Wetlands on arable land host ephemeral vegetation and their existence relies on soil water saturation and periodic mechanical disturbations. In this habitat, we found several rare species listed in the Black and Red List of Vascular Plants of the Czech Re - public. Evidently, wetlands on arable land deserve protection and further research is needed for their closer inspection. and Radomír Němec, Vlasta Škorpíková, Václav Křivan.
Both molecular and palaeoecological methods enable us to study past changes in plant distribution. The results of recent phylogeographical studies have demonstrated that Central Europe was not only at a crossroads of postglacial migration routes, but also an area where many species might have survived during glacial periods. and Tomáš Fér, Karol Marhold.
Apart from a brief overview of GIS analyses used in botany and an explanation of the differences between two basic data models (vector or grid), the current paper also offers three case studies which used GIS to plan sampling design, explain causes of species composition and model phenological map. and Dana Michalcová, Ondřej Hájek.