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Distribution of invasive neophytes in the riparian vegetation of the Berounka river
Randová, Nela ; Matějček, Tomáš (advisor) ; Romportl, Dušan (referee)
The river banks are very often colonized by invasive alien plants. The aim of this paper was to monitor the presence of invasive neophytes in riparian vegetation of the Berounka river and to compare the results with those of Boháčková (2007) from the year 2006. The research was completed during August in the year 2015. In every segment of the riparian vegetation were observed the presence and approximate population of seventeen invasive neophytes. In the riparian vegetation of the Berounka river were observed thirteen invasive neophytes on the whole. Impatiens glandulifera occured in the largest number of the segments, very closely followed by Robinia pseudacacia. Reynoutria sp. represented the largest population of individuals in the entire study area. The results of the comparison showed that the invasive neophytes are spreading to new locations but their population is not getting bigger. Key words: invasive neophytes, riparian vegetation, stream, changes in vegetation, monitoring of vegetation
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The spread of invasive neophytes in the riparian vegetation of the Úpa River
Tomeš, Miroslav ; Matějček, Tomáš (advisor) ; Flašarová, Kristýna (referee)
The presented bachelor thesis deals with the distribution of invasive neophytes in the riparian vegetation of the East Bohemian river Úpa and compares the findings with other streams. In the practical part, in the summer of 2020, the occurrence and abundance of 17 selected taxa of invasive neophytes in segments with a length of 500 m are monitored, for statistical evaluation merged into sections 2-3.5 km long. In almost 60 km of vegetation (in the sum of both banks) there are 7 taxa of invasive neophytes with different degrees of representation. Unequivocally dominant is in terms of the absolute number and share of occupied segments the taxon Impatiens parviflora occurring in almost the entire mapped area. Reynoutria sp., I. glandulifera and Solidago sp., which are concentrated in certain localities, can also be mentioned as numerous taxa. All segments are invaded. A more significant invasion process is taking place on the right bank of the river. In the Czech context, Úpa is one of the more invasively loaded streams. Keywords: invasive neophyte, riparian vegetation, the Úpa River, stream, monitoring of vegetation
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Distribution of invasive neophytes in the riparian vegetation of the Berounka river
Randová, Nela ; Matějček, Tomáš (advisor) ; Romportl, Dušan (referee)
The river banks are very often colonized by invasive alien plants. The aim of this paper was to monitor the presence of invasive neophytes in riparian vegetation of the Berounka river and to compare the results with those of Boháčková (2007) from the year 2006. The research was completed during August in the year 2015. In every segment of the riparian vegetation were observed the presence and approximate population of seventeen invasive neophytes. In the riparian vegetation of the Berounka river were observed thirteen invasive neophytes on the whole. Impatiens glandulifera occured in the largest number of the segments, very closely followed by Robinia pseudacacia. Reynoutria sp. represented the largest population of individuals in the entire study area. The results of the comparison showed that the invasive neophytes are spreading to new locations but their population is not getting bigger. Key words: invasive neophytes, riparian vegetation, stream, changes in vegetation, monitoring of vegetation
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