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Analýza složení plevelové vegetace na železnici
Ševčíková, Silvie
The main goal of this thesis was to analyze the composition of weed vegetation on the railway. Selected sections of railway lines were Brno Main railway station and its ancillary operations. Observations were made on five different sites, on the embankment, on tracks, in the no used track, on places between rails and buildings. Vegetation was evaluated by using vegetation of fytocenological plots. At each station were carried out three plots. The first evaluation was in July and the second one in September 2013. Monitoring were statistically processed by analysis DCA and CCA. On the selected section of the railway was sighted a total of 49 kinds of plants. The highest ground cover species were Ailanthus altissima, Achlea millefolium, Arctium tomentosum, Arrhenatherum elatius, Digitaria sanguinalis, Echium vulgare, Equisetum arvense, Parthenocissus inserta, Sambucus nigra and Viola arvensis.
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Vegetace pozemku s fotovoltaickými elektrárnami a její význam pro ekosystém
Uldrijan, Dan
The thesis is focused on the evaluation of vegetation composition and on determining the effects of its regulation on the composition of vegetation. The significance of vegetation for photovoltaic power plant and ecosystem was also evalusted. It is followed by the recommendations of vegetation control for photovoltaic power plants. The research was conducted between the years 2013 - 2015. Sixty five species were found. As species potentially dangerous for the operation of the photovoltaic power plant were identified Festuca rubra, Dactylis glomerata, Cirsium arvense, Apera spica-venti, Trifolium pratense, Chenopodium album, Salix alba, Salix cinerea, Antryscus sylvestris and Urtica dioica. As species potentially dangerous for the ecosystem were determined Dactylis glomerata, Cirsium arvense, Chenopodium album. As species that can have a positive impact on the power plant were determined Festuca rubra, Trifolium repens and Tirofolium pratense. As species with a positive impact on the ecosystem were determined Taraxacum sect. ruderalia, Trifolium repens, Tirofolium pratense and Lamium album. Mulching was determined as the appropriate type of vegetation control. It was recommended to replace the use of herbicides with mowing or reduce the frequency of herbicide application to once in two years.
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Analýza složení plevelové vegetace na železnici
Ševčíková, Silvie
The main goal of this thesis was to analyze the composition of weed vegetation on the railway. Selected sections of railway lines were Brno Main railway station and its ancillary operations. Observations were made on five different sites, on the embankment, on tracks, in the no used track, on places between rails and buildings. Vegetation was evaluated by using vegetation of fytocenological plots. At each station were carried out three plots. The first evaluation was in July and the second one in September 2013. Monitoring were statistically processed by analysis DCA and CCA. On the selected section of the railway was sighted a total of 49 kinds of plants. The highest ground cover species were Ailanthus altissima, Achlea millefolium, Arctium tomentosum, Arrhenatherum elatius, Digitaria sanguinalis, Echium vulgare, Equisetum arvense, Parthenocissus inserta, Sambucus nigra and Viola arvensis.
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Impact of local heat leakage on vegetation and participation of non-native species
SVĚTLÍKOVÁ, Petra
Human-induced climate change is a recent phenomenon affecting vegetation structure and functioning. As a proxy of climate change, impact of long-term heat leakage from an underground pipeline on vegetation structure was investigated during a two-year study. Zone above the pipeline was considered as a heat island for non-native, potentially invasive plant species. To test this hypothesis, comparative field and laboratory germination experiments were conducted on closely related invasive and native species. Results of this study provide further evidence that climate change can alter vegetation composition and support invasion of non-native, especially C4 species.
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