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National Repository of Grey Literature 52 records found  beginprevious51 - 52  jump to record: Search took 0.00 seconds. 
Evaluation of the effects on the environment - a case study. The monitoring of bark-beetle population dynamics in the areal windbreak after Hurricane Kyrill.
 VOJÍŘ, Lukáš
My thesis deals with bark beetle in two model areas affected by disturbances in the Šumava Mountains which were caused by Hurricane Kyrill in January 2007. The localities are Černá hora and Kalamitní svážnice pod Trojmeznou. Monitoring on both of these localities was realized in a zone with no human intervention. On these two model areas population dynamics of bark beetle in areal blowdowns and spatial distribution of advance growth in the harmed area was determined. Based on the monitoring of individual localilities, we can presume population dynamics of bark beetle in the following years.
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Těžba v Predator-Prey modelu
 Chrobok, Viktor ; Lagová, Milada (advisor) ; Kalčevová, Jana (referee)
The paper is focused on the Predator-Prey model modified in the case of harvesting one or both populations. Firstly there is given a short description of the basic model and the sensitivity analysis. The first essential modification is percentage harvesting. This model could be easily converted to the basic one using a substitution. The next modification is constant harvesting. Solving this system requires linearization, which was properly done and brought valuable results applicable even for the basic or the percentage harvesting model. The next chapter describes regulation models, which could be used especially in applying environmental policies. All reasonable regulation models are shown after distinguishing between discrete and continuous harvesting. The last chapter contains an algorithm for maximizing the profit of a harvester using econometrical modelling tools.
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National Repository of Grey Literature : 52 records found   beginprevious51 - 52  jump to record:
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