61. Poročilo o spremljanju stanja gozdov za leto 2021 : vsebinsko poročilo o spremljanju stanja gozdov v skladu s Pravilnikom o varstvu gozdov (2009)Mitja Ferlan, Andrej Grah, Janez Kermavnar, Lado Kutnar, Nikica Ogris, Anže Martin Pintar, Matej Rupel, Primož Simončič, Mitja Skudnik, Urša Vilhar, Daniel Žlindra, 2022, final research report Keywords: varstvo gozdov, monitoring, stanje gozdov, zdravstveno stanje krošenj, popis povzročiteljev poškodb, meteorološke meritve, osutost dreves, poročila, Slovenija Published in DiRROS: 01.07.2022; Views: 892; Downloads: 297 Full text (10,68 MB) |
62. Nacionalna gozdna inventura : interna navodila za terensko delo (2020-2024) : (ver. 02 / 2022) : dopolnitve 13. 5. 2022Mitja Skudnik, Jure Žlogar, Aleš Poljanec, Rok Pisek, Anže Martin Pintar, Gal Kušar, Matjaž Guček, Andrej Grah, Marko Kovač, 2020, dictionary, encyclopaedia, lexicon, manual, atlas, map Keywords: nacionalna gozdna inventura, monitoring, terenske meritve, trajne vzorčne ploskve, navodila Published in DiRROS: 07.06.2022; Views: 1133; Downloads: 445 Full text (4,71 MB) |
63. Stanje slovenskih gozdov : poročilo o rezultatih nacionalne gozdne inventure 2020 : prvi panel vzorčne mrežeMitja Skudnik, Gal Kušar, Jernej Jevšenak, Anže Martin Pintar, 2022, treatise, preliminary study, study Keywords: gozdovi, gozdarstvo, monitoring, nacionalna gozdna inventura, odmrla lesna biomasa, temeljnica, površina gozda, lesna zaloga, vzorčne ploskve, poročila Published in DiRROS: 15.03.2022; Views: 1065; Downloads: 0 |
64. Infiltration processes in karst aquifers affected by large-scale forest disturbancesUrša Vilhar, Mitja Ferlan, Janez Kermavnar, Erika Kozamernik, Aleksander Marinšek, Metka Petrič, Tanja Pipan, Daniel Žlindra, Nataša Ravbar, 2021, published scientific conference contribution abstract Keywords: karst hydrogeology, global environmental changes, large-scale forest disturbances, aquifer recharge, water monitoring Published in DiRROS: 03.12.2021; Views: 1352; Downloads: 849 Full text (277,79 KB) This document has many files! More... |
65. Stanje in spremembe slovenskih gozdov med letoma 2000 in 2018 : rezultati velikoprostorskega monitoringa gozdov in gozdnih ekosistemovMitja Skudnik, Andrej Grah, Matjaž Guček, David Hladnik, Jernej Jevšenak, Marko Kovač, Gal Kušar, Boštjan Mali, Anže Martin Pintar, Rok Pisek, Špela Planinšek, Aleš Poljanec, Primož Simončič, 2021, professional monograph Keywords: gozdovi, gozdarstvo, monitoring gozdov, Slovenija, stanje gozdov, zaloga lesa, lesna biomasa, odmrla biomasa, ogljik, posek, prirastek lesa, velikoprostorska gozdna inventura Published in DiRROS: 19.10.2021; Views: 3231; Downloads: 1688 Link to full text This document has many files! More... |
66. Poročilo o spremljanju stanja gozdov za leto 2020Mitja Skudnik, Mitja Ferlan, Andrej Grah, Janez Kermavnar, Lado Kutnar, Nikica Ogris, Anže Martin Pintar, Špela Planinšek, Matej Rupel, Primož Simončič, Daniel Žlindra, 2021, final research report Keywords: varstvo gozdov, monitoring, stanje gozdov, zdravstveno stanje krošenj, popis povzročiteljev poškodb, meteorološke meritve, osutost dreves, poročila, Slovenija Published in DiRROS: 20.07.2021; Views: 1266; Downloads: 463 Full text (15,19 MB) |
67. Contrasting resource dynamics in mast years for European Beech and Oak - a continental scale analysisAnita Nussbaumer, Arthur Gessler, Sue Benham, B. De Cinti, Sophia Etzold, Morten Ingerslev, Frank Jacob, François Lebourgeois, Tom Levanič, Hrvoje Marjanović, 2021, original scientific article Abstract: Resource allocation to different plant tissues is likely to be affected by high investment into fruit production during mast years. However, there is a large knowledge gap concerning species-specific differences in resource dynamics. We investigated the influence of mast years on stem growth, leaf production, and leaf carbon (C), nitrogen (N), and phosphorus (P) concentrations and contents in Fagus sylvatica, Quercus petraea, and Q. robur at continental and climate region scales using long-term data from the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) and similar datasets. We discussed the results in the light of opposing resource dynamics hypotheses: (i) resource accumulation before mast years and exhaustion after mast years (resource storage hypothesis), (ii) shifting resources from vegetative to generative compartments (resource switching hypothesis), and (iii) investing resources concurrently in both vegetative and generative compartments (resource matching hypothesis). Linear mixed-effects modelling (LMM) showed that both stem growth and leaf production were negatively influenced by weather conditions which simultaneously lead to high fruit production. Thus, the impact of generative on vegetative growth is intermixed with effects of environmental factors. Superposed epoch analyses and LMM showed that for mast behaviour in F. sylvatica, there are indicators supporting the resource storage and the resource switching hypotheses. Before mast years, resources were accumulated, while during mast years resources switched from vegetative to generative tissues with reduced stem and leaf growth. For the Quercus species, stem growth was reduced after mast years, which supports the resource storage hypothesis. LMM showed that leaf C concentrations did not change with increasing fruit production in neither species. Leaf N and P concentrations increased in F. sylvatica, but not in Quercus species. Leaf N and P contents decreased with increasing fruit production in all species, as did leaf C content in F. sylvatica. Overall, our findings suggest different resource dynamics strategies in F. sylvatica and Quercus species, which might lead to differences in their adaptive capacity to a changing climate. Keywords: climate change, Fagus sylvatica, long-term monitoring, mast fruiting, Quercus petraea, Quercus robur, resource dynamics Published in DiRROS: 15.07.2021; Views: 1065; Downloads: 755 Full text (7,63 MB) This document has many files! More... |
68. Stanje in spremembe slovenskih gozdov v zadnjih dveh desetletjih - rezultati velikoprostorskega monitoringa gozdovMitja Skudnik, Jernej Jevšenak, Aleš Poljanec, Gal Kušar, 2021, original scientific article Abstract: V prispevku so predstavljeni rezultati velikoprostorskega monitoringa gozdov in gozdnih ekosistemov (MGGE), ki je na sistematični mreži trajnih vzorčnih ploskev (4 km x 4 km) prek celotne Slovenije potekal v letih 2000, 2007, 2012 in 2018. Predstavljeni so osnovni znaki o stanju (lesna zaloga in volumen odmrlih lesnih kosov) in spremembah (prirastek, posek, volumen novih sušic) slovenskih gozdov. Lesna zaloga merskega drevja se je med letoma 2000 in 2012 povečala iz 299 na 334 m3 ha-1. V letu 2018 je bila ocena za povprečno lesno zalogo 330 m3 ha-1. Vzorčna napaka ocene lesne zaloge je znašala od 4 do 5 %. Med letoma 2012 in 2018 se je predvsem zmanjšala lesna zaloga iglavcev, in sicer iz 156 na 144 m3 ha-1. Poglavitni razlog je bil povečan posek, ki je bil posledica številnih ujm in gradacij podlubnikov. Tako se je povečal posek, in sicer iz 4,3 v obdobju 2007/12 na 6.3 m3 ha-1 leto v obdobju 2012/18. K povečanemu poseku večinski delež prispevajo iglavci. V zadnjem obdobju je bil bruto prirastek z vrastjo in prirastkom posekanih dreves ocenjen na 7,9 m3 ha-1 leto. Ocena volumna odmrlih lesnih kosov za leto 2018 je znašala 24 m3 ha-1. V prispevku je podrobno predstavljena tudi metodologija izračunov ocen povprečij na podlagi sistematičnega vzorčenja. Podatki MGGE so bili uporabljeni predvsem za potrebe mednarodnega poročanja o stanju in razvoju slovenskih gozdov ter v omejenem obsegu tudi za nacionalno poročanje o trajnostnem razvoju slovenskih gozdov. Prednost vzpostavljenega sistema je mednarodno usklajena metodologija popisa na sistematični mreži ploskev preko celotne države. Trenutni sistem ima tudi določene omejitve, in sicer malo vzorčnih ploskev, kar vodi v večjo vzorčno napako pri izračunih nekaterih dendrometrijskih kazalnikov. V letu 2020 smo sistem MGGE nadgradili v kontinuiran panelni sistem, katerega osnova bodo nove trajne vzorčne ploskve na neuravnani sistematični mreži gostote 2 km x 2 km, kar je dobro izhodišče za uvedbo Nacionalne gozdne inventure (NGI) v Sloveniji. Keywords: monitoring gozdov in gozdnih ekosistemov, lesna zaloga, prirastek, mortaliteta, odmrla biomasa, posek, sušice Published in DiRROS: 12.07.2021; Views: 1536; Downloads: 569 Full text (686,93 KB) |
69. Predlogi za pravno ureditev področja upravljanja s smrekovimi podlubnikiNikica Ogris, Andreja Kavčič, Marija Kolšek, Maarten De Groot, 2021, treatise, preliminary study, study Keywords: Ips typographus, pravilnik o varstvu gozdov, osmerozobi smrekov lubadar, pasti, skladišča gozdnih lesnih sortimentov, monitoring, zatiranje, optimizacija Published in DiRROS: 29.06.2021; Views: 1093; Downloads: 0 |
70. Green space area and type affect bird communities in a South-eastern European cityMaarten De Groot, Katarina Flajšman, Tomaž Mihelič, Urša Vilhar, Primož Simončič, Andrej Verlič, 2021, original scientific article Abstract: Urbanization decreases the species richness and results in the homogenization of bird communities. Bird species are important indicator species for biodiversity and reflect the habitat quality of urban forests and other green spaces. In this study we investigated the key drivers that influence bird communities in urban forests and green spaces in the Southeastern European city of Ljubljana, Slovenia. We were interested in how the number of species, species dissimilarity and indicator species are affected by the type of green space (urban forest vs park), area of green space and type of urbanization (urban vs peri-urban areas). We sampled birds twice in 2012 in 39 standardized point counts across Ljubljana. We found that the abundance was influenced by the area of the green space. Species dissimilarity and species turnover are affected by the area and type of green space. Interestingly, the analysis showed that the species composition of peri-urban areas was similar to that of urban areas. Indicator species were found for all environmental variables. On the basis of the results, we suggest the strategy that would increase the diversity of birds and increase the stability of their populations in urban areas. Urban planners should encourage 1) both forests and parks since they harbour different species of birds, 2) larger green spaces since larger areas have species that are more typical of larger areas and 3) a mosaic of a larger number of smaller forest remnants combined with larger forest complex serving as source areas. Keywords: urban forest, bird species composition, forest remnant, urbanization, peri-urban forest, bird monitoring, species richness Published in DiRROS: 14.06.2021; Views: 1445; Downloads: 738 Full text (842,93 KB) This document has many files! More... |