Results 31 to 40 of about 2,162 (162)

Spatiotemporal Variation and Covariation of Heartwood Color in Planted Teak Wood from Ghana

BioResources, 2022
Heartwood color is a complex trait that affects the economic and aesthetic value of the wood but is highly variable. How the color of the heartwood varies spatially and temporally is poorly understood.
Jerry Oppong Adutwum, Junji Matsumura
doaj   +2 more sources

Water, starch, and nuclear behavior in ray parenchyma during heartwood formation of Catalpa bungei ‘Jinsi’

Heliyon
Catalpa bungei ‘Jinsi’, a cultivar of C. bungei C. A. Mey., is valued for its heartwood with good overall mechanical properties, naturally durable and golden-yellow color. Little is known about heartwood formation in C. bungei ‘Jinsi’ trees. The behavior
Pingping Guo, Xiping Zhao, Zifei Yang, Yingxin Wang, Hongying Li, Lepei Zhang   +5 more
doaj   +1 more source

Radial Distribution of Lipophilic Extractives in Walikukun (Schoutenia ovata Korth.) Wood

South-East European Forestry
Walikukun (Schoutenia ovata Korth.) is a commercially significant wood species in Indonesia. Heartwood, in particular, is important due to the natural durability and aesthetics, while lipophilic extractives play a crucial role in the formation. Therefore,
Rizki Arisandi, Arom Figyantika, Bagus Praditya Harliando, Fadil Yudasmara Putra, Vincentius Andri Kiranu Pasquale, Ganis Lukmandaru   +5 more
doaj   +1 more source

The changes of extractive contents of young Swietenia mahagoni (L.) Jacq trees during heartwood formation

Metsanduslikud Uurimused, 2022
We investigated the distribution of extractive, phenolic, and polysaccharides content of young S. mahagoni trees aged 1 to 5 years. The wood powder materials in two vertical positions (bottom and top) were successively extracted using n-hexane, methanol,
Arisandi Rizki, Marsoem Sri Nugroho, Lukmandaru Ganis, Sutapa Johanes Pramana Gentur   +3 more
doaj   +1 more source

Alleviation of phosphorus rather than nitrogen limitation driven by permafrost and landscape effects on Dahurian larch forests

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu, Liang Shi, Zhaopeng Song, Boyi Liang, Honglin He, Kun Yang, Weihua Zhang, Lisha Lyu, Anatoly S. Prokushkin, Hongyan Liu   +9 more
wiley   +1 more source

Ring‐Width Dendrochronology, Isotopic Dendrochronology and Radiocarbon Dating of Timbers From the Spire Scaffold of Salisbury Cathedral, Wiltshire, England

Archaeometry, EarlyView.
ABSTRACT Ten timbers from the spire scaffold of Salisbury Cathedral were dated using a combination of ring‐width dendrochronology, stable oxygen isotopic dendrochronology and radiocarbon dating. Seven timbers were coeval and assigned a combined empirical felling date range of 1352–1378, which was further refined to 1351–1359 (OxCal 95.4%).
Kutsi D. Akcicek, Daniel Miles, Christopher Bronk Ramsey, Darren Davies, Danny McCarroll, Neil J. Loader   +5 more
wiley   +1 more source

Roles of JnRAP2.6-like from the transition zone of black walnut in hormone signaling. [PDF]

PLoS ONE, 2013
An EST sequence, designated JnRAP2-like, was isolated from tissue at the heartwood/sapwood transition zone (TZ) in black walnut (Juglans nigra L). The deduced amino acid sequence of JnRAP2-like protein consists of a single AP2-containing domain with ...
Zhonglian Huang, Peng Zhao, Jose Medina, Richard Meilan, Keith Woeste   +4 more
doaj   +1 more source

Anatomical and Histological Structures of the Male Reproductive System of Chalcophora mariana (Linnaeus, 1758) (Coleoptera: Buprestidae): Light and Scanning Electron Microscopy Study

Acta Zoologica, EarlyView.
ABSTRACT This study presents the first detailed morphological analysis of the male reproductive system of Chalcophora mariana (Linnaeus, 1758) using stereo microscopy, light microscopy, and scanning electron microscopy. The male reproductive system of C.
Hicret Arslan, Selami Candan
wiley   +1 more source

Pine heartwood formation as a maturation phenomenon

Journal of Wood Science, 2002
The inverse of the relative increment rate of size is proposed as a measure of the maturity of a forest tree. The heartwood content within bole cross sections is modeled semiempirically using asymptotic fitting. It is shown that the present proposal for a definition of maturity statistically explains heartwood content far better than age or size.
Kärenlampi, P.P., Riekkinen, M.
openaire   +1 more source

Tree stem methane emissions are regulated by site‐level biogeochemistry over species identity in Amazon floodplain forests

New Phytologist, Volume 251, Issue 1, Page 179-190, July 2026.
Summary Tree stems in Amazonian floodplains emit substantial methane (CH4), yet controls on emission variability remain unclear. Emissions span orders of magnitude between várzea (nutrient‐rich) and igapó (nutrient‐poor) forests and among trees, suggesting controls beyond flooding.
Holly R. Blincow, Niall P. McNamara, Dafydd M. O. Elias, Carla Gomez, Jack Lamb, Rodrigo Nunes de Sousa, Darlene Gris, Leonardo Pequeno Reis, Alison M. Hoyt, Sunitha Rao Pangala   +9 more
wiley   +1 more source