Results 1 to 10 of about 732,533 (207)

Does Cedrela always form annual rings? Testing ring periodicity across South America using radiocarbon dating [PDF]

open access: yesTrees, 2017
Tropical tree rings have the potential to yield valuable ecological and climate information, on the condition that rings are annual and accurately dated.
Baker, JCA   +3 more
core   +5 more sources

Factors affecting the radial growth of Juniperus foetidissima Willd. and J. excelsa M. Bieb. in central Anatolia

open access: yesJournal of Forest Science, 2021
Central Anatolia is one of the semi-arid regions of Turkey that does not offer very suitable conditions for the growth of trees. Tree growth is a process controlled by genetic, environmental and climatic factors. Trees record these signals, which provide
Gülzade Kahveci, Münevver Arslan
doaj   +1 more source

Thickness Analysis of Beech Stems Using Annual Rings [PDF]

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2021
This article deals with the evaluation of a thickness analysis on the vuts of beech wood using annual rings. The study was performed at the state enterprise Lesy SR, a branch plant in Smolenice on the territory of Forrest District Majdán. In order to perform a thickness analysis of the beech logs, it was necessary to know the number of annual rings on ...
Michal Daniš, Jindřich Neruda
openaire   +2 more sources

Transition in viscoelastic properties within successive annual rings of radiata pine (Pinus radiata)

open access: yesJournal of Wood Science, 2023
Dynamic mechanical analysis (DMA) measurements of water-saturated radiata pine wood in the temperature range from 0 ℃ to 100 ℃ were focused to clarify the transition in viscoelastic properties within successive annual rings.
Hiroaki Horiyama   +2 more
doaj   +1 more source

Intra-ring radial cracks in Sakhalin spruce (Picea glehnii) from artificial forest

open access: yesJournal of Wood Science, 2023
The occurrence of radial cracks in Sakhalin spruce (Picea glehnii), differences in the degree of cracking among five habitats, and the relationship between cracks and wood density were investigated in a total of 79 logs collected from five sites in ...
Satoru Murakami   +3 more
doaj   +1 more source

Assessments of tree-ring intra-annual δ18O record for reconstructing hydroclimate with high temporal resolution

open access: yesGeoscience Letters, 2023
Tree-ring cellulose oxygen isotopic ratios have been widely studied as a hydrological proxy in monsoonal Asia. There has been, however, little attempt to perform proxy assessment of the intra-annual isotopic data to reconstruct hydroclimate with higher ...
Yumiko Watanabe   +4 more
doaj   +1 more source

Influence of position within the tree stem according to growth-ring width of spruce (Picea abies /L./ KARST.) with compression wood

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2004
The work was focused on problematics of annual-rings width according to position within the tree stem. Annual-ring widths, ratio of late wood and early wood by spruce with compression wood were investigated.
Vladimír Gryc, Jiří Holan
doaj   +1 more source

Evaluation the skid trail effect on annual ring width fluctuations in Beech (Fagus orientalis Lipsky) and Alder (Alnus subcordata C. A. Mey.) trees (District Nav No. 1, Asalem forests, Guilan) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2016
Each skid trail construction affects the trees located on the road margins in various extents. The present study was conducted with the aim to assess the changes in annual ring widths of Beech and Alder trees compared to the control trees inside the Nav ...
Milad Zarei Golbaghi   +3 more
doaj   +1 more source

Juniper from Ethiopia contains a large-scale precipitation signal [PDF]

open access: yes, 2008
Most semiarid regions are facing an increasing scarcity of woody vegetation due mainly to anthropogenic deforestation aggravated by climate changes. However, there is insufficient information to reconstruct past changes in climate and to evaluate the ...
Couralet, C.   +3 more
core   +2 more sources

FORMATION OF «FALSE ANNUAL RINGS» ON SCALE OF JUVENILE COHO SALMON ONCORHYNCHUS KISUTCH IN LAKE KURSIN (LOWER KAMCHATKA RIVER)

open access: yesИзвестия ТИНРО, 2019
During spring-summer flood (in June-July). transit underyearling of coho salmon, having or having no scales, migrate to Lake Kursin at the lower Kamchatka River, where resident coho salmon never spawn.
V. F. Bugaev, D. P. Pogorelova
doaj   +1 more source

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