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Vegetation regeneration after removal of invasive plants
Pojslová, Lucie ; Münzbergová, Zuzana (advisor) ; Rumlerová, Zuzana (referee)
Invasive plants change local diversity and abundance of native plant species in the invaded area. However, changes are not visible only in vegetation, but also on single levels of abiotic and biotic characteristics of the invaded area. The aim of the thesis is not only to summarize current knowledge about the impact of invasive plants on vegetation, but also point out possible recovery of the vegetation and the direction of its succession after the removal of invasive plants. I present factors which limit the recovery of vegetation and types of management used for control of invasive species. I also describe biology, ecology and invasive history of fringed willowherb (Epilobium ciliatum spp. adenocaulon) which I want to use as a model plant for my future thesis. Finally, I mention experimental methods that are used for studying regeneration of invaded areas and the possibility of using invasive plants for regeneration of degraded soils.
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Habitat colonization by neophyte Impatiens glandulifera and estimate of factors limiting its spread
Rumlerová, Zuzana
Invasive spread of neophyte Impatiens glandulifera in central Europe started approximatelly eighty years ago. First records of dense cover stands come from belt stands in riparian habitats. The scale of invaded habitats and degree of the dominance of I. glandulifera is more diversified nowadays. This thesis is objected on the dominance and fertility of I. glandulifera within different habitat types and scale of invaded habitats in different parts of invaded range within Europe (i. e. in Czech Republic and Switzerland). The results show that the height and cover (substitutes for biomass and dominance) of this neophyte (i) correlates with the character of invaded vegetation (ii) relates to the degree of hemeroby (a measure of human impact) negativelly, and (iii), of course, both the growth and dominance are positively affected by nutrient content. Fertility does not differ among the types of invaded habitats, but goes up with the height of I. glandulifera and decreases with its cover. Invaded habitats comprises ruderal and riparian vegetation, but also wet maedows, forest clearances, beach and slope forests or weed vegetation.
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Habitat colonization by neophyte Impatiens glandulifera and estimate of factors limiting its spread
Rumlerová, Zuzana
Invasive spread of neophyte Impatiens glandulifera in central Europe started approximatelly eighty years ago. First records of dense cover stands come from belt stands in riparian habitats. The scale of invaded habitats and degree of the dominance of I. glandulifera is more diversified nowadays. This thesis is objected on the dominance and fertility of I. glandulifera within different habitat types and scale of invaded habitats in different parts of invaded range within Europe (i. e. in Czech Republic and Switzerland). The results show that the height and cover (substitutes for biomass and dominance) of this neophyte (i) correlates with the character of invaded vegetation (ii) relates to the degree of hemeroby (a measure of human impact) negativelly, and (iii), of course, both the growth and dominance are positively affected by nutrient content. Fertility does not differ among the types of invaded habitats, but goes up with the height of I. glandulifera and decreases with its cover. Invaded habitats comprises ruderal and riparian vegetation, but also wet maedows, forest clearances, beach and slope forests or weed vegetation.
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Mechanisms affecting plant-soil feedback in invasive species
Drtinová, Lucie ; Münzbergová, Zuzana (advisor) ; Rumlerová, Zuzana (referee)
Invasive plants worldwide cause considerable ecologic and economic damage. In order to prevent this, it is necessary to understand the mechanisms of plant invasion. One of the explanations of the success of invasive plants is their effective use of feedback interactions between plant and soil. Plant-soil feedback greatly affects the prosperity of a plant. While in most plants the intraspecific feedback is negative, invasive species show less negative or even positive intraspecific feedback. This may be due to the fact that invasive plants have the ability to alter soil composition to their advantage. This work deals with the individual components of plant-soil feedback, abiotic and biotic factors influencing the process, and summarizes their importance for plant invasion. The subject of the following diploma thesis will be a research on the significance of the individual biotic and abiotic components of the plant-soil feedback and assessing their importance for plant invasion. Key words: plant invasions, plant-soil feedback, mutualism, biotic factors, abiotic factors
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Vegetation regeneration after removal of invasive plants
Pojslová, Lucie ; Münzbergová, Zuzana (advisor) ; Rumlerová, Zuzana (referee)
Invasive plants change local diversity and abundance of native plant species in the invaded area. However, changes are not visible only in vegetation, but also on single levels of abiotic and biotic characteristics of the invaded area. The aim of the thesis is not only to summarize current knowledge about the impact of invasive plants on vegetation, but also point out possible recovery of the vegetation and the direction of its succession after the removal of invasive plants. I present factors which limit the recovery of vegetation and types of management used for control of invasive species. I also describe biology, ecology and invasive history of fringed willowherb (Epilobium ciliatum spp. adenocaulon) which I want to use as a model plant for my future thesis. Finally, I mention experimental methods that are used for studying regeneration of invaded areas and the possibility of using invasive plants for regeneration of degraded soils.
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