The Lake Quillwort (Isoëtes lacustris) and Spring Quillwort (I. echinospora) are submerged Lycopods and critically endangered species of Czech flora, each living in a sole lake in the Šumava Mountains (Bohemian Forest). Our 15-year scientific research has been focused on the resistance of these living fossils to the strong acidification of the lakes. Both populations were unable to reproduce for decades and are responding in a quite specific way to the current recovery of the lakes, although this does not quarantee the successful restoration of the quillwort stands. and Martina Čtvrtlíková.
This article refers to the rich vegetation on the rocky slopes along the Achensee (Tyrol, Northern calcareous Alps, Karwendelalpen) described by Professor Anton Kerner 150 years ago. The vegetation today is much less diverse, the subalpine species abundant in the last centuries are absent while the species of mixed mountainous forest prevail. The abundance of the Heather (Calluna vulgaris), which was not mentioned by A. Kerner, may indicate acidification due to acid rain. And the retreat of subalpine species may indicate the on going change to a warmer climate. and Jarmila Kubíková.
Zaniklé jezero Švarcenberk představuje unikátní lokalitu v rámci severního Třeboňska. Sedimenty jezera uchovaly záznam o proměnách přírodního prostředí mezi koncem vrcholného glaciálu a mladším atlantikem. Vodní hladina přitahovala paleolitické a mezolitické lovce, takže v okolí jezera nacházíme značné množství lokalit těchto období. Tato stať chce upozornit na to, že jezero Švarcenberk není v regionu jediné, naopak je součástí struktury, která obsahovala podobných jezer možná až několik desítek. Všechna tato jezera by měla mít obdobný archeologický potenciál. and Determining the archaeological potential of the landscape using Quaternary geological mapping in the Třeboň region, south Bohemia. Former Lake Švarcenberk is a unique site in the northern part of the Třeboň region. Lake sediments have preserved a record of the transformation of the natural environment between the end of the Last Glacial Maximum and the Late Atlantic chronozone. As the water was an attractive location for Palaeolithic and Mesolithic hunters, a great number of sites from these periods are found in the vicinity of the lake. The aim of the essay is to show that Lake Švarcenberk is not the only site in the region but is in fact part of a structure that might have included several dozen similar lakes. All of these lakes could have comparable archaeological potential.