Results 51 to 60 of about 43,638 (301)

The distribution of individuals of intermediate form in the populations of Norway and Siberian spruces [PDF]

open access: yesСибирский лесной журнал, 2018
The distribution of individuals of the intermediate form of Norway spruce Picea abies (L.) H. Karst., and Siberian spruce P. obovata Ledeb., distinguished according to the metric parameters of the seed scales, was studied in extensive areas of the ...
P. P. Popov
doaj   +1 more source

Wolves and humans both shape patterns of deer browsing in a temperate forest ecosystem of Central Europe

open access: yesEcography, EarlyView.
Predator–prey interactions can trigger behavioural responses in ungulates, influencing their space‐use and foraging behaviour and, in turn, indirectly affecting browsing pressure. Changes in browsing pressure can affect plant recruitment and species composition, shaping forest regeneration through predator‐mediated trophic cascades.
Walter Di Nicola   +9 more
wiley   +1 more source

Molecular cytogenetic analysis of some Picea species from Eurasia and East Asia

open access: yesВавиловский журнал генетики и селекции
Karyotypes of seven Picea species distributed across Eurasia and East Asia were analyzed using fluorescence in situ hybridization (FISH) and DAPI fluorescent staining. For P. meyeri and P.
O. V. Goryachkina   +3 more
doaj   +1 more source

Char Layer Thickness Evolution During Structural Timber Fire Experiment and Final Density Profile

open access: yesFire and Materials, EarlyView.
ABSTRACT This paper evaluates several non‐destructive experimental methods for determining the char layer thickness and its density profile in structural timber samples exposed to standard ISO 834 fire curve experiments. Microwave echo pulse, ultrasonic echo pulse, X‐ray computed tomography, and resistance drilling were evaluated.
Fernando Pérez Pérez   +4 more
wiley   +1 more source

Lignin studies of transgenic Norway spruce [PDF]

open access: yes, 2006
An attractive objective in tree breeding is to reduce the content of lignin, or increase its extractability, to favor delignification during pulping. This study investigates the potential for lignin alterations in Norway spruce (Picea abies [L.] Karst ...
Wadenbäck, Johan
core   +1 more source

Genotypie and environmental variability in the growth and photosynthesis of Sitka spruce (Picea sitchensis [Bong,] Cam) [PDF]

open access: yes, 2005
In 1990, clonal seedlings from twelve full-sib families of Sitka spruce (Picea sitchensis (Bong.) Carr.) were planted at four contrasting sites throughout the UK; Newcastleton and Wauchope in the Scottish Borders; Scootmore m Morayshire; and Llandrindod ...
Drewitt, Hannah J.
core  

Finalisation of the European Approach to Assess the Fire Performance of Facades—Brief Information on the Outcome of the Project

open access: yesFire and Materials, EarlyView.
ABSTRACT This research was conducted within the framework of project SI2.825082, funded by the European Commission—DG GROW. The project's objective was to finalise a European approach for assessing the fire performance of façades under medium and large fire exposure conditions.
Péter Tóth   +7 more
wiley   +1 more source

Excursie în pădurile virgine din Carpații României [Excursion in virgin forests of Romanian Carpathians] [PDF]

open access: yesBucovina Forestieră, 2018
The paper is a reprint (in Romanian) of a paper published in Schweizerische Zeitschrift fur Forstwesen (Reise in die Karpatenurwälder Rumäniens, 2017.
Heinz Kasper
doaj   +1 more source

Wildfire Emissions From European Boreal Fuels: Effects of Fuel Type and Moisture Content

open access: yesFire and Materials, EarlyView.
ABSTRACT The increasing severity of wildfires poses significant challenges through the release of greenhouse gases and other harmful gases and particles. Although field measurements exist, there is a lack of systematic data collection to understand the influence of moisture content on the particle and gas emissions of boreal fuels, particularly for ...
Robert Svensson   +7 more
wiley   +1 more source

Collection fund of the dwarf cultivars of the genus Picea Dietr. in Dendrological Park Alexandria of the NAS of Ukraine

open access: yesІнтродукція Рослин, 2011
Results of introduction of dwarf cultivars of genus Picea Dietr. in botanical establishments of Ukraine are given. The greatest collection by quantity dwarf cultivars are collected in Dendrological Park Alexandria – 18 cultivars, which belong to 4 ...
V.L. Rubis
doaj   +1 more source

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