81. 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: 2567; Downloads: 1538
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82. 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: 2892; Downloads: 814
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83. 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: 3521; Downloads: 1006
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84. 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: 2848; Downloads: 917
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85. 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: 2657; Downloads: 89 |
86. 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: 2432; Downloads: 88 |
87. 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: 2911; Downloads: 110 |
88. Early responses of biodiversity indicators to various thinning treatments in mountain beech forestsFabio Lombardi, Stefania Di Lella, Valeria Altieri, Simone Di Benedetto, Carmen Giancola, Bruno Lasserre, Lado Kutnar, Roberto Tognetti, Marco Marchetti, original scientific article Abstract: In recent decades, the conservation of biodiversity has become one of the main areas under consideration in managing forests in an ecologically sustainable way. Forest management practices are primary drivers of diversity and may enhance or decrease forest biodiversity, according to the measures applied (thinning options). We have focused on three beech (Fagus sylvatica L.) forests across a latitudinal gradient in Italy, characterised by different structures resulting from dissimilar management. We tested the short-term effects of differently-based silvicultural intervention vs. stands where no silvicultural practices were applied on biodiversity indicators and related proxies: deadwood amounts, microhabitat density, floristic richness and life form abundance. In each study area, the occurrence of the above indicators and proxies was evaluated before and after the implementation of crop tree thinning (CTT) and thinning from below (LT) methods, comparing them with control areas where no interventions were performed. After two years, the management options resulted in different responses of the investigated parameters. The CTT increased deadwood amounts in comparison with the LT ones, while stumps increased significantly after the LT thinning. Microhabitats increased significantly where intervention was not undertaken. On the contrary, they remained unaltered after the LT treatments. CTT thinning created favourable conditions for the development of microhabitats and their proliferation in the long term. Two years after the application of the CTT thinning treatment, all forest stands demonstrated a significant increase in their floristic richness and herb layer cover. Significant differences were also found in both the frequency and cover of life forms in relation to silvicultural treatment. These findings provide a better understanding of short-term effects of silvicultural treatment useful for maintaining biodiversity in mountain beech forests.
Keywords: deadwood, microhabitats, understory vegetation, mountain forests, sustainable forest management, Italian forests
Published in DiRROS: 04.10.2018; Views: 2873; Downloads: 1858
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89. Poročilo o spremljanju stanja gozdov za leto 2017 : vsebinsko poročilo o spremljanju stanja gozdov v l. 2017 v skladu s Pravilnikom o varstvu gozdov (2009)Mitja Ferlan, Andrej Grah, Lado Kutnar, Nikica Ogris, Špela Planinšek, Matej Rupel, Primož Simončič, Iztok Sinjur, Mitja Skudnik, Daniel Žlindra, Jure Žlogar, 2018, final research report Keywords: varstvo gozdov, monitoring, meteorologija, letni prirastek, poročila
Published in DiRROS: 04.07.2018; Views: 3352; Downloads: 1128
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