Results 81 to 90 of about 5,539,134 (182)

Effect Of Planting Spacing In Production And Permeability Of Heartwood And Sapwood Of Eucalyptus Wood

Floresta e Ambiente, 2019
The objective of this work was to evaluate the influence of different useful areas provided by the planting spacings (3 × 1, 3 × 2, 3 × 3, 3 × 4 m) on the production and permeability of heartwood and sapwood of Eucalyptus grandis and Eucalyptus grandis ×
Alice Soares Brito, Graziela Baptista Vidaurre, José Tarcísio da Silva Oliveira, João Gabriel Missia da Silva, Brunela Pollastrelli Rodrigues, Angélica de Cássia Oliveira Carneiro   +5 more
doaj   +1 more source

The Transboundary Reach of the Columbia River: Cottonwood Colonization Followed Flow Moderation From the Columbia River Treaty Dams

River Research and Applications, Volume 42, Issue 4, Page 837-850, May 2026.
ABSTRACT The Columbia river provides the largest Pacific outflow in the Western Hemisphere and the greatest hydropower production of any North American river system. For hydropower generation and flood risk management, four massive water storage reservoirs followed the Columbia River Treaty between Canada and the United States, with three Canadian dams,
Colleen A. Phelan, Greg Utzig, Stewart B. Rood   +2 more
wiley   +1 more source

Role of Extractable and Non-Extractable Polyphenols in the Formation of Beech (Fagus sylvatica L.) Red Heartwood Chromophores

Forests
Despite the long history of beech (Fagus sylvatica L.) red heartwood research, there has been no experimental proof on the structure of the chromophores yet.
Tamás Hofmann, Eszter Visi-Rajczi, Levente Albert   +2 more
semanticscholar   +1 more source

Exorcizing Divergence in Tree‐Ring Density Along the Rocky Mountains

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Briffa et al. (1998), https://doi.org/10.1038/35596 published a seminal paper on the reduced sensitivity of annual tree growth to temperature across Northern Hemisphere treeline stands. By averaging tree‐ring chronologies to sub‐continental means, they found decade‐long trends in maximum latewood density (MXD) progressively diverging from ...
Marcel Kunz, Max C. A. Torbenson, Frederick Reinig, Edurne Martinez del Castillo, Ulf Büntgen, Rob Wilson, Inga K. Homfeld, Greg King, Emily Reid, Kevin J. Anchukaitis, Valerie Trouet, Karen E. King, Grant L. Harley, Justin T. Maxwell, Adam Csank, Ellie Broadman, Eileen Kuhl, Julie Edwards, Philipp Römer, Björn Günther, Christian Gerber, Jan Esper   +21 more
wiley   +1 more source

The influence of heartwood, sapwood and density on moisture fluctuations and crack formations of coated Norway spruce in outdoor exposure

Journal of Wood Science, 2019
The moisture sorption behaviour of wood strongly influences the durability of exterior-coated wood. Wood characteristics are known to influence the water sorption of uncoated wood.
T. Sjökvist, Å. Blom, M. E. P. Wålinder   +2 more
doaj   +1 more source

The Pathogenic White-Rot Fungus Heterobasidion parviporum Responds to Spruce Xylem Defense by Enhanced Production of Oxalic Acid

Molecular Plant-Microbe Interactions, 2012
Pathogen challenge of tree sapwood induces the formation of reaction zones with antimicrobial properties such as elevated pH and cation content. Many fungi lower substrate pH by secreting oxalic acid, its conjugate base oxalate being a reductant as well ...
Nina Elisabeth Nagy, Harald Kvaalen, Monica Fongen, Carl Gunnar Fossdal, Nicholas Clarke, Halvor Solheim, Ari M. Hietala   +6 more
doaj   +1 more source

Heritability of Heartwood Formation in Pinus radiata D. Don [PDF]

Nature, 1965
AN important change which occurs in the wood of most trees as they grow older is the transformation of sapwood into heartwood. This change is associated with the death of the ray and vertical parenchyma cells, and definite modifications to the anatomy of both softwoods and hardwoods1.
openaire   +1 more source

Evaluation of red sanders (Pterocarpus santalinus L.f.) germplasm for conservation and breeding

Genetic Resources
Pterocarpus santalinus L.f., an endangered species endemic to India’s Eastern Ghats, faces threats from illegal trade due to high demand and limited legal supply.
Kumbarahally Murthigowda Shivaprasad, Pendela Surath Kumar, Avula Kishore, Dinesh Kumar, Swapnen Pattanaik   +4 more
doaj   +1 more source

Can bark stripping cause red heartwood formation in beech stems?

iForest - Biogeosciences and Forestry, 2018
Injuries to standing trees caused by logging and the subsequent changes in biochemical composition and anatomy of affected tissues lead to wood quality loss, thus lowering the commercial value of roundwood. In this study, we investigated the influence of
Račko V, Mišíková O, Hlaváč P, Deáková V   +3 more
doaj   +1 more source

Chemical and structural changes during heartwood formation in Pinus sylvestris [PDF]

Forestry, 2003
Summary The aim of the present study was to describe the spatial distribution of some chemical and structural changes in the transition zone between sapwood and heartwood of Scots pine (Pinus sylvestris L.) in order to get a better understanding of heartwood formation.
openaire   +1 more source