river morphology; landscape evolution;sediment supply; stream (dis)connectivity; stream channel evolution scenario; Moravskoslezské Beskydy Mts.

Long term landscape evolution affects the morphology of stream channels. The paper summarizes stream channel changes within the natural state of landscape void of man activity (traditional scheme of river stream adjustments during the Quaternary). Beskydian water streams have typical morphology given by huge sediment delivery to the channels. Quantity of this sediment volume was different during the Pleistocene and Holocene times. The main attention is paid to the landscape evolution after mountain colonization after the year 1500. Progressive transformation of the stream morphology has occurred due to fundamental changes in the landscape structure and land use.