By examining the species composition, density and height structure of tree and shrub species on six deforested and partially fenced experimental plots near Divača the data was gathered for studying the impact of large herbivores on natural regeneration in pine plantations. The most successful species regenerating inside the fenced areas on location 1 were the European hop hornbeam (Ostrya carpinifolia Scop.), black pine (Pinus nigra J. F. Arnold) and South European flowering ash (Fraxinus ornus L.), followed by the downy oak (Quercus pubescens Willd.) and sycamore (Acer pseudoplatanus L.) in the unfenced areas. The most common species in both fenced and unfenced areas of location 2 were mahaleb cherry (Prunus mahaleb L.) and downy oak, inside the fenced area also the black pine while outside the fenced area South European flowering ash and European hop hornbeam. Through pairwise comparisons of fenced and unfenced areas minor statistically proven differences were found between the species composition and height structure of tree and shrub species of fenced and unfenced areas, however, a natural site with its productivity also significantly influences the regeneration process.
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