Results 21 to 30 of about 2,951,677 (344)
Plants, 2020 The coarse roots of Pinus ponderosa included in the cage are the ones most involved in tree stability. This study explored the variations in traits, such as volume, cross-sectional area, and radius length of cage roots, and used those data to develop a ...
Antonio Montagnoli +6 more
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Annual rings in a native Hawaiian tree, Sophora chrysophylla, on Maunakea, Hawaiʻi [PDF]
, 2015 Annual rings are not commonly produced in tropical trees because they grow in a relatively aseasonal environment. However, in the subalpine zones of Hawaiʻi's highest volcanoes, there is often strong seasonal variability in temperature and rainfall ...
Baker, PJ +4 more
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Radiocarbon in annual coral rings of Florida [PDF]
Geophysical Research Letters, 1978 Radiocarbon measurements on a 175‐year (A.D. 1800 to 1974) growth of the coral Montastrea annularis from The Rocks reef off the Florida Keys reveal the rate of local uptake of fossil fuel CO2 and bomb 14C by surface ocean waters of the Gulf Stream. In the nineteenth century, the pre‐bomb, pre‐industrial Δ14C value of surface ocean waters as seen in ...
Druffel, Ellen M, Linick, Timothy W
openaire +3 more sources
Velocity peaks and caustic rings [PDF]
, 1998 The late infall of cold dark matter onto an isolated galaxy produces flows with definite local velocity vectors throughout the galactic halo. It also produces caustic rings, which are places in the halo where the dark matter density is very large.
Bertschinger +12 more
core +3 more sources
Modeling the forming surfaces of wood trunks using spline functions
Наукові праці Лісівничої академії наук України, 2018 It was developed the methodology for modeling complex geometric surfaces of natural origin – a tree trunk using spline functions. It allows to increase the accuracy and reliability of wood assessment in different dimensional characteristics, as well as ...
Yuriy Hrytsiuk, Svitlana Yatsyshyn
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Journal of Environmental Engineering and Landscape Management, 2006 The paper analyses relationship between pine (Pinus sylvestris L.) biomass and the specific activity of an artificial radio‐isotope 137Cs in wood. The specific activity of 137Cs was measured in the segments of pine (Pinus sylvestris L.) annual rings. The
Donatas Butkus +1 more
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Pointer years in the growth of beech trees of the NP "Đerdap" area [PDF]
Glasnik 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
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The use of X-ray method to study annual growth variation of Pinus eldarica [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2013 Using non-destructive methods to study forest productivity and wood quality as well as annual growth variations deserve special importance. In this regard annual growth changes of Pinus eldarica include width of the spring and summer rings and percentage
Saeid Mehrabi
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Radial growth of Quercus robur L. response to climate change in Polissya and Forest-Steppe
Наукові праці Лісівничої академії наук України, 2020 The objects of the study are the old oak stands in Polissya and Forest Steppe, growing in conditions of fresh sugrud and fresh grud. The aim of the study is to identify climatic factors affecting the oak (Quercus robur L.) radial growth in Polissya and ...
Iryna Koval
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Frontiers in Plant Science, 2017 The age of living massive olive trees is often assumed to be between hundreds and even thousands of years. These estimations are usually based on the girth of the trunk and an extrapolation based on a theoretical annual growth rate.
Yael Ehrlich +3 more
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