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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Effect of competition on resprouting and sprout growth of temperate trees
 Patra, Lukáš
Presented thesis is focused on competition, sprout growth and resprouting ability of temperate trees. The main aim was to analyse the effect of competition on resprouting success and sprout growth of selected trees. Calculations are based on sprout size measurements of selected resprouting trees on pre-existing TARMAG II experimental plot near Soběšice, the Czech Republic. Appropriate allometric equations were used to determine biomass of individual trees and pre- and post-harvest competition indices. Statistical analysis disclosed that pre-harvest and post-harvest competition can significantly affect sprout growth of temperate trees, but can differ among species and has variable effect onto the growth. Results also clearly showed that pre-harvest competition did not affect resprouting ability of Quercu spetraea. The results indicate that thinning of sprouts in the early stage of coppice development could support sprout growth and thus biomass production.
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Struktura a diverzita sekundárního tropického deštného lesa v regionu Ucayali, Peru
 Patra, Lukáš
The bachelor thesis deals with the structure and diversity of secondary rain forest in the region of Ucayali, Peru. The main aim was to measure and analyze the structure and diversity of wood floors using technology Field-map. On the representative one hectare area was measured 3601 trees that were classified into 133 species and 48 families. These trees were then divided into five classes of height, eight diameter classes and into four groups according to the value of their timber. The highest species diversity and the highest quantity of trees were in the first three DBH classes and with an increasing thickness, they were descending. The average thickness of the trees was 35.3 cm and the average height then 18.9 meters. The most frequently occurring tree on the plot was Cumala (Virola flexuosa).
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