Yangın Olaylarında Bazı Taksonların Polen Morfolojilerindeki Değişikliklerin Saptanması

Abstract

Fire is a chemical reaction that causes some physical effects in where it starts and close environments. Therefore fire investigators should know enough information about physical and chemical properties of some materials. Likewise, that is important for understanding reactions happen in which order and how due to the fact that fire includes so many chemical reactions at the same time. Altough fire has a complicated structure, it actually depends on a few simple reactions. These reactions occur depending on oxidation of Carbon, Hydrogen, Sulfur and Nitrogen and features of fuels ignition products. In this study, pollen morphology changes, have different exine stratifications, determined related by fire duration and intensity. For this purpose, due to tectum structure, studies were conducted for taxa of Betula pendula, Acer negundo and Pinus nigra which have tectate pollens, Populus nigra has semitectate pollens and Cucurbita pepo has intectate pollens. Pollens of these chosen taxa have been burned into crematorium from 100° C to 500° C temperature, for 100° C ranges, during 1, 3, 5, 10, 15, 30, 60, 90 and 120 minutes. Chages on pollen morphology related to duration and temperature have been determined and microphotographed with light microscope.