Results 211 to 220 of about 8,100 (235)

Quantitative anatomy or macroscopic parameters of compression wood of Picea abies (L.) H. Karst.? Defining the optimal parameters for dendrogeomorphic purposes

IAWA Journal, 2022
Summary The quantification of the intensities of tree growth responses to the impact of geomorphic processes is a modern research trend in dendrogeomorphology. It enables a more sensitive assessment of the activity of the studied geomorphic process compared to the traditional use of growth disturbances.
Kristýna Wiśniewská, Karel Šilhán
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The potential for quantitative wood anatomy of dryland riparian trees to improve understanding of historic water availability in the USA Southwest

2022
Due to the effects of climate change, the USA Southwest is expected to experience increased temperatures and decreased water availability. Extended droughts will likely have important consequences for riparian trees whose growth and habitat are strongly limited by water availability. One consequence of extended water table declines on riparian trees is
Richard Thaxton, David Meko
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Wood anatomy of West European Betula: Quantitative descriptions and applications for routine identification in paleoecological studies

Écoscience, 2003
AbstractIn paleoecological and archaeological studies the species present in wood and charcoal samples are often identified to obtain information about past climatic conditions and vegetation. The main references for identification of Betula at the species level are qualitative descriptions of wood anatomy.
Erik Hellberg, Christopher Carcaillet
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Fraxinus pennsylvanica trees growing along the central Assiniboine river floodplain, Central Canada: Flood rings, quantitative wood anatomy and blue intensity.

2023
In recent decades, visual identification of flood rings (event years) has been successfully used to document historic high-magnitude spring floods. In Fraxinus spp., flood rings usually have more numerous earlywood vessels and/or earlywood vessels with smaller cross-sectional area than observed in "normal" years.
Jacques C. Tardif, France Conciatori, David L. Smith   +2 more
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Miter box holder for quantitative wood anatomy sample preparation

Wood anatomical analysis is a fundamental tool in dendrochronology, ecology, and plant physiology. An important preparatory step is the splitting of wood cores into smaller segments that fit glass slides and standard histology cassettes for microtomy and imaging.
Maria A. Tabakova, Kristina V. Akulinina, Alexey Sobolev, Alberto Arzac   +3 more
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Simulation study to determine necessary sample sizes for image analysis-based quantitative wood anatomy of vessels of beech (Fagus sylvatica)

Dendrochronologia, 2017
Abstract Quantitative analysis of wood anatomy is a powerful dendroecological tool to provide new insights into environmental signals encoded in tree-rings. Nevertheless, studies with long time series or large sample sizes are not very common for diffuse-porous tree species due to the laborious sample preparation and image analysis.
Diaconu, Daniela, Hackenberg, Jan, Stangler, Dominik Florian, Kahle, Hans-Peter, Spiecker, Heinrich   +4 more
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Quantitative analyses establish the central vascular cylinder as the standard for wood-anatomy studies in lianas having compound stems (Paullinieae: Sapindaceae)

Flora - Morphology, Distribution, Functional Ecology of Plants, 2011
The lianas of the Paullinieae tribe (Sapindaceae) have highly specialized stems which present four different structural variations of the vascular cylinder: divided, compound, corded and fissured. Because each vascular cylinder grows in an independent manner through its own circular cambium, we ask which type should be used for anatomic descriptions of
Neusa Tamaio, Monique F. Neves, Arno F.N. Brandes, Ricardo C. Vieira   +3 more
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Indication of radioactive contamination of forest ecosystems in the zone of the east Ural radioactive trace using methods of quantitative wood anatomy

Èkologiâ
The anatomical structure of the annual rings of Scots pine, formed before and after the Kyshtym accident, is analyzed. In trees growing closer to the central axis of the East Ural radioactive trace (EURT), a decrease in the number of cells in the annual ring, as well as a decrease in the diameter of the lumens and the thickness of the cell walls, was ...
V. V. Kukarskih, A. V. Komarova, A. D. Vakhrusheva, A. Arzac, M. V. Modorov   +4 more
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Growth, isotope records and quantitative wood anatomy reveal species-specific couplings in three Mexican conifers inhabiting drought-prone areas

2020
<p>An improvement of our understanding of how tree species will respond to warmer conditions and longer droughts requires comparing their responses across different environmental settings and considering a multi-proxy approach. We used different xylem traits (tree-ring width, formation of intra-annual density fluctuations & ...
Giovanna Battipaglia, Arturo Pacheco, Julio Camarero, Marin Pompa-Garcia, Jordi Voltas, Marco Carrer   +5 more
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Automated Quantitative Wood Anatomy Using Deep Learning: From Cell Segmentation to Climate Reconstruction

Quantitative wood anatomy (QWA) provides detailed insights into tree physiological responses to climate and is a powerful archive for environmental reconstruction. However, its broader application is constrained by labor-intensive data production and by methodological limits in both anatomical image analysis and climate signal extraction.
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