Abstract The first studied flora of a mountain lake on the Suntar-Khayat ridge was represented by 170 species non-diatoms in addition to 112 previously diatoms. calculated similarity indices, correlation analysis and bioindication showed uniqueness non-diatom flora, dominated charophytes general genera Cosmarium Closterium . results study suggest that altitude location zone Arctic deserts were ...

The glaciers of the Cordillera Blanca, Peru, are rapidly retreating and thinning as a result of climate change, altering the timing, quantity and quality of water available to downstream users. Furthermore, increases in the number and size of proglacial lakes associated with these melting glaciers is increasing potential exposure to glacier lake outburst floods (GLOFs). Understanding how these ...

purpose headache at altitudes has had an incidence of 25-62% through many related studies. many reasons are identified concerning headache at altitudes such as acute mountain sickness (ams), sinus headache, migraine, tension type headache, and frontal tension headache. this study tried to compare different types of headache among trekkers on mount damavand, a 5671m mountain, iran, to find their...