Results 241 to 250 of about 71,789 (279)

Fennoscandian tree-ring anatomy shows a warmer modern than medieval climate

open access: yesNature, 2023
Earth system models and various climate proxy sources indicate global warming is unprecedented during at least the Common Era1. However, tree-ring proxies often estimate temperatures during the Medieval Climate Anomaly (950-1250 CE) that are similar to, or exceed, those recorded for the past century2,3, in contrast to simulation experiments at regional
Jesper Björklund   +2 more
exaly   +5 more sources

Landslide-induced changes in tree-ring anatomy: A new dendrogeomorphic avenue?

Catena, 2022
The dendrogeomorphic dating of past landslides can be limited by the speed or magnitude of movements, as they are sometimes too small to induce growth responses in trees standing on unstable slopes. As a result, movements of low magnitude are generally assumed to remain undetectable in standard macroscopic analysis of growth disturbances in tree-ring ...
Karel Šilhán, Markus Stoffel
exaly   +2 more sources

Exploring wood anatomy, density and chemistry profiles to understand the tree-ring formation in Amazonian tree species

Dendrochronologia, 2022
Fil: Santini, Luiz.
Daigard Ricardo Ortega Rodriguez   +2 more
exaly   +3 more sources

Contribution of Xylem Anatomy to Tree-Ring Width of Two Larch Species in Permafrost and Non-Permafrost Zones of Siberia [PDF]

open access: yesForests, 2020
Plants exhibit morphological and anatomical adaptations to cope the environmental constraints of their habitat. How can mechanisms for adapting to contrasting environmental conditions change the patterns of tree rings formation? In this study, we explored differences in climatic conditions of permafrost and non-permafrost zones and assessed their ...
Margarita I Popkova   +2 more
exaly   +3 more sources

The Tunguska Event in 1908: Evidence from Tree-Ring Anatomy

Astrobiology, 2004
We analyzed tree rings in wood samples collected from some of the few surviving trees found close to the epicenter (within 4-5 km) of the Tunguska event that occurred on the last day of June 1908. Tree-ring growth shows a depression starting in the year after the event and continuing during a 4-5-year period.
Evgenii A, Vaganov   +3 more
openaire   +2 more sources

Tree ring anatomy indices of Pinus tabuliformis revealed the shifted dominant climate factor influencing potential hydraulic function in western Qinling Mountains

Dendrochronologia, 2021
Abstract Trees can adjust xylem anatomical structure related with potential hydraulic functions to cope with climate variability. We therefore need a better understanding of how climate variability constrains wood anatomy and tree radial growth. Pinus tabuliformis dominates natural forests and plantations over the western Qinling Mountains, which is ...
Xiaohong Liu   +2 more
exaly   +2 more sources

Comparative tree-ring anatomy of Fraxinus excelsior with Chalara dieback

Journal of Forestry Research, 2018
We tested the hypothesis that the biometrical characters of wood elements in ash trees (Fraxinus excelsior L.) become modified in response to the progression of disease caused by Chalara fraxinea. Anatomical analyses were performed on wood samples collected at breast height from the trunks of groups of ash trees which contained healthy, weakened and ...
Tulik, Mirela   +3 more
openaire   +2 more sources

Exclusive application of tree-ring anatomy for reconstruction of past landslide behavior

open access: yesLandslides
Abstract Tree-ring-based analyses currently represent a modern, continuously evolving, and effective tool for the spatio-temporal reconstruction of past landslide movements. Although the use of standard macroscopic landslide signals is still more common, this classical approach has significant limitations. Recent research, however, shows that
Karel Šilhán
exaly   +2 more sources

Wood Anatomy and Tree-Ring Structure and Their Importance for Tropical Dendrochronology

2010
In Amazonian floodplain forests, the flood pulse results in an ­alternating aquatic and terrestrial phase per year. Consequentially, trees react with cambial ­dormancy, resulting in differing wood anatomical structures that appear as rings in the cross-section of the trees stem.
Worbes, M., Fichtler, E.
openaire   +3 more sources

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