This master thesis if focused on the phenomenon of hydrological drought in the Šumava (Bohemian/Black Forrest) region. Hydrological drought is defined on seven hydrological stations (Modrava (CZ), Rejštějn (CZ), Sušice (CZ), Zwiesel (DE), Teisnach (DE), Chamerau (DE), Kalteneck (DE)) during period 1931-1937 and 1949-2014. The aim is in finding suitable hydrological dought indexes and other methods and apply them od the data. Results are compared each other and also are compared with studies that were proceed in non-mountainous region. For hydrological drought evaluation the threshold concept and method according Gumbel 1963 were used and deficite volumes were calculated. Seasonality graphs and graphs for nuber of drought days in hydrological years were constructed, For trends defining, Mann.Kendall and Hisch-Slack tests were used. Hydrological drought sesonality is different on german and czech side, it means effect of exposition towards southwest winds. Hydrological drought is concetrated in autumn at german stations and in winter on czech stations. Number of drought episodes decreases with decreasing elevation. There were found significant decreasing trends in drought episodes occurance in time. Monthly trends aren't so clear. On czech side there is significant decreasing trend in winter months,...

Sorted patterned ground are a group of periglacial microforms which create more or less symmetrical forms due to frost action and especially repeated freeze-thaw cycles. The origin of sorted patterned ground in the Giant Mts. is presumed in late Pleistocene and they are suggested to be recently inactive (with the exception of sorted circles). Their occurrence is linked to the topmost localities with flat surfaces and intense wind action which causes low snow cover and allow deep soil freezing. The submitted diploma thesis deals with the influence of site characteristics (such as microclimatic extremity, terrain morphology and lithology) on morphology and sorting degree of sorted patterned ground. Field research was carried out along a transect tracing the microclimatic extremity gradient (represented by altitude and so-called relative snow height) in area of Mt. Luční hora in the eastern part of the Giant Mts. which in relatively homogeneous from the viewpoint of lithology and wind exposure. The transect was further extended across the Modré sedlo Saddle to the Mt. Studniční hora where there also occur various types of fossil sorted patterned ground or quasi- active sorted circles in the Modré sedlo Saddle, respectively. However, there is a variability of lithological as well as altitude...