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Vpliv reliefa na objedenost mladja drevesnih vrst zaradi velikih rastlinojedih parkljarjev
Marolt, Gregor (Author), Diaci, Jurij (Mentor) More about this mentor... This link opens in a new window

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Abstract
Veliki rastlinojedi parkljarji s prehranjevanjem z mladjem drevesnih vrst zavirajo naravno obnovo gozda, vplivajo na zmes mladja in delež drevesnih vrst v prihodnosti. V diplomski nalogi smo preučili vpliv izbranih rastiščnih dejavnikov glede na tip mezoreliefa na stopnjo objedenosti osebkov gozdnega mladja. Meritve smo izvedli na 196 ploskvah v GGE Grčarice, del pa tudi v GGE Stojna. Gre za jelovo-bukove gozdove. Na ploskvah smo prešteli vse mladje in ga ločili po drevesni vrsti, višini in poškodovanosti. Ocenili smo tudi ekološke dejavnike reliefa. Skupaj je bilo objedenega 58 % vsega mladja, največ na tipu mezoreliefa ravno (povprečno 83 %). Najbolj objedena drevesna vrsta je bila jelka (Abies alba) z 72 %, sledil ji je gorski javor (Acer pseudoplatanus) z 71 %. S statističnimi analizami smo potrdili vpliv težavnosti terena na stopnjo objedenosti mladja. Z večanjem naklona terena in s težjo dostopnostjo terena oziroma lokacije mladja, se je delež objedenosti mladja zmanjševal. Povezava med kritjem in objedanjem ni bila enoznačna. Objedenost mladja se je povečevala z večanjem razdalje do kritja do ca. 30 m razdalje, najvišje objedanje smo zabeležili pri najmanjši stopnji kritja. Oboje govori v prid večjem objedanju pri boljši preglednosti, kar je verjetno posledica prevladujočega objedanja s strani jelenjadi.

Language:Slovenian
Keywords:objedenost, veliki rastlinojedi parkljarji, mezorelief, pomlajevanje, jelka, kritje
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2020
Publisher:[G. Marolt]
UDC:630*45:630*113(043.2)=163.6
COBISS.SI-ID:32152579 Link is opened in a new window
Views:74
Downloads:31
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Secondary language

Language:English
Title:Relief and browsing damage of tree species caused by large herbivores
Abstract:
Large herbivores that feed on seedlings of tree species delay the natural regeneration of a forest, and they influence the mixture of seedlings and the future composition of tree species. In this thesis we analysed the influence of selected habitat factors related to the type of relief on the rate of browsing damage of forest seedlings. We carried out measurements on 196 plots in GGE Grčarice and on some plots in GGE Stojna. Silver fir-beech forests predominate. We examined all seedlings on the plots by tree species, height and damage. We also assessed the ecological factors of the relief. We found that 58% of all seedlings were browsed by ungulates, most of them on flat relief (average 83%). The most severely browsed tree species was silver fir (Abies alba) with 72%, followed by sycamore maple (Acer pseudoplatanus) with 71%. Statistical analyses confirmed the correlation between the accessibility of the terrain and browsing damage to seedlings. With increasing inclination and accessibility of the terrain, the rate of damaged seedlings decreased. Browsing of seedlings increased with increasing distance to the ungulate cover up to a distance of approx. 30 m. The highest browsing was also observed at the lowest ungulate cover level. Both indicate increasing browsing with overall better visibility, which is probably due to the predominant browsing by red deer.

Keywords:browsing damage, large herbivores, mesorelief, regeneration, silver fir, cover

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