Results 1 to 10 of about 50,751 (297)

Statistical age determination of tree rings. [PDF]

open access: yesPLoS ONE, 2020
Dendrochronology, the study of annual rings formed by trees and woody plants, has important applications in research of climate and environmental phenomena of the past.
Martin Ricker   +3 more
doaj   +2 more sources

Nonannual tree rings in a climate-sensitive Prioria copaifera chronology in the Atrato River, Colombia [PDF]

open access: yesEcol Evol, 2017
In temperate climates, tree growth dormancy usually ensures the annual nature of tree rings, but in tropical environments, determination of annual periodicity can be more complex.
Andreu-Hayles, Laia   +4 more
core   +2 more sources

Solar superstorm of AD 774 recorded subannually by Arctic tree rings [PDF]

open access: yesNature Communications, 2018
Tree rings retain information of sudden variations of ancient radiocarbon (14C) content, however the origin and exact timing of these events often remain uncertain.
J. Uusitalo   +10 more
doaj   +2 more sources

A rapid cosmic-ray increase in BC 3372-3371 from ancient buried tree rings in China [PDF]

open access: yesNat Commun, 2017
Cosmic rays interact with the Earth's atmosphere to produce $^{14}$C, which can be absorbed by trees. Therefore, rapid increases of $^{14}$C in tree rings can be used to probe previous cosmic-ray events.
Cheng, K. S.   +4 more
core   +4 more sources

Energetic impact of reconstructed debris flow on the intensity and duration of growth disturbances in tree rings

open access: yesFrontiers in Earth Science, 2023
A rare study on the quantitative relationship between the energetic impact of debris flows on the intensity and duration of growth disturbances of tree rings was carried out, partly due to a lack of feasible approaches and detailed field evidence.
Xueliang Wang   +15 more
doaj   +1 more source

Olive tree-ring problematic dating: a comparative analysis on Santorini (Greece). [PDF]

open access: yesPLoS ONE, 2013
Olive trees are a classic component of Mediterranean environments and some of them are known historically to be very old. In order to evaluate the possibility to use olive tree-rings for dendrochronology, we examined by various methods the reliability of
Paolo Cherubini   +8 more
doaj   +1 more source

Synchrotron-based X-ray microscopy for assessing elements distribution and speciation in mangrove tree-rings

open access: yesResults in Chemistry, 2021
Micro-X-ray fluorescence (μ-XRF) spectroscopy has been used for dendrochemistry as a high spatial resolution, multi-elemental and non-destructive technique.
Elton Eduardo Novais Alves   +8 more
doaj   +1 more source

Pointer years in the growth of beech trees of the NP "Đerdap" area [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2014
This paper defines pointer years and years with distinctive tree rings in the growth of beech in 3 sites (ecological units-EU) of the area of Đerdap, in order to observe the reactions of trees to the effects of various factors of growth.
Stajić Branko
doaj   +1 more source

Reconstructing groundwater and lake level histories in Northern Wisconsin: isolation of groundwater’s influence on tree rings from climatic and environmental drivers

open access: yesEnvironmental Research Letters, 2023
Tree rings can reveal long-term environmental dynamics and drivers of tree growth. However, individual ecological drivers of tree growth need to be disentangled from the effects of other co-occurring environmental and climatic conditions in tree rings to
Dominick M Ciruzzi, Steven P Loheide II
doaj   +1 more source

Radiocarbon and wood anatomy as complementary tools for generating tree-ring records in Bolivia

open access: yesFrontiers in Plant Science, 2023
The science of tropical dendrochronology is now emerging in regions where tree-ring dating had previously not been considered possible. Here, we combine wood anatomical microsectioning techniques and radiocarbon analysis to produce the first tree-ring ...
Arturo Pacheco-Solana   +13 more
doaj   +1 more source

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