Gazdovanje šumama u zaštićenim područjima u Srbiji i realizacija konzervacionih ciljeva / Forest protected area management in Serbia and realisation of conservation objectives

In this work, the forest management in protected areas of Serbia was analysed, following: 1) ecologic effects of management and 2) investments in capabilities essential for integration of conservation objectives. The size of protected areas has significantly grown, but there is a little information on their contribution to real conservation goals. Since in most of European protected forest areas is employed active management, the information on ecological effects of management is necessary. The main barrier in ecologic evaluations of managing is the absence of indicators, which could measure the changes in ecosystem, resulting from applied measures. Recently, the potentiality of functional indicators is more emphasized, i.e. indicators, which lean on information about functional traits of species. So, in this work functional approach was taken to analyse ecologic effects of forest management. For this sake were chosen characteristics, which are connected to capabilities of specie s to acquire or conserve resources, i.e. define the answer of the species on changes in available resources, caused by elimination of wooden mass, i.e. logging: height, specific leaf area, leaf dry matter cont ent, nitrogen content and phosphorus content. The same are connected to the processes of significance for conservation of ecosystem integrity (net primary productivity and decomposition). Since the analysis of functional indicators response demands a longer period of observation, another attitude of performing the experiment was conceptualized. For that purpose Landsat satellite image was used, i.e. three images in interval of ten years: 1994, 2005, and 2015. A digital image classification of forest composition was performed, after which the changes in forest composition were detected over the period of 20 years. These data were then connected with the data on functional characteristics of species to determine changes in functional composition. The last step was forming of forest canopy density model, through which was determined the intensity of logging. Using data on changes of forest canopy density model and changes in functional composition, an experiment was performed, i.e. analysis of effects of different levels of logging intensity on changes in forest ecosystem function. For the performing of this experiment was chosen just a part of Fruska gora, as the goal was to try to construct the evaluation approach, adapted to momentary concept of managing in protected forest areas and inspect its feasibility. As an accompanying data with this analysis was performed a comparative analysis of protected forest area managers in Serbia, to examine the level of investments in conservation capabilities, as the key process in implementing conservation goals.