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Alien species of plants and biotic resistence of invaded communities
Kubátová, Michaela ; Dostál, Petr (advisor) ; Frouz, Jan (referee)
Michaela Kubátová Alien species of plants and biotic resistence of invaded communities This study is about problems and questions of alien plants and their relation to native communities in their new range. Ecologists are increasingly aware that soil organisms may affect plant communities because they are part of the processes that affect them. The soil organisms may affect the success of alien species invasion. Each species of plants differ in interaction with soil organisms, these interactions can result in specific feedback that will influence the future growth of other plants. According to Darwin's naturalization hypothesis related species should have similar enemies. This implies less successful invasion of alien plants at home with relatives. The practical part consists of two experiments. Using plant-soil feedback I studied under controlled conditions the importance of kinship of native plants and their soil organisms on the growth of three species of alien plants Impatiens, Parviflora, Stenactis annua and Epilobium ciliatum. There were used soil samples from localities with related and unrelated species; the soil was used as inoculums for growing first-generation plants, where there were original related, unrelated and alien plants. In the second phase only alien species were grown. Part of...
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Effect of plant invasions on arbuscular mycorrhiza symbiosis
Cihlářová, Lucie ; Kohout, Petr (advisor) ; Štajerová, Kateřina (referee)
People have been travelling for centuries, together with accompanying animals and plants from their fatherlands. This transfer can be either conscious or accidental. In both cases, the introduced species enter new interactions with local organisms which can lead even to a change of functioning of whole ecosystems. Arbuscular mycorrhizal symbiosis is one of the most important and widespread symbiotic relationships of vascular plants and soil fungi, known from approximately 80 % terrestrial plant families. The symbiosis han an irreplaceable role for host plants in uptake of mineral nutrients. An introduction of invasive plants to non-native biotopes can have a significant influence on the fragile balance between the symbionts, which can subsequently influence whole ecosystem. This Bachelor's thesis is focused on the arbuscular mycorrhizal symbiosis, the characteristic of plant invasions and its influence on AM fungi in invaded areas.
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Alien species of plants and biotic resistence of invaded communities
Kubátová, Michaela ; Dostál, Petr (advisor) ; Frouz, Jan (referee)
Michaela Kubátová Alien species of plants and biotic resistence of invaded communities This study is about problems and questions of alien plants and their relation to native communities in their new range. Ecologists are increasingly aware that soil organisms may affect plant communities because they are part of the processes that affect them. The soil organisms may affect the success of alien species invasion. Each species of plants differ in interaction with soil organisms, these interactions can result in specific feedback that will influence the future growth of other plants. According to Darwin's naturalization hypothesis related species should have similar enemies. This implies less successful invasion of alien plants at home with relatives. The practical part consists of two experiments. Using plant-soil feedback I studied under controlled conditions the importance of kinship of native plants and their soil organisms on the growth of three species of alien plants Impatiens, Parviflora, Stenactis annua and Epilobium ciliatum. There were used soil samples from localities with related and unrelated species; the soil was used as inoculums for growing first-generation plants, where there were original related, unrelated and alien plants. In the second phase only alien species were grown. Part of...
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