Results 111 to 120 of about 24,928 (265)

Asymptotic and numerical analysis of a porous medium model for transpiration-driven sap flow in trees

, 2017
We develop a 3D porous medium model for sap flow within a tree stem, which consists of a nonlinear parabolic partial differential equation with a suitable transpiration source term. Using an asymptotic analysis, we derive approximate series solutions for
Janbek, Bebart Maisar, Stockie, John M.
core  

Leaf Shedding During Drought Reduces Hydraulic Stress in Trees

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract Leaf area has long been a proxy for ecosystem function. However, it can be highly variable even in the same forest types across space and time due to variations in local ecohydrology and climatic extremes such as droughts and heatwaves. Leaf shedding in response to drought has been documented at site‐scales, theoretically to avoid hydraulic ...
G. R. Quetin, L. D. L. Anderegg, A. T. Trugman   +2 more
wiley   +1 more source

Investigation of Thermal and Sound Insulation Properties of Sapwood and Heartwood of Willow Tree

BioResources
The heat and sound insulation properties of the heartwood and sapwood of willow (Salix alba L.) were investigated.  Based on the experimental results, it was determined that the density value of the heartwood of the willow tree was higher than that of ...
Musa Kaya, Ramazan Bülbül, Mutlu Türk
doaj  

Phylogenetic relationships in two African Cedreloideae genera (Meliaceae) reveal multiple rain/dry forest transitions [PDF]

, 2018
Establishing phylogenetic relationships allows investigating how species diversity has evolved in various ecosystems. The genera Entandrophragma and Khaya contain tree species distributed in different African biomes (lowland rain forest, lowland dry ...
Bouka, Ulrich Gaël, Demenou, Boris B., Doumenge, Charles, Duminil, Jérôme, Ekué, Marius Rodrigue Mensah, Hardy, Olivier J., Mc Key, Doyle, Migliore, Jérémy, Monthe, Franck   +8 more
core  

Sugar Maple Borer (Coleoptera: Cerambycidae) Activity Associated With Periods of Severe Defoliation [PDF]

, 2018
A perusal of previous research on sugar maple borer, Glycobius speciosus, in northern New York State strongly associates severe early and late season defoliation with increased borer damage. This re-examination of earlier work suggests foliage protection
Allen, Douglas C, Wink, Robert A
core   +2 more sources

FISH Illumination of the Oak Wilt Pathogen, Bretziella fagacearum, on Vectoring Insects and in the Red Oak Host Tissues

Forest Pathology, Volume 56, Issue 2, April 2026.
ABSTRACT Oak wilt, caused by Bretziella fagacearum, is a destructive vascular disease of oaks in North America, yet fine‐scale spatial localisation of the pathogen in host tissues and on insect vectors remains poorly characterised. In this study, we developed and validated a species‐specific fluorescence in situ hybridisation (FISH) probe targeting the
Martine Blais, Karandeep Singh Chahal, Monique L. Sakalidis, Philippe Tanguay   +3 more
wiley   +1 more source

Anatomske, kemijske in sorpcijske lastnosti beljave in jedrovine rdečega bora

Acta Silvae et Ligni, 2019
In the case of Scots pine (Pinus sylvestris L.), anatomical differences between the sapwood and heartwood were researched, the content of extractives in the sapwood and heartwood defined, hygroscopicity of sapwood and heartwood studied, so as the ...
Maks Merela, Vanja Turičnik, Viljem Vek, Primož Oven   +3 more
doaj   +1 more source

A process-based model of conifer forest structure and function with special emphasis on leaf lifespan [PDF]

, 2002
We describe the University of Sheffield Conifer Model (USCM), a process-based approach for simulating conifer forest carbon, nitrogen, and water fluxes by up-scaling widely applicable relationships between leaf lifespan and function. The USCM is designed
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core   +1 more source

Differences in mycelial turnover and persistence of wood‐decay fungi at the microscale

New Phytologist, Volume 250, Issue 1, Page 577-590, April 2026.
Summary How long do fungal hyphae persist in the environment? And how does this differ between groups and species of fungi? Despite growing knowledge of fungal contributions to decomposition and soil carbon cycles, surprisingly little is known about the turnover of mycelia: What happens to fungal hyphae over time? And how this impacts different fungi's
Roos‐Marie I. J. van Bokhoven, Kristin Aleklett, Dimitrios Floudas   +2 more
wiley   +1 more source

Effects of moisture content on the behaviour of Scots pine heartwood and sapwood under impact

Journal of Wood Science
The material properties of sapwood and heartwood vary within various wood species and even they can show significant differences within a single tree. Scots pine (Pinus sylvestris L.), a species that plays a crucial role in timber production for joinery ...
Mojtaba Hassan Vand, Jan Tippner
doaj   +1 more source