BACKGROUND Bark and bark-containing forest residues have the potential for utilization as raw material for lignocellulosic ethanol production due to their abundance and low cost. However, the different physical properties and chemical composition of bark compared to the conventionally used wood chips may influence the spruce-to-ethanol bioconversion process. This study assesses the impact of ba...

Deciduous tree species throughout the boreal forest of North America have lighter-coloured bark than do species restricted to more southern forests. We tested the hypothesis that light-coloured bark minimizes the thawing and freezing of cambium tissue during winter that could contribute to sunscald injury. During mid-winter, maximum midday cambium temperatures of south-exposed bark of white bir...

Introduction Associations between bark beetles (Coleoptera: Curculionidae: Scolytinae, or family Scolytidae, depending on the classification used, Bright 1993; Marvaldi et al. 2002) and fungi are varied and well known, but mycophagy (fungal feeding) by bark beetles has received relatively little attention. This may be due to the rarity or relative unimportance of fungal feeding by bark beetles,...

The structures of the condensed tannins from leaf, stem bark and root bark of Acacia confusa were characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis, and their antioxidant activities were measured using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and ferric reducing/antioxidant power (FRAP) assays. The results s...

Abstract Scots pine ( Pinus sylvestris L.) is the most widely distributed species in world. In Germany, as many other European countries, it a very important both culturally and economically. Few studies have focused on bark volumes being delivered to wood industry together with roundwood, potentially valuable resource for material or energetic utilization. Therefore, logs from six different fo...

The following brief synthesis of mountain pine beetle epidemiology is based on host-beetle interaction. In the first part I briefly describe the relationship between the dynamics of lodgepole pine and mountain pine beetle. The second part describes the phases in the infestation cycle and their main characteristics. This synthesis is based on published information on infestation behaviour in wes...

Over a 10-year period we investigated redcockaded woodpecker (Picoides borealis) prey use, sources of prey, prey distribution within trees and stands, and how forest management decisions affect prey abundance in South Carolina, Alabama, Georgia, and Florida. Cameras were operated at 31 nest cavities to record nest visits with prey in 4 locations that ranged in foraging habitat from pine stands ...

Anatomical properties of pedunculate oak (Quercus robur L.) wood have not been previously investigated in Serbia, so bearing mind economic-productive and ecological significance this species, it was one the main reasons why research conducted. In paper, fibre length (FL), double cell-wall thickness (DCWT) lumen diameter (FLD) were measured from two different sites. The study conducted at sites ...

The Acacia seyal Dell family Mimosaceaeis is known locally as Talha tree. Many medicinal uses such as treatment of dysentery, leprosy, colds, diarrhea, hemorrhage, ophthalmic, intestinal ailments, rheumatic pains, colds and fevers, have been attributed to this tree. Schistosomiasis, a water-borne parasitic disease caused by Schistosome(s) a genus of digenetic trematode worms, infects man and an...