The aim of the study was to establish natural mass losses of shortly stored fresh fruits and berries and to evaluate the influence of temperature and carbon dioxide concentration on the natural mass losses when storing apples of various cultivars. There were investigated natural mass losses of apricots, pineapples, oranges, avocados, bananas, persimmons, lemons, figs, pomegranates, grapefruits, carambolas, horned melons, kiwi, pears, sweet kinkanus, lychee, mandarins, mangoes, nectarines, apples, papajas, peaches, plums, sweet cherries, cherries, grapes, red and black currants, when storing for short period in wholesale enterprises and modeling var-ious storage conditions at the Lithuanian Institute of Horticulture. The investigations were carried out in 1997–2007