Results 41 to 50 of about 24,928 (265)

Detection of Emerald Ash Borer Infestations in Living Green Ash by Noninvasive Electronic-Nose Analysis of Wood Volatiles

Biosensors, 2019
The emerald ash borer (EAB) has been the most destructive and costly nonnative insect to threaten the health of ash (Fraxinus) species in North America for at least the past 25 years. The development of methods for detecting visually-hidden EAB galleries
A. Dan Wilson, Lisa B. Forse, Benjamin A. Babst, Mohammad M. Bataineh   +3 more
doaj   +1 more source

Determination of differences in morphology between sapwood and heartwood cells of Pinus pinea and Robinia pseudoacacia

Turkish Journal of Forestry, 2015
In this study, the differences between sapwood and heartwood in fiber morphology on the samples prepared from Pinus pinea and Robinia pseudoacacia were investigated. For this aim, cell length, cell width, lumen width, wall thicknesses were measured.
Ferhat ÖZDEMİR, Ahmet TUTUŞ, İbrahim BEKTAŞ, Mustafa ÇİÇEKLER   +3 more
doaj   +1 more source

A Comparison of Unbleached Pulps from Cherry Heartwood and Sapwood [PDF]

, 1978
The purpose of the project was to evaluate pulps made from cherry heartwood and sapwood. The amount of heartwood a tree has is an individual trait of the tree rather than a function of geography or environment.
Bethke, Craig
core   +1 more source

Living on borrowed time – Amazonian trees use decade‐old storage carbon to survive for months after complete stem girdling [PDF]

, 2018
Nonstructural carbon (NSC) reserves act as buffers to sustain tree activity during periods when carbon (C) assimilation does not meet C demand, but little is known about their age and accessibility; we designed a controlled girdling experiment in the ...
Brugnoli, Carbone, Dietze, Eglin, Gaudinski, Hoch, Hua, Kunert, Levin, Martínez-Vilalta, Maunoury, Maunoury-Danger, McDowell, Morris, Muhr, Muhr, Phillips, Plavcová, R Development Core Team, Richardson, Richardson, RStudioTeam, Sande, Schuur, Sorz, Spicer, Spicer, Stuiver, Teskey, Trumbore, Trumbore, Trumbore, Vargas, Wendeberg, Werner, Würth, Xu, Yang   +37 more
core   +2 more sources

Community dynamics of lignicolous lichens on standing deadwood in a 275‐year chronosequence

Oikos, EarlyView.
Dead trees provide discrete habitat patches in which patch quality changes gradually due to wood decomposition. Although in most cases these patches persist for not more than a few decades, in some ecosystems deadwood decomposition and the consequent change in habitat patch quality can be a centuries‐long process, potentially leading to dynamics of ...
Aleksi Nirhamo, Pemelyn Santos, Mariina Günther, Jari Kouki, Tuomas Aakala   +4 more
wiley   +1 more source

Comparative Research on the Structure, Chemistry, and Physical Properties of Turkey Oak and Sessile Oak Wood

BioResources, 2023
The objective of this research was to establish comparatively some relevant features of Turkey oak and sessile oak wood, in order to better understand the drying behavior of these species.
Iulia Deaconu, Mihaela Porojan, Maria Cristina Timar, Bogdan Bedelean, Mihaela Campean   +4 more
doaj   +2 more sources

Small understory trees increase growth following sustained drought in the Amazon. [PDF]

New Phytol
Summary Droughts pose a major threat to the Amazon rainforest, yet the mechanisms enabling trees to maintain growth under prolonged drought remain poorly understood, particularly in the understory layer. We leveraged a 22‐yr Throughfall Exclusion (TFE) in a 1‐ha plot in eastern Amazonia, paired with a Control plot, to test whether small understory ...
Silva MC, Bartholomew DC, Giles AL, Bittencourt PRL, Sanchez-Martinez P, Martius LR, Rodrigues VN, Selman R, Reis JP, Teodoro GS, Oliveira RS, Binks O, Mencuccini M, Silva Junior JA, da Costa ACL, Meir P, Rowland L.   +16 more
europepmc   +2 more sources

Determination of the number of sapwood annual rings in oak in the region of southern Moravia

Journal of Forest Science, 2006
The paper deals with the determination of the number of sapwood annual rings in oak (Quercus sp.) in relation to altitude, locality and stand age. Several different groups of samples were used from two localities of southern Moravia.
M. Rybníček, H. Vavrčík, R. Hubený
doaj   +1 more source

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo, Constantin Zohner, Thomas W. Crowther, Jianlan Feng, Günter Hoch, Peng Li, Andrew D. Richardson, Yann Vitasse, Arthur Gessler   +8 more
wiley   +1 more source

Chemical changes of polysaccharides in heat-treated European beech wood

Journal of Wood Science
This work deals with the influence of different heat treatment temperatures (140, 150, 160, 170, 180, 190, 200, and 210 °C) on changes in sapwood and red heartwood of European beech (Fagus sylvatica L.). According to the results of wet chemistry methods,
Miroslav Gašparík, Aleš Zeidler, Eva Výbohová, Danica Kačíková, František Kačík   +4 more
doaj   +1 more source