LOCALIZATION OF EMISSIONS ON THE NEEDLE SURFACE .4. OBSERVATION OF EMISSIONS IN THE STOMATAL APERTURE OF DWARF PINE (PINUS-MUGO TURRA), THEVYSOKE-TATRY MOUNTAINS, NORTH-EASTERN PART OF SLOVAKIA

Occurrence of firm airborne emissions in the dwarf pine stomatal apert ures was observed by using of a scanning electron microscopy. Needle s amples were taken from the Furkotska dolina valley in the Vysoke Tatry Mountains. Obtained results confirmed the occurrence of globular and unregular shape emission particles in the needle stomata. On the surfa ce of some observed needles from dwarf pine individuals damaged by emi ssions there was recorded an increased occurrence of fungi mycelium. S uch damaged needles had also a lower content of wax structures in the stomatal apertures and their surroundings.