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Distribution and phylogeography of the genus Mattirolomyces with a focus on the Asian M. terfezioides haplotypes
J. Wei, Tine Grebenc, Xuan Zhang, SiMin Xiang, Yongjun Fan, 2022

Povzetek: Mattirolomyces is an edible commercial sequestrate genus that is globally distributed. From the five described taxa of this genus, Mattirolomyces terfezioides is the most common species in Asia. Our recent attempts to locate M. terfezioides outside its current distribution area in China documented its first records in areas of poplar trees with the lowest known temperature and precipitation averages ever recorded for this species. This peculiar ecology was not reflected on the species-morphological features nor on its phylogenetic position in the genus. The first attempt to apply the phylogenetic network approach to Mattirolomyces revealed its geographic origin in the Asian-Pacific areas prior to frequent long-distance migration events. Based on data from recent study areas, we found that the collections from Inner Mongolia and the Shanxi province were similar to European collections. Asian haplotypes were less distant from the outgroup comparing to collections from Europe, supporting the hypothesis that M. terfezioides was originated from this Chinese area and was subsequently transported to Europe. Exploring M. terfezioides ecology and its mycorrhiza potential to grow in association with poplars would be of great importance for planning cultivation projects of this valuable desert truffle species in Central and Eastern China, a currently underexploited economic sector that deserves further ecological and M. terfezioides mycorrhizal synthesis investigations.
Ključne besede: biodiversity, biogeography, mycology, Mattirolomyces terfezioides, Desert truffle, Inner Mongolia, phylogeography
DiRROS - Objavljeno: 05.08.2022; Ogledov: 21; Prenosov: 11
.pdf Celotno besedilo (11,81 MB)

Turkey oak (Quercus cerris L.) is more drought tolerant and better reflects climate variations compared to pedunculate oak (Quercus robur L.) in lowland mixed forests in northwestern Serbia : ǂa ǂstable carbon isotope ratio (δ13C) and radial growth approach
Dejan Stojanović, Bratislav Matović, Saša Orlović, Tom Levanič, Saša Kostić, 2022

Povzetek: Tree-ring width (TRW), stable carbon isotope ratio (δ13C) and intrinsic water use efficiency (iWUE) data set chronologies were built for the period 1961–2000 for two oak species (pedunculate oak – Quercus robur L. and Turkey oak – Quercus cerris L.) in northwestern Serbia (Vojvodina province). We focused on the response of the two oak species to measured meteorological data (temperature, precipitation and cloud cover), drought events expressed by six meteorological drought indices, and river water level to better understand their drought tolerance and stress and to assess the reliability of the species response to climate and drought indices when using TRW or δ13C. Turkey oak exhibited better drought tolerance (and less drought stress) compared to pedunculate oak, as manifested, respectively, by less negative δ13C and lower iWUE values. Based on a generalised additive mixed model (GAMM) among the six drought indices studied, the standardised precipitation evapotranspiration index and the standardised precipitation index showed the best fit with both TRW and δ13C, while the Palmer drought severity index exerted a strong influence only on TRW. It was thus concluded that δ13C responds more strongly and rapidly to climate variations than TRW.
Ključne besede: dendrochronology, stable carbon isotope, tree ring, Quercus robur, Quercus cerris, drought, climate change
DiRROS - Objavljeno: 04.08.2022; Ogledov: 24; Prenosov: 18
.pdf Celotno besedilo (5,19 MB)

Do konca aprila že 31 nezgod in 7 mrtvih
Urban Žitko, 2022

Ključne besede: nezgode, prometne nesreče, delovne nezgode, varnost pri delu, delo v gozdu
DiRROS - Objavljeno: 02.08.2022; Ogledov: 41; Prenosov: 19
.pdf Celotno besedilo (5,54 MB)

Češka : cene okroglega lesa najvišje v zadnjih 20 letih
Špela Ščap, 2022

Ključne besede: okrogli les, cene, iglavci, Češka
DiRROS - Objavljeno: 02.08.2022; Ogledov: 28; Prenosov: 12
.pdf Celotno besedilo (5,53 MB)

Obiskali smo podjetje Breza Commerce, d. o. o.
Špela Ščap, Janez Zafran, 2022

Ključne besede: rezan les, odkup hlodovine, nabava, priprava, sušenje, prodaja
DiRROS - Objavljeno: 02.08.2022; Ogledov: 34; Prenosov: 21
.pdf Celotno besedilo (5,53 MB)

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