Results 51 to 60 of about 9,924 (218)

Comparative analysis of the anatomical structure of heartwood and sapwood selected Gymnocladus canadensis Lam. trees in Srpska Crnja [PDF]

Archives of Biological Sciences, 2011
This paper shows the results obtained from the study of the macroscopic-microscopic structure (capillary system) in the growth stem of Gymnocladus canadensis Lam.
Vilotić Dragica, Šijačić-Nikolić Mirjana, Miljković Danijela, Ocokoljić Mirjana, Rebić M.   +4 more
doaj   +1 more source

Effects of long‐term nitrogen addition on two dominant species in a drought‐prone Mediterranean forest

Ecosphere, Volume 17, Issue 6, June 2026.
Abstract This study aimed to assess the long‐term effects of nitrogen (N) addition on recruitment, growth, survival, and physiological responses in Quercus ilex and Phillyrea latifolia, two codominant species typical in the Mediterranean forests. Here, we present a 9‐year N addition experiment (20 kg N ha−1 year−1, δ15N‐enriched) in an N‐limited ...
Cinta Sabaté‐Gil, Romà Ogaya, Laura Márquez, Àngela Ribas, Josep Peñuelas   +4 more
wiley   +1 more source

Positional differences in the micro- and ultra-structural variations of ray parenchyma cells during the transformation from sapwood to heartwood

Frontiers in Plant Science
Ray parenchyma cells are involved in the initiation of heartwood formation. The position within a ray influences the timing of ray parenchyma cell differentiation and function; however, there is little information concerning the positional influence on ...
Lijuan Yin, Lijuan Yin, Lingyu Ma, Xiaomei Jiang, Yonggang Zhang, Yupei Wei, Yuan Cao, Lihong Yao, Juan Guo   +8 more
doaj   +1 more source

Fine‐Scale Spatial Variation of Evapotranspiration Across Tropical Land‐Cover Mosaics Revealed by UAV Thermography

Hydrological Processes, Volume 40, Issue 6, June 2026.
We study evapotranspiration (ET), a key flux in the hydrological cycle, across heterogeneous tropical land‐cover mosaics in lowland Sumatra featuring secondary forest patches, oil palm plantations, and shrubland. We apply high‐resolution UAV thermography and an energy‐balance model to derive ET across three mosaic landscapes (Areas 1–3).
Medha Bulusu, Florian J. Ellsäßer, Hendrayanto, Dirk Hölscher, Alexander Röll   +4 more
wiley   +1 more source

WAVEFORM FEATURES OF ACOUSTIC EMISSION PROVIDE INFORMATION ABOUT REVERSIBLE AND IRREVERSIBLE PROCESSES DURING SPRUCE SAPWOOD DRYING

BioResources, 2012
Acoustic emission (AE) and radial dimensional changes during dehydration under ambient conditions were compared between fully saturated fresh Norway spruce (Picea abies (L.) Karst.) sapwood and sapwood exposed to one or two rewetting-dehydration cycles ...
Sabine Rosner
doaj  

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

Oikos, Volume 2026, Issue 6, June 2026.
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

Simulated Impacts of the 2023 Megadrought on Black Spruce Potential Productivity Across Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Black spruce (Picea mariana) is a dominant tree species across the Canadian boreal forest and a key contributor to national carbon dynamics. However, its growth and stand productivity are increasingly threatened by intensifying droughts, rising temperatures, and associated disturbances such as wildfire. In this study, we used the process‐based
Maxence Soubeyrand, Martin P. Girardin, Yan Boulanger   +2 more
wiley   +1 more source

Shaping future forests: how can ecophysiology support climate‐smart forest management?

New Phytologist, Volume 250, Issue 5, Page 2778-2813, June 2026.
Summary Climate change, particularly the associated increase in extreme events and disturbances, threatens the numerous environmental, social, and economic benefits that forests provide, both locally and globally. Heat and drought pose significant risks to forest ecosystems; the anticipated future climate is expected to exacerbate this trend ...
Arthur Gessler, José M. Grünzweig, Laura Bigio, Henrik Hartmann, Nate McDowell, Frank Krumm, Arun K. Bose, Andreas Rigling, Harald Bugmann, Valentina Vitali, Pascal Schneider, J. Jelle Lever, Janine Schweier, Anne Kempel, Niklaus E. Zimmermann, Philipp Brun, Jürgen Bauhus, Micah Wilhelm, Alessandra Bottero   +18 more
wiley   +1 more source

Some aspects of western hemlock air permeability

Maderas: Ciencia y Tecnología, 2014
Knowledge of the variability of fluid permeability of wood in general and of western hemlock in particular is of significant importance to the primary and secondary wood products processing industry of coastal British Columbia.
Prasad Rayirath, Stavros Avramidis
doaj  

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