71. Študija potencialnih vplivov postavitve in delovanja vetrnih elektrarn na gozd - predstavitev rezultatov investitorju, 19. 6. 2019Andreja Ferreira, Marko Kovač, Lado Kutnar, Aleksander Marinšek, Anže Martin Pintar, Ajša Alagić, Boštjan Pokorny, 2019, treatise, preliminary study, study Keywords: gozdni sestoji, lesna zaloga, zgradba sestojev, poseg, potencialni vplivi, gozdovi, posegi v prostor, potencialni vplivi na okolje, vpliv na okolje, gozdni prostor
Published in DiRROS: 16.12.2019; Views: 2059; Downloads: 50 |
72. Študija potencialnih vplivov postavitve in delovanja vetrnih elektrarn na gozdAndreja Ferreira, Marko Kovač, Lado Kutnar, Aleksander Marinšek, Anže Martin Pintar, Ajša Alagić, Boštjan Pokorny, 2019, treatise, preliminary study, study Keywords: gozdovi, posegi v prostor, potencialni vplivi na okolje, vpliv na okolje, gozdni prostor
Published in DiRROS: 16.12.2019; Views: 2066; Downloads: 39 |
73. Evaluating short-term impacts of forest management and microsite conditions on understory vegetation in temperate fir-beech forests : floristic, ecological, and trait-based perspectiveJanez Kermavnar, Aleksander Marinšek, Klemen Eler, Lado Kutnar, 2019, original scientific article Abstract: Forest understory vegetation is largely influenced by disturbances and given local abiotic conditions. Our research focuses on the early response of understory vegetation to various forest management intensities in Dinaric fir-beech forests in Slovenia: (i) control, (ii) 50% cut of stand growing stock, and (iii) 100% cut of stand growing stock. Apart from identifying overstory removal effects, we were interested in fine-scale variation of understory vegetation and environmental determinants of its species composition. Vegetation was sampled within 27 karst sinkholes, which represent a dominant landform in studied forests. Within each sinkhole, five sampling plots, varying in slope aspect (centre, north, east, south, west), were established (135 in total), where pre-treatment (in 2012) and post-treatment (in 2014) floristic surveys were conducted. The sampled understory species were characterized in terms of Ellenberg's indicator values (EIVs) and plant functional traits (plant height, seed mass, specific leaf area, leaf dry matter content). Diversity metrics (species richness, total cover, Shannon index) increased in plots where the silvicultural measures were applied. Tree species richness also increased in 100% cutting. A redundancy analysis revealed that species composition was related to environmental variables, which are directly influenced by management interventions (overstory canopy cover, microclimate maximum daily temperature, soil properties thickness of organic soil layer) as well as by topographic factors (slope inclination and surface rockiness). EIVs for light were significantly affected by treatment intensity, whereas soil-related EIVs (moisture, reaction, nutrients) depended more on the within-sinkhole position. Canopy gaps, compared with uncut control plots, hosted a higher number of colonizing species with a higher plant height and smaller seeds, while leaf traits did not show a clear response. We found a negative correlation between pre-treatment species (functional) richness and post-treatment shifts in floristic (functional) composition. Plots with higher richness exhibited smaller changes compared with species-poor communities. Incorporating different perspectives, the results of this study offer valuable insights into patterns of understory vegetation response to forest management in fir-beech forests.
Keywords: canopy gap, microsite environment, Ellenberg indicator values, plant functional traits, compositional resistance, karst topography, fir-beech forest
Published in DiRROS: 06.12.2019; Views: 2477; Downloads: 1550
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74. Effects of disturbance on understory vegetation across Slovenian forest ecosystemsLado Kutnar, Thomas Andrew Nagel, Janez Kermavnar, 2019, original scientific article Abstract: The herbaceous understory represents a key component of forest biodiversity across temperate forests of Europe. Here, we quantified changes in the diversity and composition of the forest understory layer in representative Slovenian forest ecosystems between 2004/05 and 2014/15. In total, 60 plots were placed across 10 different managed forest types, ranging from lowland deciduous and mid-altitude mesic mixed forests to mountain conifer forests. This network is part of an international network of sites launched within the ICP Forests Programme aimed to assess the condition of forests in Europe. To examine how disturbance influenced understory dynamics, we estimated the disturbance impacts considering both natural and/or anthropogenic disturbances that cause significant damage to trees and to ground-surface layers, including ground-vegetation layers and upper-soil layers. Species richness across 10 sites (gamma diversity) significantly decreased from 272 to 243 species during the study period, while mean species richness per site did not significantly change. The mean value of site level Shannon diversity indices and evenness significantly increased. The cover of most common plant species increased during the monitoring period. The mean value of disturbance estimates per site increased from 0.8% in 2004/05 (ranging from 0% to 2.5%) to 16.3% in 2014/15 (ranging from 5.0% to 38.8%), which corresponded to a reduction in total vegetation cover, including tree-layer cover. More disturbed sites showed larger temporal changes in species composition compared to less disturbed sites, suggesting that forest disturbances caused understory compositional shifts during the study period. Rather than observing an increase in plant diversity due to disturbance, our results suggest a short-term decrease in species number, likely driven by replacement of more specialized species with common species.
Keywords: vegetation dynamics, vascular-plant diversity, understory layer, disturbance, monitoring, temperate forests
Published in DiRROS: 27.11.2019; Views: 2333; Downloads: 1425
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75. Raziskovalno delo kot del javne gozdarske službeNike Krajnc, Primož Simončič, Lado Kutnar, Daniel Žlindra, Barbara Piškur, Nikica Ogris, Hojka Kraigher, Gregor Božič, Mitja Skudnik, Matevž Triplat, 2019, professional article Abstract: Skladno z Zakonom o gozdovih del Javne gozdarske službe (JGS) opravlja tudi Gozdarski inštitut Slovenije (GIS). Aktivnosti JGS na GIS so usmerjene predvsem v strokovno podporo Ministrstvu za kmetijstvo, gozdarstvo in prehrano ter Zavodu za gozdove Slovenije. Področja dela JGS / GIS so naslednja: spremljanje stanja razvrednotenja in poškodovanosti gozdov, usmerjanje in strokovno vodstvo poročevalske, prognostično-diagnostične službe za gozdove, strokovno usmerjanje gozdne semenarske in drevesničarske dejavnosti, razvoj informacijskega sistema za gozdove, priprava strokovnih podlag za opravljanje del v gozdovih. GIS v okviru JGS opravlja tudi javna pooblastila. V 25 letih obstoja JGS/GIS so se nabrali številni dosežki ter za slovensko gozdarstvo pomembni rezultati. V prispevku predstavljamo poudarke JGS/GIS, za katere menimo, da so aktualni in zanimivi za strokovno javnost.
Keywords: gozdarstvo, javna gozdarska služba, raziskovalna dejavnost, Gozdarski inštitut Slovenije, javna gozdarska služba
Published in DiRROS: 16.11.2019; Views: 2629; Downloads: 720
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76. Invazivna tujerodna rastlinska vrsta kudzu (Pueraria montana var. lobata) je potencialna grožnja za slovenske gozdoveJanez Kermavnar, Lado Kutnar, Aleksander Marinšek, Jana Kus Veenvliet, Maarten De Groot, 2019, professional article Abstract: Kudzu (Pueraria montana var. lobata) je invazivna tujerodna rastlinska vrsta, za katero v Sloveniji do pred nedavnim ni bilo podatkov o pojavljanju v naravi. Poleti 2018 sta bili v informacijskem sistemu Invazivke (www.invazivke.si) potrjeni prvi najdbi kudzuja pri nas v naravnem okolju. V tej podatkovni bazi se kot podpora za sistem zgodnjega obveščanja in hitrega odzivanja (ZOHO), ki se razvija v sklopu projekta LIFE ARTEMIS, zbirajo podatki o invazivnih tujerodnih vrstah pri nas. Obe nahajališči kudzuja sta v submediteranskem fitogeografskem območju Slovenije, v bližini Strunjana in v Dekanih. Namen članka je predstaviti osnovne značilnosti invazivne rastlinske vrste, ki pri nas ni dobro znana. V prispevku opozarjamo tudi na potencialne negativne vplive, ki bi jih kudzu lahko povzročil z nenadzorovanim širjenjem, predvsem v gozdnem prostoru. Na ravni EU je kudzu zaradi potencialnih škodljivih vplivov na okolje uvrščen med tiste invazivne tujerodne vrste, za katere morajo države članice sprejeti takojšnje stroge ukrepe za odstranitev oziroma preprečitev širjenja. Zgodnje obveščanje in hitro odzivanje v začetnih fazah širjenja sta ključni dejavnosti, ki bistveno pripomoreta k učinkovitemu zmanjševanju negativnih vplivov invazivnih tujerodnih vrst.
Keywords: kudzu, Pueraria montana var. lobata, invazivne tujerodne vrste, Invazivke.si, gozdovi, Slovenija
Published in DiRROS: 20.03.2019; Views: 3274; Downloads: 933
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77. Gozdnogospodarski načrti gozdnogospodarskih enot : stanje in priporočila za njihovo izboljšanje : sintezno poročilo o primernosti osnutkov gozdnogospodarskih načrtov gozdnogospodarskih enotMarko Kovač, Špela Planinšek, Lado Kutnar, Hojka Kraigher, 2018, final research report Keywords: gozdarstvo, gozdnogospodarski načrti, gozdnogospodarske enote, sistemi načrtovanja, Slovenija
Published in DiRROS: 29.01.2019; Views: 2654; Downloads: 843
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78. Strokovno mnenje o osnutku gozdnogospodarskega načrta za GGE Vzhodno Pohorje (2016-2025)Marko Kovač, Špela Planinšek, Lado Kutnar, Hojka Kraigher, 2018, expertise, arbitration decision Keywords: gozdnogospodarki načrti, sistem načrtovanja, gozdnogospodarska enota, Pohorje, Slovenija
Published in DiRROS: 08.10.2018; Views: 2476; Downloads: 89 |
79. Strokovno mnenje o osnutku gozdnogospodarskega načrta za GGE Pokljuka (2016-2025)Marko Kovač, Lado Kutnar, Špela Planinšek, Hojka Kraigher, 2018, expertise, arbitration decision Keywords: gozdnogospodarki načrti, sistem načrtovanja, gozdnogospodarska enota, Pokljuka, Slovenija
Published in DiRROS: 08.10.2018; Views: 2235; Downloads: 88 |
80. Strokovno mnenje o osnutku gozdnogospodarskega načrta za GGE Idrija II (2018-2027)Špela Planinšek, Marko Kovač, Lado Kutnar, Hojka Kraigher, 2018, expertise, arbitration decision Keywords: gozdnogospodarki načrti, sistem načrtovanja, gozdnogospodarska enota, Idrija, Slovenija
Published in DiRROS: 08.10.2018; Views: 2706; Downloads: 110 |
