Results 61 to 70 of about 24,131 (226)

Growth trends reveal the forest structure during Roman and Medieval times in Western Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea) [PDF]

, 2005
At some point in time, man has influenced nearly all forests in Western Europe. Most of the original forest cover has been converted to arable land and pastures, or has been cut for the supply of firewood and construction timber.
Beeckman, Hans, Haneca, Kristof, Van Acker, Joris   +2 more
core   +3 more sources

Sapwood hydraulic recovery following thinning in lodgepole pine [PDF]

Annals of Forest Science, 2006
Sapflow in lodgepole pine (Pinus contorta) was measured over the summer of 2002 to assess the impact of reduced sapwood permeability (k) after thinning on tree water use. Lodgepole pine in recently thinned (RT), thinned five years prior (5T), and un-thinned (C) stands were instrumented with thermal dissipation sap flow sensors.
Edward Boyd Reid, Douglas, Silins, Uldis, James Lieffers, Victor   +2 more
openaire   +2 more sources

Tree‐ring structure determines the temporal coordination between xylem growth and the gain in hydraulic conductivity in the outermost ring

New Phytologist, EarlyView.
Summary The study of seasonal xylem hydraulics has predominantly focused on embolism‐induced losses, whereas growth‐driven increases in hydraulic capacity have received little attention. We assessed the intra‐annual dynamics of xylem formation and gain of conductivity in the current‐year ring of three species with contrasting tree‐ring structure ...
Laura Fernández‐de‐Uña, Cyrille B. K. Rathgeber, Gonzalo Pérez‐de‐Lis, Anjy N. Andrianantenaina, Matthias Cuntz   +4 more
wiley   +1 more source

The quality comparison of particleboards produced from heartwood and sapwood of european larch

Maderas: Ciencia y Tecnología, 2019
In this paper, the impacts of heartwood and sapwood usage on the physical, mechanical, and surface properties and formaldehyde emission of particleboard are investigated. European Larch (Larix decidua) trees are chosen as a raw material.
Selahattin Bardak, Gökay Nemli, Timuçin Bardak   +2 more
doaj  

Endophytic and ectomycorrhizal, an overlooked dual ecological niche? Insights from natural environments and Russula species

New Phytologist, EarlyView.
Summary Ectomycorrhizal fungi (EcMF) are key components of temperate ecosystems, and recent studies suggest that they can also inhabit non‐EcM plant roots as endophytes. We aimed to (1) provide new evidence of EcMF colonization of non‐EcM hosts, (2) offer direct microscopic confirmation of such endophytism and (3) assess factors influencing ...
Liam Laurent‐Webb, Philippe Rech, Amélia Bourceret, Chloé Chaumenton, Aurélie Deveau, Laurent Genola, Mélanie Januario, Rémi Petrolli, Marc‐André Selosse   +8 more
wiley   +1 more source

Observations of Xyleborus affinis Eichhoff (Coleoptera:Curculionidae:Scolytinae) in Central Michigan [PDF]

, 2017
Xyleborus affinis Eichhoff colonized wind thrown timber in the moist floodplain habitats of Central Michigan. Single adult females constructed a complex gallery system consisting of phloem–sapwood interface tunnels and sapwood tunnels.
Bowker, Richard G, Bunce, Mark A, Harlan, John E, Roeper, Richard A.   +3 more
core   +2 more sources

Employing a Hysteresis Approach to Analyze Shifts in Tree Physiological Thresholds in Response to Drought

Plant, Cell &Environment, EarlyView.
ABSTRACT Drought‐induced tree mortality underscores the need for improved physiological models to predict tree responses to water stress. We employed a hysteresis modelling approach analyzing diel water absorption and desorption cycles to understand drought‐induced shifts in physiological thresholds.
Mauro Brum, Annie Deslauriers, Matthew Vadeboncoeur, Tanner Frost, David Moore, Caroline Rodrigues da Silva, Daniel B. Metcalfe, Heidi Asbjornsen   +7 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  

Investigating the Relationship Between Sapwood Density and Sapwood Capacitance Within the Hydraulic Pipeline Paradigm

, 2020
As the earth's climate continues to change, forests within a diverse set of biomesare experiencing increasingly frequent, severe, and longer periods of drought stress.The continued rise of global temperatures could radically alter the composition and structure of forests in many regions (Van Mantgem, 2007).
openaire   +1 more source

Similar Relative Carbon Costs for Construction and Storage of Sun and Shade Branches in Mature Temperate Trees

Plant, Cell &Environment, Volume 49, Issue 6, Page 3351-3362, June 2026.
ABSTRACT Irradiance strongly affects the morphology, carbon (C) uptake and construction costs of leaves and branches. Within tree crowns, light decreases from the top downwards, but whether this translates to differences in the C balance of sun and shade branches remains unclear. Here, we combined a light‐driven photosynthesis model, parameterised with
Cedric Zahnd, Miro Zehnder, Ansgar Kahmen, Günter Hoch   +3 more
wiley   +1 more source