Míčovka kulkonosná (Pilularia globulifera – Marsileaceae, Pteridophyta) je evropský endemit se zřetelným subatlantským rozšířením. V současné době je ohrožena a postupně vymírá na území celého svého areálu. Míčovka kulkonosná byla znovu objevena pro květenu České republiky po téměř 70 letech. Nová lokalita byla nalezena v roce 2007 na rybníce nedaleko Studené na úpatí Javořice na Českomoravské vrchovině (Ekrtová a kol. 2008). v Příspěvku jsou shrnuty poznatky o celkovém rozšíření druhu, rozšíření v ČR a ekologické nároky druhu. and Pilwort (Pilularia globulifera – Marsileaceae, Pteridophyta) is a European endemic species with subatlantic distribution. At present, it is endangered and is gradually becoming extinct in the whole area of its natural distribution. Pilwort has been rediscovered in the Czech Republic after almost 70 years. The new locality was found at the base of Javořice hill in the Bohemian-Moravian Highlands in 2007. General information is presented on habitat, ecological preferences and distribution area.
Motivated by the concept of tangent measures and by H. Fürstenberg’s definition of microsets of a compact set A we introduce micro tangent sets and central micro tangent sets of continuous functions. It turns out that the typical continuous function has a rich (universal) micro tangent set structure at many points. The Brownian motion, on the other hand, with probability one does not have graph like, or central graph like micro tangent sets at all. Finally we show that at almost all points Takagi’s function is graph like, and Weierstrass’s nowhere differentiable function is central graph like.
Monitoring of tectonic movements along three active faults of Dinaric (NW-SE trending) fault system in W Slovenia using TM 71 extensiometers was set up in 2004. After two and a half years of measurements clear trends of displacement were recorded. The average left-lateral displacement along a crack in the inner fault zone of the Idrija fault in Učja valley was reading 0.38 mm/year. Short term (10 months) rates were even greater and reached the value of 0.54 mm/year. Since the Idrija fault is considered generally to be dextral strike-slipping, the observed left-lateral displacement can be explained by variations in principle stress. Raša fault monitoring site at the foot of Vremščica Mt. established an average reverse uplift of hanging wall (SW) block of 0.24 mm/year and left-lateral displacement of 0.16 mm/year. Short term (9 months) vertical displacements reached the value of 0.53 mm/year. The inclined displacement is in agreement with geological and seismological observations. In the Postojna cave system two instruments were installed at the fault which extends parallely to Predjama fault zone. The average vertical displacement rate at Postojna 1 site was 0.01 mm/year. Both devices recorded similar reaction which can be attributed to 12 July, 2004 (Mw=5.2) earthquake with an epicentre 70 km away from the measuring site. Since there were no other stronger earthquakes in the vicinity and time span of monitoring, no other correlations were established with earthquake activity. The observed displacement rates along all three monitored faults of up to 0.5 mm/year are consistent with the regional deformation rate in W Slovenia established from GPS measurements which is of the order of 2 mm/year., Andrej Gosar, Stanka Šebela, Blahoslav Košťák and Josef Stemberk., and Obsahuje bibliografii