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	Relative pollen productivity estimates of main tree taxa of Central Europe - assumptions for data collection. Šourková, Pavlína ; Abraham, Vojtěch (advisor) ; Kuneš, Petr (referee) Quantitative reconstruction of vegetation from fossil pollen data makes is possible to learn about historical development of the flora of a particular area and, thus, to a certain degree about the climate changes as well. Parameters (the so-called pollen productivities) needed in order to convert the pollen data into the vegetation data can be acquired by calibration from modern samples. The constancy of these parameters in time is assumed on the basis of the principle of uniformitarianism. Due to climatic conditions, however, pollen productivities are not constant in space and must be estimated for each region separately. The pollen and vegetation percentage data can be used to carry out relative pollen productivity estimates (PPE). The relative pollen productivities are related to a reference taxon, which has a value of 1 and vegetation abundance expressed by content units. Relative pollen productivities are estimated by means of the so-called ERV models. Before entering the ERV models, the vegetation data must be weighed by the distance in order to take into account the fact that the more remote plants contribute to the sample with a smaller quantity of pollen than the nearer ones. It is the Prentice-Sugita model of pollen dispersion ant disposition that is currently the most appropriate... Detailed record
	Glasses of the Ge-Bi-S system doped by Pr3+ ions Šourková, P. ; Frumarová, Božena ; Frumar, M. New glasses of Ge-Bi-S systems doped by Pr3+ ions were prepared. Their optical and thermal properties were studied. Detailed record
	Amorphous chalcogenide thin films doped by Sm3+ ions Frumarová, Božena ; Frumar, M. ; Šourková, P. ; Vlček, M. Pure and Sm3+ doped amoprhous thin films of Sb2S3 and GeS2-Sb2S3 systems were prepared by thermal co-evaporation. Optical properties of this films were studied. Detailed record

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1	Šourková, Pavlína

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