DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/2022 str. 46 <-- 46 --> PDF |
GB on the south aspect was 0.90, which was the lowest level for fir stands. Also, the evenness value (0.36) of GB stands on the south aspect was the lowest. Interestingly, the north aspects of these stands had the highest evenness value with 0.56 (Table 13). Among the fir stands, the highest diversity by aspect and observation period according to the Shannon index was seen in June on the southern slopes with a value of 3.36. The lowest value was 3.10 in August in the north. While the lowest evenness value was observed in August with 0.41 on the south aspect, the highest value in the north was observed in September with 0.57 (Table 14). DISCUSSION RASPRAVA With this study, taxa were determined by sampling in 640 quadrate samples in GA, GB, GC and GD stands of fir forests on north and south aspects from June to September. Shannon and Simpson diversity index values were calculated at alpha and gamma diversity levels in these stands. 122 taxa were determined at the level of variety, subspecies, species, genus and family. However, in a situation of whole stand area survey, it could be expected that the number of taxa would be higher for this region. Beus and Vojniković (2005) identified 56 plant species in mixed fir and beech species in Bosnia and Herzegovina. Although our study was realized in pure stands of Trojan fir, their value is less than half of our results. There can be many factors effecting floristic composition. Also, there are mixed stands of fir with pine around our study area, but we did not focus on them. By carrying out the diversity analysis in different forest stands with step-by-step researches, it can be possible to compare similar areas in terms of diversity and make a classification. Redowan (2015) made a classification of diversity indices for Majella National Park (Italy) by arranging the index values and classifying them from low to high to compare different forest areas in the national park. A similar global system can be developed by carrying out the diversity index analyses for different regions. Among 122 taxa, some, like Calamintha grandiflora, Fragaria vesca, Helleborus orientalis, and Rubus sanctus were registered in all stand types (GA, GB, GB, SE) from June to September. However, considering the aspect conditions, it was determined that only Fragaria vesca was seen in quadrates in all cases. Fragaria vesca is an important taxon for wildlife, as well as for cultivation for its fruits. It is an important product that should be evaluated as a non-wood forest product in terms of planning. It can also be used as an income-generating product for the local people. Graae and Heskjaer (1997) did not observe the effect of stand structure on species diversity in their study to determine the differences between managed and non-managed forests. However, they stated that there is less species |