Vpliv propadanja jelke (Abies alba) ter objedanje jelenjadi in srnjadi (Cervidae) na pomlajevanje drevesnih vrst na Kočevskem : diplomsko delo - univerzitetni študij

Klobučar, Blaž (author), Nagel, Thomas Andrew (mentor)

Namen diplomskega dela je preučiti vzajemno delovanje dveh motenj, ki vplivata na pomlajevanje: nastanka vrzeli zaradi odmiranja jelke in objedanja jelenjadi in srnjadi na pomlajevanje v Kočevskem Rogu. Za raziskovalni objekt je bil izbran Rajhenavski pragozd. Sedanje stanje podmladka so primerjali s stanjem v letu 1984. Za primerjavo je bila analizirana sestava mladja v bližnjih ogradah izven pragozda. Ugotovljeno je, da je Rajhenavski pragozd močno izpostavljen selektivnemu objedanju predvsem jelenjadi, gostota jelk je 132 rastlin/ha, gostota javorja je 212 rastlin na ha, medtem ko je gostota bukve 13928 rastlin/ha. V ograjah v bližini so rezultati močno razlikujejo: bukev 8627 rastlin/ha, jelka 4993 rastlin/ha, javor 8007 rastlin/ha Gostota jelenjadi se je povečala v zadnjih 50 letih in območje Rajhenavskega pragozda ji zagotavlja ugodne habitatne razmere. Na dolgoročno vrstno zgradbo in na zmanjšanje števila vrst v Kočevskem Rogu bo vplival vrstno-specifični odziv naveč različnih, medsebojno vplivajočih motenj in okoljskih dejavnikov.

• Language: Slovenian
• Keywords: pragozdovi, jelenjad, srnjad, jelka, javor, bukev, mladje, Kočevski Rog, vrzeli
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [B. Klobučar]
• Year: 2013
• Number of pages: VII, 45 str.
• PID: 20.500.12556/RUL-38103
• UDC: 630*22
• COBISS.SI-ID: 3598502
• Publication date in RUL: 10.07.2015

Secondary language

• Language: Slovenian
• Title: The effect of silver fir (Abies alba Mill.) decline and deer browsing (Cervidae) on tree regeneration in Kočevski rog

Abstract

The purpose of this research was to study the mutual effects of fir decline and deer browsing on tree regeneration in Kočevski Rog. The first part of the study was conducted in an old-growth forest of Rajhenav. The current number of tree saplings and seedlings was compared to the data from 1984. To further compare, an identical study was performed in the fenced areas in the vicinity of Rajhenav forest, where the effect of deer browsing is eliminated. The conclusion is that Rajhenav old-growth forest is under severe selective browsing pressure. The density of fir seedlings is 132/ha, the density of maple seedlings is 212/ha, while the average beech density is 13928/ha. The numbers in fences are significantly different: 8627 beech saplings and seedlings/ha, 4993/ha for fir and 8007/ha for maple. The population density of deer has rapidly increased in the past 50 years and the Rajhenav old-growth forest provides a favorable habitat conditions. The long-term tree species distribution and reduced diversity resulted from species-specific responses to interacting disturbances and environmental factors.