This article refers to "The Convention on the Protection of the Biological Variety" ratified by Poland in 1995. Its content directly concerns the geographical variety as the background of the water circulation process. The ...

The Dzierżązna and Ciosenka (Dzierżązna's tributary) drainage basins are characterised by significant variety of land use forms. The southern part of the basin has large proportion of build-up areas, with single-family ...

The hydrographical network is a phenomenon under constant time and space changes. These ch_anges have seasonal and multi-annual character. The dynamics of this phenomenon needs estimation not only of the network itself ...