This research studies the spatial distribution, structure and population dynamics of roe deer in the forest management area (FMA) of Tolmin. The FMA%s deer population was analyzed using a database containing 26853 records on deer harvested throughout a period of 8 years. Data on sex, estimated age, body weight, antler weight as well as the date and location of harvest for the 2001-2004 period were obtained exclusively from the committee's notes, while the lov_ev.dbf file was used for the 2005-2008 period. According to tooth replacement and wear, deer were divided into the following age categories: (1) up to one year of age (fawns) (0.5); (2) yearlings (1.5); (3) two-and-a-halfyear- old animals and adults (2.5). The latter category was further divided into the following age classes: pre-reproductive (3.5), reproductive (5.5) and post-reproductive (8.5). Population density was calculated using a fixed kernel method. We determined that deer inhabit almost the entire geographic area of northwestern Slovenia; however, densities vary considerably, since they tend to occupy lower-lying habitats. Individuals with the largest body weight were found in the area with the highest densities, leading to the conclusion that its densities are below the upper limit of the environment's carrying capacity. In each age category, male individuals have heavier body weight. A decrease in body weight over the two periods under examination indicates that the population is growing.
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