Results 31 to 40 of about 155,890 (305)

Tree ring analysis of Brachystegia spiciformis and Isoberlinia tomentosa: Evaluation of the enso-signal in the miombo woodland of eastern Africa [PDF]

open access: yes, 2001
The value of growth rings as proxy data for climate reconstruction was studied in two miombo woodland species in eastern Africa. Growth rings, marked by terminal parenchyma, were visually detectable on carefully prepared stem discs of Isoberlinia ...
Beeckman, Hans   +3 more
core   +2 more sources

RECONSTRUCTION AND PREDICTION OF WATER BALANCE COMPONENTS FROM DENDROCHRONOLOGICAL DATA FOR THE NARYN RIVER BASIN (KYRGYZSTAN)

open access: yesЛëд и снег, 2015
Suggested new method for reconstruction of runoff includes: 1. Search informative points based weather observations for dependence runoff = f(climate index).
V. G. Konovalov, O. E. Maksimova
doaj   +1 more source

Radial growth of woody species in the conditions of high anthropogenic load in the city of Krasnoyarsk [PDF]

open access: yesСибирский лесной журнал, 2018
The dynamics of radial growth of tree stem developing in changing conditions of the city of Krasnoyarsk was studied. For Krasnoyarsk, The problem of creating an environment favorable for people living in Krasnoyarsk is an urgent issue and its integral ...
Yu. V. Klad’ko, V. E. benkova
doaj   +1 more source

Arctic tree rings as recorders of variations in light availability [PDF]

open access: yes, 2014
Annual growth ring variations in Arctic trees are often used to reconstruct surface temperature. In general, however, the growth of Arctic vegetation is limited both by temperature and light availability, suggesting that variations in atmospheric ...
Huybers, P., Stine, A. R.
core   +1 more source

Chemical fingerprinting of wood sampled along a pith-to-bark gradient for individual comparison and provenance identification [PDF]

open access: yes, 2020
Background and Objectives: The origin of traded timber is one of the main questions in the enforcement of regulations to combat the illegal timber trade. Substantial efforts are still needed to develop techniques that can determine the exact geographical
Beeckman, Hans   +5 more
core   +2 more sources

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

open access: yes, 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   +1 more source

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

open access: yes, 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   +3 more sources

Cyclic Variation of Residual (CO2 + H2O) and Total Pressure in Conifer Stem and Woody Root Tree Rings [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2018
Tree-ring chronologies of stem discs and core samples have been widely used to reconstruct the climatic conditions of tree growth. However, insufficient attention has been given to the fact that root and stem wood accumulate biogenic gases, whose ...
Boris G. Ageev   +2 more
doaj  

Progress in South America Dendrochronology [PDF]

open access: yes, 2002
South America extends from 11°N to 62°S. Major boundaries such as the Andes on the western side of the continent and the land mass in the tropics create north-south and west-east variations in climate and ecosystems.
Boninsegna, Jose Armando
core   +1 more source

Spruce tree-ring reductions in relation to air pollution and human diseases a case study from Southern Poland

open access: yesEnvironmental & Socio-economic Studies, 2018
The study was conducted in two small municipalities in Małopolskie voivodeship in Southern Poland. Both municipalities are located in mountain basins in the Western Beskids mountain range.Cores were taken from trees growing near the centre of Rabka-Zdrój
Rutkiewicz Paweł, Malik Ireneusz
doaj   +1 more source

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