), with three blocks of treatments established in each. Significantly better establishment was found inR. japonica andR. xbohemica than inR. sachalinensis. Survival of all three taxa was negatively effected by all the management treatments applied (P<0.001). In control plots with plants of all three taxa, there was virtually no mortality during the growing seasons of either year and the number of surviving plants decreased only in the winter. In the former two species, 38.5 ± 19.4% of plants survived the first winter, the corresponding figure for the latter being only 7.2 ± 6.1%. It can be concluded that traditional management provided it is applied continuously may represent an effective barrier against the invasion of theReynoutria species. Once ceased, the potential for invasion increases and if invasion occurs, special control measures are required to eliminate the invading plants effectively.
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Brabec, J., Pyšek, P. Establishment and survival of three invasive taxa of the genusReynoutria (Polygonaceae) in mesic mown meadows: A field experimental study. Folia Geobot 35, 27–42 (2000). https://doi.org/10.1007/BF02803085
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DOI: https://doi.org/10.1007/BF02803085