In declining broadleaf forests in western Ukraine, several Phytophthora species including P. plurivora, bilorbang, polonica, gonapodyides and cactorum were recovered using soil baiting assays identified morphological molecular methods. Pathogenicity tests of selected isolates performed on black alder (Alnus glutinosa (L.) Gaerth.) silver birch (Betula pendula Roth.) to assess susceptibility the...

Alder and conifer soil were examined for Streptomyces spp. and non-filamentous bacteria antagonistic to Phellinus weirii. Conifer soil supported higher populations Streptomyces spp. and higher percentage of Streptomyces species antagonistic to P. weirii than did alder soil. The populations of non-filamentous bacteria were low in both soils. Alder soil, however, had a higher percentage of non-fi...

The goal of this study is to develop an automatic supervised classification strategy and to find the necessary data sources to perform automatic tree species classification on single tree level for a large area. The derived forest map is used in a virtual forest testbed to estimate additional forest parameters like diameter at breast height and volume at single tree and stand level. A virtual f...

This study compares phenological observations of Corylus (hazel) and Alnus (alder) flowering with airborne pollen counts of these taxa recorded using volumetric spore traps (2009-2011). The work was carried out in the Polish cities of Szczecin and Rzeszów that are located in different climatic regions. Correlations between pollen concentrations and meteorological data were investigated using Sp...

Investigation of the metabolic profile of a fungus (Epicoccum sp.) isolated from the fruiting body of the tree fungus Pholiota squarrosa led to the discovery of two novel tetramic acid derivatives, epicoccarine A (2) and B (3), as well as a new pyridone alkaloid, epipyridone (1), with an unusually cyclized side chain. It appears that 1 is biogenetically derived from the ring expansion of 2 foll...

A fundamental question of forestry is that species composition: which are present, and not. However, traditional forest measurements needed to map over large areas can be both time consuming costly. In this study, we combined airborne light detection ranging (LiDAR) data with extensive field from the Long-Term Ecosystem Productivity study located near Sappho, Washington, USA increase accuracy o...

2,4,6-Triisopropylstryrene was synthesized in a single step via the Witting Reaction from the corresponding aldehyde. The reaction of three styrene's derivatives, 2,6-dimethylstyrene, 2,4,6-trimethylstyrene, and 2,4,6- triisopropylstyrene with 4-methyl-l,2,4-triazoline-3,5-dion(M eTD) was investigated. These reactions are instantaneous at room temperature and lead to the formation of 2: 1 ...