1. Comparing carbon fluxes between different stages of secondary succession of a karst grasslandMitja Ferlan, G. Alberti, Klemen Eler, Franc Batič, Alessandro Peressotti, Francesco Miglietta, A. Zaldei, Primož Simončič, Dominik Vodnik, 2011 DiRROS - Objavljeno: 12.07.2017; Ogledov: 2030; Prenosov: 807
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2. Testni primeri pridobivanja zelenih sekancev :
tehnološki, okoljski in ekonomski vidikiNike Krajnc, Matevž Triplat, Mitja Piškur, Jaka Klun, Robert Robek, Tine Premrl, Klemen Eler, Milan Kobal, Primož Simončič, 2013 Ključne besede: lesni sekanci, tehnološki modeli, proizvodnja, gozdna biomasa
DiRROS - Objavljeno: 12.07.2017; Ogledov: 1832; Prenosov: 517
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4. Možnosti in omejitve pridobivanja biomase iz gozdov :
zaključno poročilo projekta (V2-1126)Primož Simončič, Klemen Eler, Milan Kobal, Matevž Triplat, Iztok Sinjur, Daniel Žlindra, Matevž Mihelič, Robert Roblek, Mitja Piškur, Jaka Klun, Tine Premrl, Nike Krajnc, 2014 Ključne besede: lesna biomasa, zeleni sekanci, hranila, poškodbe tal, tehnološki modeli, časovne študije
DiRROS - Objavljeno: 12.07.2017; Ogledov: 1885; Prenosov: 510
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5. Poročilo o projektni nalogi ManFor C.BD LIFE09ENV/IT/000078, Mejnik 5 :
po pogodbi o sofinanciranju projektne naloge LIFE09ENV/IT/000078 "Managing forests for multiple purposes: carbon, biodiversity and socio-economic wellbeing" :
št.: MOP 2511-11-25-0026Lado Kutnar, Mitja Ferlan, Andrej Kobler, Maarten De Groot, Urša Vilhar, Marko Kovač, Mitja Skudnik, Matjaž Čater, Aleksander Marinšek, Andreja Ferreira, Boštjan Mali, Špela Planinšek, Milan Kobal, Gregor Meterc, Tom Levanič, Tine Grebenc, Daniel Žlindra, Iztok Sinjur, Saša Vochl, Klemen Eler, Maja Jurc, Andrej Breznikar, Primož Simončič, 2015 Ključne besede: gospodarjenje z gozdom, biotska raznovrstnost, sestoji, odmrli les, ogljik, dinarsko jelovi-bukovi gozdovi, ManFor, Slovenija
DiRROS - Objavljeno: 12.07.2017; Ogledov: 1898; Prenosov: 502
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6. On the use of R programming language in the analyses of spatial dataMilan Kobal, Andrej Ceglar, Klemen Eler, Barbara Medved Cvikl, Luka Honzak, Primož Simončič, David Hladnik, 2013 Povzetek: R is a powerful and increasingly popular programming language with strong graphical and presentation features and large expanŽdability. Although primarily intended for statistical computing, R has paved its way to the field of GIS through the development of specialized extension packages. It offers a wide range of functions at all GIS levels: data acquisition, data manipulation, graphical reŽpresentation and quantitative analysis. The paper presents R as an open source alternative to the existing commercial GIS software. It proves especially well when advanced quantitative methods on spatial data are needed (e.g. spatial modelling). We demonstrate R capabilities through spatial analysis of forest area in Snežnik (South Slovenia), where the possibilities of data import, conversion and export into various GIS formats and possibilities of geostatistics, spatial modelling and spatial visualization are demonstrated.
DiRROS - Objavljeno: 12.07.2017; Ogledov: 2231; Prenosov: 1121
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8. Estimation of carbon fluxes from Eddy covariance data and satellite-derived vegetation indices in a Karst grassland (Podgorski Kras, Slovenia)Giorgio Alberti, Klemen Eler, Mitja Ferlan, Koffi Dodji Noumonvi, Alessandro Peressotti, Sofia Cerasoli, 2019 Ključne besede: eddy covariance, carbon flux, GPP, NEE, vegetation indices, remote sensing, satellite data, GPP map
DiRROS - Objavljeno: 10.04.2019; Ogledov: 1316; Prenosov: 747
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9. 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 Povzetek: 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.
Ključne besede: canopy gap, microsite environment, Ellenberg indicator values, plant functional traits, compositional resistance, karst topography, fir-beech forest
DiRROS - Objavljeno: 06.12.2019; Ogledov: 997; Prenosov: 666
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10. Mikroklimatske razmere v sestojih in vrzelih dinarskih jelovobukovih gozdov Slovenije z vidika podnebnih spremembLado Kutnar, Andrej Kobler, Klemen Eler, Aleksander Marinšek, Mitja Ferlan, Janez Kermavnar, 2019 Povzetek: Dinarski jelovo-bukovi gozdovi so eden glavnih gozdnih vegetacijskih tipov v Sloveniji, v katerih so se v zadnjem obdobju zaradi naravnih ujm spremenile ekološke razmere. Namen raziskave je bila analiza izbranih spremenljivk mikroklime (temperatura zraka, relativna zračna vlaga) v strnjenih sestojih, v presvetljenih sestojih in v sestojnih vrzelih na treh raziskovalnih območjih (Trnovski gozd, Snežnik, Kočevski rog). Za strnjene sestoje je bila značilna visoka stopnja zastiranja tal s krošnjami dreves ( ~ 95 %). Sestojne vrzeli so nastale s posekom vseh dreves na krožni površini 0,4 ha, v presvetljenih sestojih pa je bila posekana približno polovica lesne zaloge gozdnega sestoja. Ukrepi so bili izvedeni leta 2012, meritve meteoroloških spremenljivk pa smo opravili prvo (2013) in drugo (2014) leto po sečnji. Primerjali smo, kako se mikroklimatske razmere v sestojih in vrzelih spreminjajo v vegetacijski sezoni (maj-oktober) in kakšne so razlike med dvema meteorološko razmeroma različnima poletjema v letih 2013 (več vročinskih valov, poletna suša) in 2014 (nestanovitno vreme z relativno veliko količino padavin). Izmerjene najvišje dnevne temperature zraka (Tmax) so bile izrazito višje v vrzelih kot v sestoju, v povprečju za 3,6 °C; najnižja relativna zračna vlaga (RVmin) pa je bila nižja, v povprečju za 15,0 odstotnih točk. Razlike v obeh spremenljivkah med sestoji in vrzelmi so bile največje v poletnih mesecih (junij-avgust) leta 2013 (Tmax: 4,9 °C; RVmin: -19,7 odstotnih točk), ki je bilo razmeroma vroče in sušno. Na podlagi meritev meteoroloških spremenljivk in zastora drevesnih krošenj (podatki LiDARskega snemanja) v presvetljenih sestojih smo ugotovili statistično značilno negativno linearno povezavo med zastorom drevesnih krošenj in Tmax ter pozitivno povezavo med zastorom krošenj in vrednostmi RVmin. Rezultate analiz smo prikazali v luči potencialnih vplivov podnebnih sprememb, katerim so dinarski jelovo-bukovi gozdovi zaradi kombinacije neugodnih dejavnikov npr. zmanjšana mehanska in biološka stabilnost sestojev zaradi velikopovršinskih motenj, poletne suše, vodoprepusten kraški teren ter pogosto plitva tla z majhno sposobnostjo zadrževanja vode - še posebej izpostavljeni.
Ključne besede: dinarski jelovo-bukovi gozdovi, temperatura zraka, relativna zračna vlaga, sestojne vrzeli, zastor krošenj dreves, podnebne spremembe, Slovenija
DiRROS - Objavljeno: 20.12.2019; Ogledov: 1098; Prenosov: 351
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