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Main objective of this thesis was searching for optimal management in natural reservation Tesák, which should lead to preservation, eventually increasing and stabilization of silver fir's local population in the future. For these purposes there was carried out field mapping using Field-Map technology, which was targeted to most unsatisfactory part - segment B (from current conditions point of view). Information base for growth simulator Sibyla was formed by field investigation data. It was created and evaluated four alternative management scenarios. Best option was chosen based on their results. After 50. years of management, values of the variables were best with scenarios 4 and 3. These scenarios represented thrifty restoration interventions in spruce part of segment, fencing of insolated parts and underplanting with targeted tree species. A positive result was based mainly on silver fir appearance and its living specimen numbers in the area. At the same time there would be decline in the numbers of spruce - below 10 %, which would make possibility to classify segment B as naturalness degree III - close to nature.