20.500.12556/RUL-167302 Semenenje in demografski kazalci mladja v pragozdnih rezervatih jelovo-bukovih gozdov Patterns of seed production and seedling demography across old-growth beech-fir forests Študija je potekala v pragozdnih rezervatih Pečka, Rajhenavski Rog in Šumik. Namen naloge je bil ugotoviti in prikazati preživetje klic med posameznimi obdobji po drevesnih vrstah, pragozdovih (Pečka, Šumik, Rajhenavski Rog) ter ugotoviti vpliv divjadi (objedanja) na uspeh preživetja klic po drevesnih vrstah. V vsakem pragozdnem rezervatu smo postavili 20 objektov. Na posameznem objektu se je nahajala po ena semenska past, kletka proti objedanju in kontrolna ploskev. V statistiki smo uporabili na novo pridobljene podatke in podatke iz prejšnjih let, ki smo jih med seboj združili in primerjali. Ugotovili smo, da je v pragozdovih Pečka in Rajhenavski Rog po številu klic prevladovala bukev. Njen delež preživetja pa je bil od vseh drevesnih vrst najnižji. V pragozdu Šumik sta nas presenetila veliko število klic smreke in njen izredno nizek delež preživetja. Najboljše rezultate smo ugotovili pri javorju. Na koncu študije za jelko nismo ugotovili statistično značilnih razlik med kontrolno ploskvijo in ploskvijo, zaščiteno s kletko. Pri popisovanju smo opazili kar nekaj objedanja s strani žuželk in polžev, predvsem pri klicah bukve. Na splošno študija poudarja veliko medletno variabilnost v številu klic in visoko umrljivost eno leto starih osebkov. Vse kaže na to, da je za boljše razumevanje dejavnikov dinamike klic potrebna daljša časovna slika. The study was conducted in the old-growth forest reserves of Pečka, Rajhenavski Rog and Šumik. The purpose of the study was to quantify the survival of seedlings across different periods, tree species, and forest reserves (Pečka, Šumik, Rajhenavski Rog), as well as to assess the impact of the deer browsing on seedling survival success across tree species. In each reserve, 20 plots were established. On each plot, there was one seed trap, a cage to protect against browsing, and a control plot. The study utilized newly collected data as well as data from previous years, which were combined and analyzed. It was found that in the Pečka and Rajhenavski Rog reserves, beech predominated in terms of the number of seedlings. However, its survival rate was the lowest among all tree species. In the Šumik reserve, the large number of spruce seedlings and their extremly low survival rate were surprising. The best results were found for maple seedlings. At the end of the study, no statistically significant relationship for seedling survival was found between the control plots and the caged plots for fir, which we expected to have reduced survival due to browsing. During the survey, we observed considerable browsing by insects and snails, particularly on beech seedlings. Overall, the study highlights large year-to-year variability in seedling establishment and high mortality of first year seedlings, indicating that longer time windows are needed to understand drivers of seedling dynamics. Pečka Šumik Rajhenavski Rog preživetje klic pragozdovi pomlajevanje Pečka Šumik Rajhenavski Rog seedling survival virgin forests regeneration true false false [N. Borštnar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-02-14 07:16:01 2025-02-14 07:16:16 2025-02-15 04:13:18 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*18:630*231(253)(043.2)=163.6 256055 226123267 45740.pdf 45740.pdf 1 495B207BC7EEE19357588E5929F9C678 3d34f5ee0d7540b2c28434be850f0226da89fdaaf465aca3302f34b16cd07342 50c3b7d6-ea9a-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=199641 Biotehniška fakulteta 0 0 0