11. Poročilo o preskusu št.: LVG 2021-320 : opis vzorca: Quercus robur, listi : namen testiranja: sum na: GlivaNikica Ogris, Špela Jagodic, Zina Devetak, Tašja Cvelbar, Barbara Piškur, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, glive, hrast, Quercus robur Objavljeno v DiRROS: 26.10.2021; Ogledov: 660; Prenosov: 192 Celotno besedilo (1000,06 KB) |
12. Poročilo o preskusu št.: LVG 2021-319 : opis vzorca: Quercus, listi : namen testiranja: sum na: GlivaNikica Ogris, Špela Jagodic, Zina Devetak, Tašja Cvelbar, Barbara Piškur, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, glive, hrast, Quercus Objavljeno v DiRROS: 26.10.2021; Ogledov: 604; Prenosov: 173 Celotno besedilo (1000,42 KB) |
13. Poročilo o preskusu št.: LVG 2021-318 : opis vzorca: LVG2021/00559/NO: Quercus, listi, LVG2021/00560/NO: Quercus, listi : namen testiranja: LVG2021/00559/NO: drugo: Gliva, LVG2021/00560/NO: drugo: GlivaNikica Ogris, Špela Jagodic, Tašja Cvelbar, Zina Devetak, Barbara Piškur, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, glive, hrast, Quercus Objavljeno v DiRROS: 26.10.2021; Ogledov: 642; Prenosov: 198 Celotno besedilo (228,75 KB) |
14. Poročilo o preskusu št.: LVG 2021-281 : opis vzorca: Quercus rubra, listi : namen testiranja: sum na: Taphrina caerulescensNikica Ogris, Zina Devetak, Tašja Cvelbar, Barbara Piškur, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Taphrina caerulescens, mehurjenje hrastovih listov, Quercus rubra, rdeči hrast Objavljeno v DiRROS: 18.10.2021; Ogledov: 565; Prenosov: 172 Celotno besedilo (999,79 KB) |
15. Poročilo o preskusu št.: LVG 2021-177 : opis vzorca: Quercus petraea, les, lubje, sekanci, št. enot 5 : namen testiranja: sum na: Xylosandrus crassiusculusAndreja Kavčič, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Quercus petraea, Xylosandrus crassiusculus Objavljeno v DiRROS: 24.09.2021; Ogledov: 636; Prenosov: 0 |
16. Poročilo o preskusu št.: LVG 2021-166 : opis vzorca: Quercus robur, cela rastlina : namen testiranja: sum na: Erysiphe alphitoidesNikica Ogris, Andreja Kavčič, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Quercus robur, dob, hrastova pepelovka, Erysiphe alphitoides Objavljeno v DiRROS: 13.09.2021; Ogledov: 823; Prenosov: 217 Celotno besedilo (3,13 MB) |
17. Poročilo o preskusu št.: LVG 2021-148 : opis vzorca:11895527: Tilia platyphyllos, cela rastlina, 11895510: Castanea sativa, cela rastlina, 11895503: Quercus, cela rastlina, 11895497: Acer, veja (z listi ali brez) ali poganjki, 11895480: Carpinus betulus, veja (z listi ali brez) ali poganjki, 11895473: Pinus, veja (z listi ali brez) ali poganjki : namen testiranja: 11895527: sum na: Gliva, 11895510: sum na: Gliva, 11895503: sum na: Gliva, 11895497: sum na: Gliva, 11895480: sum na: Gliva, 11895473: sum na: GlivaNikica Ogris, Tašja Cvelbar, Špela Jagodic, Zina Devetak, Andreja Kavčič, Barbara Piškur, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, beli gaber, pravi kostanj, hrast, javor, bor, lipa, Tilia platyphyllos, Castanea sativa, Quercus, Acer, Carpinus betulus, Pinus, Fusarium Alternaria, Phomopsis, Paraphaeosphaeria, Dendrostoma leiphaemia, Epicoccum, Melanconiella chrysodiscosporina, Pissodes, Sydowia polyspora, Pestalotiopsis, poškodbe, bolezni Objavljeno v DiRROS: 17.08.2021; Ogledov: 771; Prenosov: 276 Celotno besedilo (232,24 KB) |
18. Poročilo o preskusu št.: LVG 2021-065 : opis vzorca: Quercus rubra, veja (z listi ali brez) ali poganjki : namen testiranja: sum na: GlivaNikica Ogris, 2021, izvedensko mnenje, arbitražna odločba Ključne besede: varstvo gozdov, morfološke analize, Quercus rubra, rdeči hrast, Phomopsis, sušni stres, glive Objavljeno v DiRROS: 19.07.2021; Ogledov: 763; Prenosov: 227 Celotno besedilo (995,85 KB) |
19. 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, izvirni znanstveni članek Povzetek: 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. Ključne besede: climate change, Fagus sylvatica, long-term monitoring, mast fruiting, Quercus petraea, Quercus robur, resource dynamics Objavljeno v DiRROS: 15.07.2021; Ogledov: 861; Prenosov: 636 Celotno besedilo (7,63 MB) Gradivo ima več datotek! Več... |
20. First report of European truffle ectomycorrhiza in the semi%arid climate of Saudi ArabiaSeema R. Bajaj, Sandesh J. Marathe, Tine Grebenc, Alessandra Zambonelli, Salem Shamekh, 2021, izvirni znanstveni članek Povzetek: Tuber melanosporum Vittad. (Black or Périgord truffle) is a truffle native to the Mediterranean Southern Europe, popular for its unique flavor, and has great economic importance. The present work focused on assessing the possibility of cultivating T. melanosporum associated with Quercus robur L. in the desert climate of Saudi Arabia. The plantation was initiated in November 2018 by planting 271 oak seedlings in the Al-Qassim desert area and checked for survival and ectomycorrhiza development after 1.5 years of plantation maintenance. Amongst the 271 seedlings planted, 243 plants survived two harsh seasons (2019 and 2020), and the randomly selected and tested seedlings were still mycorrhized with T. melanosporum. The mycorrhization level with T. melanosporum was between 5 and 35% of all fine roots, and the share of contaminant ectomycorrhiza was low. In comparison to other areas where T. melanosporum is successfully cultivated, the Al-Qassim desert area has 10%15 °C higher average summer temperatures and a low total annual precipitation, which necessitates regular irrigation of the plantation. This work opens the avenue for an adapted, yet sustainable cultivation of T. melanosporum-inoculated oak tree in a desert climatic condition and introduces new opportunities of the agro-forest business in Saudi Arabia and GCC region. Ključne besede: Tuber melanosporum, Quercus robur, Desert climate, Truffle cultivation, Ectomycorrhiza Objavljeno v DiRROS: 26.01.2021; Ogledov: 1068; Prenosov: 281 Povezava na datoteko |