Pathological tree-ring structures in Siberian juniper (juniperus sibirica burgsd.) and their use for reconstructing extreme climatic events

2000 ◽  
Vol 31 (3) ◽  
pp. 167-173 ◽  
Author(s):  
R. M. Hantemirov ◽  
L. A. Gorlanova ◽  
S. G. Shiyatov
Keyword(s):  
Tree Ring ◽  
Extreme Climatic Events ◽  
Ring Structures

Tree-ring evidence for a combined influence of defoliators and extreme climatic events in the dynamics of a high-altitude balsam fir forest, Mount Mégantic, southern Quebec

2004 ◽  
Vol 34 (7) ◽  
pp. 1436-1443 ◽  
Author(s):  
Chantal Lemieux ◽  
Louise Filion
Keyword(s):  
High Altitude ◽  
Tree Ring ◽  
Abies Balsamea ◽  
Balsam Fir ◽  
Conservation Area ◽  
Growth Anomalies ◽  
Extreme Climatic Events ◽  
Ice Storms ◽  
The Impact ◽  
Tree Development

Most mature balsam fir trees (Abies balsamea (L.) Mill.) growing at the top of Mount Mégantic (Quebec) exhibit multiple leaders in the upper crown section, an indication of stressful conditions for tree development in this high-altitude stand. We report here on a detailed dendroecological analysis of windthrown trees showing that multiple stem development was linked to spruce budworm activity during the 1970s. In spite of severe defoliation, damaged trees temporarily restored their vegetative structure by forming reiterated axes. About 9% of all leaders sampled died during a 3-year period (1996-1998), which represents 60% of dead leaders sampled, with tree morbidity and mortality also peaking in 1996. Tree-ring dating of growth anomalies indicated the impact of major snow and (or) ice storms during the 1996 and 1998 winters, two events validated by field observations from the Mount Mégantic conservation area authorities. Biotic (defoliators) and extreme climatic events have a combined influence in the dynamics of high-altitude balsam fir forests.

scholarly journals Missing Rings in Pinus halepensis – The Missing Link to Relate the Tree-Ring Record to Extreme Climatic Events

2016 ◽  
Vol 7 ◽  
Author(s):  
Klemen Novak ◽  
Martin de Luis ◽  
Miguel A. Saz ◽  
Luis A. Longares ◽  
Roberto Serrano-Notivoli ◽  
...  
Keyword(s):  
Tree Ring ◽  
Pinus Halepensis ◽  
Missing Link ◽  
Extreme Climatic Events

scholarly journals Tree-Ring Anomalies in Toona Ciliata

IAWA Journal ◽  
2006 ◽  
Vol 27 (2) ◽  
pp. 213-231 ◽  
Author(s):  
Ingo Heinrich ◽  
John Charles Gripper Banks
Keyword(s):  
Tree Ring ◽  
Wood Anatomy ◽  
Ring Width ◽  
Increment Core ◽  
Growth Anomalies ◽  
False Rings ◽  
Ring Structures ◽  
Toona Ciliata ◽  
Ring Analysis ◽  
Growth Experiments

New increment core samples of Toona ciliata collected in the Australian tropics and subtropics compared to already existing material from the Upper Kangaroo Valley, near Sydney exhibit distinct differences in tree-ring structures. This necessitated a closer examination of the wood anatomy, possible false rings and the speciesʼ crossdating capacity in northeast Australia. During tree-ring analysis two growth anomalies (extensive zones of narrow and indistinct rings) and three types of false rings were discovered which complicated crossdating. However, in growth experiments only one type of false ring could be induced artificially by totally defoliating young trees. It was possible to alter their phenological performance by artificially changing the environmental conditions. Visual crossdating of samples originating from northeast Australia was feasible within and between trees. For selected years a positive relationship between ring width and precipitation data was found.

Extreme climatic events in the Republic of Tuva according to tree-ring analysis

2015 ◽  
Vol 8 (4) ◽  
pp. 414-422
Author(s):  
V. V. Barinov ◽  
V. S. Myglan ◽  
A. V. Taynik ◽  
O. C. Oydupa ◽  
E. A. Vaganov
Keyword(s):  
Tree Ring ◽  
Tree Ring Analysis ◽  
Extreme Climatic Events ◽  
The Republic ◽  
Ring Analysis

Calculation of Acoustic Transfer Properties of Closed-Loop Type Pipeline Systems Having More Than One Output

1989 ◽  
Vol 111 (3) ◽  
pp. 331-336
Author(s):  
I. Gyo¨ri ◽  
G. Joo´
Keyword(s):  
Comparative Study ◽  
Tree Ring ◽  
Closed Loop ◽  
Analytical Description ◽  
Tree Structure ◽  
Reciprocating Compressor ◽  
Closed Loops ◽  
Pipeline Systems ◽  
Ring Structures ◽  
Transfer Properties

Expanding the previously elaborated algorithm of tree structure pipeline systems of reciprocating compressor installations, the paper introduces an analytical description and a procedure for combined tree-ring structures having more than one output points. A comparative study of the suggested method and the four-pole representation of simple closed loops is presented including a numerical example as well.

Identification of a CVD Synthetic Diamond with a 'Tree Ring' Growth Pattern

2015 ◽  
Vol 34 (8) ◽  
pp. 702-710
Author(s):  
Yan Lan ◽  
Rong Liang ◽  
Taijin Lu ◽  
Yong Zhu ◽  
Tianyang Zhang ◽  
...  
Keyword(s):  
Tree Ring ◽  
Growth Pattern ◽  
Synthetic Diamond
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