Geomorphology and landscape ecology; landform development by periglacial processes; a genetic classification of periglacial soil differentiation in the active layer; formation by gelisolifluction; landform development by surface runoff; streamdynamics; stream long profiles; the channel pattern; stream long profile and stream channel pattern; tectonics and morphodynamics; tectogenetic landform development cycles; differentiation of morphodynamics by weathering and bedrock patterns; vegetation and landform development; feedback between vegetation and geomorphodynamics; climate change and geomorphodynamics; extreme aridity - dry periods; are the zones of valley development and of planation? interference of climatic cycles with differing characteristics; the interference of climatic variations with the effects of tectonics and baselevel changes; long term increasing aridity of the climate; long term increasing himidity of the climate; long term changes in temperature; effects of simultaneous decrease of temperature and humidity and of a lowering of baselevel; the effect of simultaneous increases in temperature and precipitation and of a rise in sealevel; additional ways of distinguishing between the influence of tectonics and climatic changes; geomorphology of the climatic zones; the wet-dry tropics
