20.500.12556/RUL-188566 Plenjenje razširjenega semena in uspešnost setve v visokogorskem smrekovem gozdu Postdispersal seed predation and sowing success in a high mountain Norway spruce forest Proučevali smo odstranjevanje razširjenega bukovega in smrekovega semena v visokogorskem smrekovem gozdu na območju Pahernikovih gozdov na severnem Pohorju. Namen raziskave je bil ugotoviti, kako na odstranjevanje semen vplivajo drevesna vrsta, zakritost z organsko snovjo, prostorska razporeditev enakega števila semen, položaj poskusne enote, čas ter morebitni abiotski dejavniki. Raziskava je potekala od junija 2025 do junija 2026 v treh sestojnih vrzelih in sosednjem sestoju. Semena smo nastavljali v velikih in malih posodicah ter na lesenih ploščicah, aktivnost živali pa spremljali s fotopastmi. V analizo je bilo vključenih 34.884 semen, od katerih je bilo odstranjenih 27.445 oziroma 78,7 %. Najasnejši učinek je imela zakritost semen, saj je bila odstranitev pri nezakritih semenih statistično značilno večja kot pri zakritih. Razlike med bukvijo in smreko, sestojem in vrzeljo ter različno prostorsko razporeditvijo semen niso bile statistično značilne. Odstranjevanje se je v prvih tednih hitro povečalo in ostalo visoko tudi pozneje. Fotopasti so najpogosteje zabeležile male sesalce in ptice, pogosto tudi gamsa. Rezultati kažejo, da je odstranjevanje semen pomemben začetni filter obnove. Pri setvi v podobnih visokogorskih razmerah se kot smiseln ukrep kaže zmerno prekrivanje semen in njihova razporeditev na več primernih mikrorastišč. We studied the removal of dispersed European beech and Norway spruce seeds in a high-altitude spruce forest in the Pahernik forests on northern Pohorje. The aim was to determine how seed removal is influenced by tree species, cover with organic material, spatial distribution of an equal number of seeds, experimental position, time, and possible abiotic factors. The study was conducted from June 2025 to June 2026 in three canopy gaps and adjacent stands. Seeds were placed in large and small containers and on wooden boards, while animal activity was monitored using camera traps. A total of 34,884 seeds were included in the analysis, of which 27,445, or 78.7%, were removed. The clearest effect was seed cover, as removal was significantly higher for uncovered than covered seeds. Differences between beech and spruce, between forest stand and gap, and between different spatial distributions of seeds were not statistically significant. Seed removal increased rapidly during the first weeks and remained high later in the study. Camera traps most frequently recorded small mammals and birds, while chamois was also frequently observed. The results indicate that seed removal is an important early regeneration filter. For direct seeding under similar high-altitude conditions, moderate seed covering and distribution across several suitable microsites appear to be appropriate practical measures. plenjenje semen odstranjevanje semen bukev smreka visokogorski smrekov gozd Pahernikovi gozdovi setev seed predation seed removal beech Norway spruce high-altitude spruce forest Pahernik forests sowing camera traps true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-24 08:37:00 2026-09-24 08:37:04 2026-09-25 04:28:21 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 292239 61543.pdf 61543.pdf 1 50111D40F8DC20524E16CEDB54FC3452 4fc2f28d8e0073d68cb4ba80efb351a48c16245df6304d3c427de790ed32ce86 4971968c-b7e2-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=248816 Biotehniška fakulteta 0 0 0