Tree Rings
Stable carbon isotopes of tree rings as a tool to pinpoint the geographic origin of timber
... same way as described above. For both these methods, we used data from the corresponding tree rings formed during 1790–1984 (n = 37) for calculating t values of site chronolo- gies from the six interior ...
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Chronological Studies of Traffic Pollution Using Elemental Analysis of Tree Rings: Case Study of Haatso-atomic Road
... annual rings were determined to be ...related tree growth rings to annual rainfall patterns and observed that high precipitation (wet seasons) leads to increased growth of tree ...average ...
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Large scale, millennial length temperature reconstructions from tree rings
... only tree-rings as well as combinations of different archives, so-called multi-proxy reconstructions (see reviews by Christiansen and Ljungqvist, 2017; Frank et ...only tree-rings provide ...
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Utility of Tree Rings and Future Climate Change Projections in Reservoir Sizing.
... using tree-ring chronologies available before the instrumental ...only tree rings (and SST data), the developed model typically explains only around 35-65% variability in observed flows [Woodhouse et ...
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Oxygen isotopes in tree rings record variation in precipitation δ18O and amount effects in the south of Mexico.
... while they move through the hydrological cycle. Therefore, iso- tope ratios of precipitation that are recorded in natural archives like ice cores [Thompson et al., 2006], speleothems [Frappier et al., 2007b; Kennett et ...
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Oxygen isotopes in tree rings show good coherence between species and sites in Bolivia
... cross-dated tree rings using the standard ring-width ap- proach: rings were marked and visually cross-dated across 2 – 4 radii on intact discs, ensuring every tenth ring interconnected between radii ...
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Millennial minimum temperature variations in the Qilian Mountains, China: evidence from tree rings
... 1343-year tree-ring chronology was developed from Qilian junipers in the central Qilian Mountains of the northeastern Tibetan Plateau (TP), ...the tree- ring ...by tree rings may be due to the ...
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Tree demography dominates long-term growth trends inferred from tree rings
... and tree longevity for fast- and slow-growing trees are very difficult to account ...instance, tree ring analysis on dead trees has revealed relationships between tree growth and longevity (Bigler ...
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Millennium-long summer temperature variations in the European Alps as reconstructed from tree rings
... We have collected a large compilation of living and his- toric wood samples from numerous well-distributed, high- elevation wood samples in the European Alps. The data extracted from the DENDRODB relational European ...
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Precipitation changes in the South American Altiplano since 1300 AD reconstructed by tree-rings
... as tree aging or forest disturbances (Cook et ...in tree growth, we used a conservative method of standardization, fitting negative ex- ponential or linear curves with zero or negative slope to each ...
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Tree demography dominates long-term growth trends inferred from tree rings
... a tree at which it reaches the sample size class and its growth rate means that trees that quickly reach the sample size also have a relative high basal area growth at that diameter, which is the main cause for ...
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Using Bigcone Douglas-Fir Fire Scars and Tree Rings to Reconstruct Interior Chaparral Fire History
... The indication of fire evidence outside of the mapped perimeter may imply that some growth events are not evidence of fire and in- stead reflect other environmental changes. However, it is also possible that the use of ...
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Large apparent growth increases in boreal forests inferred from tree-rings are an artefact of sampling biases
... Relative contribution of biases. To disentangle the relative contribution of the two biases, caused by absence of old, fast-growing trees and of young, slow-growing trees from the dataset, to the growth trends, we cre- ...
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Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE
... On top of biological carry-over effects and wood anatomical features, several biotic and abiotic disturbance factors, such as insect outbreaks, fungal diseases and severe climate anomalies, cannot be ignored, especially ...
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Spatial reconstruction of Scottish summer temperatures from tree rings
... Abstract: A detailed understanding of past temporal patterns and spatial expression of temperature variations is important to place recent anthropogenic climate change into a longer term context. In order to fill the ...
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Can 13C stable isotope record of Norway spruce tree rings display the effect of environmental conditions?
... Stable isotope dendroecology is a relatively young field with advances in sample preparation technique, clear physiological background and understanding how environmental factors influence the isotope fractionation. ...
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Reconstructing 800 years of summer temperatures in Scotland from tree rings
... For the subfossil RW data, as with the living data, a standard negative exponential or linear regression (with SF) approach using CID-v1 + v2 versions of the RW data was also used to derive two variants. Further, RCS was ...
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Application of dendroclimatology in evaluation of climatic changes
... annual rings in wet years compared to dry years. Therefore, tree rings and vessel features are valuable proxies in the evaluation of climatic changes, but it is important to select tree ...
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FIRE AND CLIMATE IN A LODGEPOLE FOREST OF CENTRAL IDAHO: ANNUAL, DECADAL, CENTENNIAL, AND MILLENNIAL PERSPECTIVES
... AD. Tree rings from the Columbia Ice Field (Alberta, Canada, northern Rocky Mountains) indicate that the periods from 1275 to 1294 AD and 1311 to 1330 AD were the fifth and eleventh coldest 20-year periods, ...
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Quiver Generalized Weyl Algebras, Skew Category Algebras and Diskew Polynomial Rings
... (skew tree rings, skew semi-Laurent polynomial rings, etc); to give criteria for a skew category algebra to be a left/right Noetherian algebra (Theorem ...
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