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Geographical origin of alien plants in the Czech Republic
Kopicová, Irena ; Chuman, Tomáš (advisor) ; Matějček, Tomáš (referee)
The topic of the proposed thesis is the geographical origin of non-native species of plants in the Czech Republic and it deals with non-native plants while identifying their phyto- areas. The causes of introduction, plant characteristics as well as ecological consequences, gains and dangers for the biodiversity in the Czech Republic are also assessed. The thesis is divided into two parts with first part dealing with a theoretical introduction in a form of a literary research on the geographic origin of non-original species of higher plants in the Czech Republic. Here, the basic terminology is discussed and so are specific issues. A chapter dealing with neo-phytes contains also a subsection on invasive plants, where it was necessary to stress their potential threat to ecosystems. Second part is devoted to the application of the topic in the education of geography by creating a work sheet and by defining main terminology for high school students. The aim is to encourage students to think about which plants are important, where they come from and why and how they reached us. Likewise, it is important that students could reflex on how non- native plants may affect the ecosystem in which they had been introduced.
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The spread of invasive neophytes in the riparian vegetation of the Kamenice river
Holzknechtová, Nikola ; Matějček, Tomáš (advisor) ; Bartoš, Jan (referee)
Watercourses and especially their riparian vegetation are habitats that are very sensitive to spreading of invasive plant species. Rivers create natural migration routes (corridors) and help propagules to spread quickly and easily. The theoretical part of this thesis is focused on plant invasions and covers also the most recent knowledge in the field of invasion ecology. In the practical part of this thesis the spread of invasive neophytes in the riparian vegetation of the Kamenice river in Northern Bohemia is described. The plant species were examined during the field survey along the entire stream of the Kamenice river. In total, common occurence of 7 invasive taxa were recorded, namely Impatiens parviflora, I. glandulifera, Reynoutria japonica, R. sachalinensis, R. bohemica, Solidago gigantea and S. canadensis. The distribution of observed taxa along the stream as well as on the banks was relatively uneven.
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Changes in the distribution of invasive neophytes in the riparan vegetation of the Berounka river
Randová, Nela ; Matějček, Tomáš (advisor) ; Lipský, Zdeněk (referee)
Riparian vegetation along the water courses is one of the places that are highly vulnerable to the spread of invasive alien plants. Water corridors allow their easy and rapid spread to new area. The diploma thesis occupies with changes in the distribution of the invasive neophytes in the riparian vegetation of the Berounka river during the years 2015-2018. The objective of this study was to find out how changes in the course of each year will be reflected and whether a certain trend of population development can be traced. In connection with this, the thesis occupies with the possible influence of extremely dry years 2015 and 2018 on the occurrence of invasive neophytes. Field research took place on the banks of the Berounka river from the village of Čilá near Skryje to the confluence of the Berounka and Vltava river in Prague-Lahovice during the summer months in 2015, 2016, 2017 and 2018. The riparian vegetation was divided into 500 ± 150 m long segments. There were 90 segments where the occurrence and abundance of 17 invasive neophytes were mapped. In total, occurrence of 14 taxons was registered. The most frequent taxons were Robinia pseudacacia, Impatiens glandulifera and Solidago sp. in the Berounka riverbank vegetation. The highest number of specimen was recorded for invasive neophyte...
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Biotopes associated with migration corridor valley of the Tichá Orlice river (Eastern Bohemia, Czech Republic)
Rejzek, Tomáš ; Kovář, Pavel (advisor) ; Černý, Tomáš (referee)
Biotopes associated with railway corridor in valley of the river Tichá Orlice (Eastern Bohemia, Czech Republic) ABSTRACT Expansion, invasion or decline of plant species caused by environmental changes belong to the most important phenomenons associated with vegetation cover development. In spite of their often initiation by human activities the above mentioned processes continue then spontaneously and uncontrollably. This study is concentrated to the effect of these mechanisms on the biotope structure along the Tichá Orlice River (Eastern Bohemia, Czech Republic) - in its lowland landscape segment of the canyon character where the second axis of the valley (river flow is the first one) is created by railway line more than 150 years of local history. The case study has the general aim: to treat the present and/or future impact of described trends to plant biota and the degree of its influencing. My diploma thesis investigates functional impact and mutual interaction of the two main migration pathways of exotic species - the T.Orlice river and the railway corridor. It presents qualitative and quantitative changes in plant components of local (semi)natural biotopes by mean of interrelationships among selected ecological groups of species (neophytes, expansive species, and ephemeroids). At the same time, this...
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Geographical origin of alien plants in the Czech Republic
Kopicová, Irena ; Chuman, Tomáš (advisor) ; Matějček, Tomáš (referee)
The topic of the proposed thesis is the geographical origin of non-native species of plants in the Czech Republic and it deals with non-native plants while identifying their phyto- areas. The causes of introduction, plant characteristics as well as ecological consequences, gains and dangers for the biodiversity in the Czech Republic are also assessed. The thesis is divided into two parts with first part dealing with a theoretical introduction in a form of a literary research on the geographic origin of non-original species of higher plants in the Czech Republic. Here, the basic terminology is discussed and so are specific issues. A chapter dealing with neo-phytes contains also a subsection on invasive plants, where it was necessary to stress their potential threat to ecosystems. Second part is devoted to the application of the topic in the education of geography by creating a work sheet and by defining main terminology for high school students. The aim is to encourage students to think about which plants are important, where they come from and why and how they reached us. Likewise, it is important that students could reflex on how non- native plants may affect the ecosystem in which they had been introduced.
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