The subject of this analysis is Bridge No. 1 in Mikulčice, which was discovered during a large-scale archaeological excavation of a former riverbed between the years 1966 and 1968 and revisited in 2012. Although it is the best preserved bridge in Mikulčice, reconstucting it faces a number of limitations. The aim of this article is to define in more detail such limitations as well as possibilities, drawing on previous attempt to reconstuct this bidge. During the processing of the find situation of Bridge No. 1 foru "key questions" regarding reconstruction have been formulated. Our resulting statement says that in the fiven circumstances we cannot exclude the existence of a number of substantial reconstructions of the bridge, or rather the existence of more bridges constucted over time in the same place. Because only the load-bearing parts of the bridge´s construction have been preserved, we know almost nothing about the part above water level. Here we can be inspored especially by mediaeval and modern era bridges in period representations or by bridges of similar constuction that are still standing. There remains the general quetion of the origin of the bridge´s consturction, which has analogies in a nuber of La téne and Roman localities in Western Europe. A possible explanation is that the Classical tradition of engineering may have been mediated by the provinces in the Danube region., Lumír Poláček, Gerard Wilke., and Obsahuje seznam literatury
Lokalita Mokré louky u Třeboně je rozsáhlé, dnes uměle odvodněné rašeliniště. V roce 1998 odtud bylo vyzvednuto cca 50 kmenů dubu letního (Quercus robur) o délce až 10 m a maximálním průměru 120 cm. Z 31 kmenů byly odebrány vzorky pro dendrochronologickou analýzu, která prokázala, že úhyn většiny dubů spadá do krátké periody počátku 20. let 10. století. Za účelem studia okolností, za kterých se dubový les na lokalitě vyskytoval a za kterých došlo k jeho zániku, byl proveden plošný odkryv. Na jeho místě byla studována stratigrafie a odebrány vzorky na pylovou a makrozbytkovou analýzu.V době, kdy se na ploše rašeliniště vyskytoval vzrostlý dubový les, nacházela se lokalita i její okolí v čistě přírodním stavu. Příčiny zániku lesa počátkem 10. stol. nelze zatím s jistotou určit, roli mohly hrát klimatické příčiny v kombinaci s lokálními faktory. Později, během vrcholně středověké kolonizace, došlo k prvnímu významnému zásahu do krajiny Třeboňské pánve. Zakládána byla pole, pastviny a louky, regionální lesní porosty ustupovaly, nebo alespoň degradovalo jejich přirozené složení. and The Mokré louky (lit. „Wet Meadows“) area near Třeboň is an extensive, today artificially drained, peat bog. In 1998, around 50 trunks of Sessile (Durmast) Oak (Quercus petrea) were removed from here, each around 10m in length and with a maximum diameter of 120 cm. Samples were withdrawn from 31 trunks for dendrochronological analysis, which showed that the deaths of most had taken place in a short period at the beginning of the 920’s AD. As part of a study of the events leading to the establishment of the oak wood on the site, and those which led to its demise, a larger area was opened for examination. The stratigraphy of the site was studied, and samples were taken for analyses of pollen and macro–remains. For the period in which woodland occupied what is now a bog, the site and its surroundings were in an entirely natural state. The causes of the woodland’s demise at the beginning of the 10th century are unclear, but an important role may have been played by climatic factors in combination with other external stimuli. Later, during the colonisation in the High Middle Ages, regional woodland growth receded, or their natural components were at least degraded.