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Evaluation of habitat with the occurrence of critically endangered species \kur{Gentianella praecox} subsp. \kur{bohemica} at sites near Chvalsiny and Cesky Krumlov
KOŠKOVÁ, Irena
The diploma program summarized in this paper was to evaluate the habitats of Gentianella Praecox, subsp. Bohemica, in the Chvalšiny and Český Krumlov areas where the taxon can be encountered on eight sites. The narrative section, summarizing the biological and ecological aspects of the species, provides also information on why the taxon is endangered and how it can be protected. A special chapter is dedicated to the program of its recovery. The methodological section, characterizing the area of interest and its different sites, describes also the procedure applied to create and evaluate phytocoenological relevés. The chapter is complemented with information on the numbers of plants in bloom, a figure representing the communities of Gentianella praecox, subsp. bohemica, as found at the individual habitats. Statistical evaluations of the phytocoenological relevés revealed, inter alia, a certain change in the species composition and coverage, primarily on all sites at Svatý Kříž (Chvalšiny). The change observed in these habitats manifested itself also through the increase in coverage of the more mesic species of Plantago lanceolata, Achillea millefolium, and Lotus corniculatus. The numbers of individual plants of Gentianella praecox, subsp. bohemica, encountered in bloom showed substantial year-on-year fluctuation.
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International trade in Malagasy succulents, protected by CITES
KOŠKOVÁ, Irena
Harvesting of endangered plant species from wild nature for trade purposes as well as reduction of natural habitats are the main reasons for lost populations in wild nature. CITES listed the endangered species, for which trade control is required, to its list. Included in the list is majority of Madagascar-based succulents plants. This thesis reviews trade with the Madagascar-based succulent plants protected by CITES between the Czech Republic and other countries. The trade was reviewed based on data from CITES Trade Database administered by UNEP WCMC for periods between 1992 and 2012. The most frequent reason of the trade with the selected group of plants was commercial interests. The main country of import and re-export was Madagascar with dominant share of specimens originating from wild nature. Almost all specimens were live plants from Appendix II. The share of represented genus in import, re-export and export was very similar. The development trends were not demonstrable from the statistical point of view.
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