The aim of the study is the presentation of the directions and scale of changes in the morphology of the Himalayan and its piedmont river channels occurring under the contemporary influence of human activity. The study uses the results of morphological field research conducted in the Teesta river basin (right tributary of the Brahmaputra) in the period 2011-2015. The research shows that one of the most common anthropogenic form affecting banks of the Himalayan channels is their reinforcement and reprofiling related to bridges and dams construction. In turn, on the Himalayan piedmont, the most visible human influence is massive extraction of riverbed sediments what leads to the deepening of river channels. The morphological changes of channels caused by human interference deteriorates the quality of the rivers habitat and affects human communities dependent on rivers ecosystem services.

The study analyzes the temporal dynamics of water temperature in the vertical profile of the Besko reservoir located on the Wisłok river (upper Vistula river basin) in the Polish Carpathians. The data from 5-year water temperature monitoring were used in the analysis. Field surveys were conducted near dam of the reservoir (once a month) in the years 2014-2018. Measurements were carried out in the interval, every 1 m from the surface of water towards the bottom of the reservoir with using an electronic thermometer. The results of the studies showed that the Besko reservoir presents a typical for Carpathian dam reservoirs dynamics of thermal conditions during the year, strictly dependent on changes in thermal conditions of the air. Strong relations between water temperature and air temperature are gradually weakening along with the depth of the reservoir. During the summer, thermal stratification develops in the reservoir with vertical, several-degree temperature drop with a depth. The thermocline forms at smaller depths than in other large Carpathian reservoirs. In winter, reverse stratification is created in relation to the summer period, characterized by an increase of temperature values from the surface (covered with an ice) towards the bottom of the reservoir, and the difference in temperature values is 2-2.5°C. In autumn and spring, transitional thermal conditions between summer and winter periods develop which exhibiting homothermia features. In addition, the state of homothermia in the reservoir is also observed in the case of so-called warm winters.