DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 9-10/1982 str. 37 <-- 37 --> PDF |
clear Power Plant was at that the indirect cause. Investigation has demonstrated the importance of the former forests in the life of birds, whether these be groups of trees or little sections of primary forests with all the characteristic gradations; dead solitary trees, branches on the borders of antrophogenic grounds faces or on the edges of small forests. The process of change through these three and a half years of investigation, taking 1978 as the basis for comparaison, had been directed towards uniformity, clearing, i. e. »beutification« of the landscape. Unfortunately, this caused the impoverishment or the complete dissappearance of certain biotopes and key ecological niches. The process of civilization moves forward while the results become those which typically encroach into the actual urban ecology, posing a particular problem in the highly civilized countries. According to the yearly reports which have been published to the present day (Štroma r 1978, 1979, 1980, 1981), the role of the enumerated vegetation remains can be seen because birds have been able satisfy their basic requirments for life. The requirments of birds for such biotopes can be classified but cannot be separated because they are intertwined and connected with the daily and yearly rhytm of migration: a) nesting sites, b) resting places, c) places to spend the night, d) orientation and lookout sites, regarding food or enemies, e) sources of food, f) refuge from enemies,g) all the above is expressed in the phenomen of migration in its various gradations (Štromar , 1971) such as invasions, movemnts between migrations, early summer migrations, as well as regular migrations. The results of investigations show that it is an indisputable fact that the material possibilities of man in the process of civilization tend to a higher standard of laving and endanger the natural base of the biosphere wich could negatively reflect on man in future. At the present time and within our coordinates, these urban ecological problems become ever more present and unfortunately we do not lag behind countries with high standard of living. What actual measures can be taken? Almost nothing is possible because the process of civilization does not stand still, but moves on and cannot be stoped as such. Man as a rational being could take a specific stand, bearing in mind that the position of our country in the southeast part of Europe, as well as the varibility of biotopes, are percoditions for ensuring a rich bird fund. Is it possible to neglect these anthropogenic influences with regard to the region of the Krško Nuclear Power Plant, and permit only the remains of the primary vegetation so important to bird survival to exist? Primljeno 13. 06. 1987. |