1971
DOI: 10.1139/x71-010
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Distribution of Diurnal Fluctuations in Stem Circumference of Douglas-fir

Abstract: Diurnal circumferential fluctuations were measured during late summer at different locations on the stems of several Douglas-fir trees.In one study, devices were installed to record periodically circumferential changes at five levels on the stems of study trees. The results indicated that the amplitude of diurnal fluctuation is considerably greater in a zone adjacent to midcrown than at levels above or below. Within this zone, shrinkage and subsequent dimensional recovery begin sooner and proceed at the greate… Show more

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Cited by 56 publications
(21 citation statements)
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“…A similar situation indicating the importance of changes in the soil water supply for stem hydraulics has already been confirmed for broad-leaf species [9]. Under [11,13,26] …”
supporting
confidence: 69%
“…A similar situation indicating the importance of changes in the soil water supply for stem hydraulics has already been confirmed for broad-leaf species [9]. Under [11,13,26] …”
supporting
confidence: 69%
“…These sensors measure the change in tissue water status that occurs during the day. Stem shrinkage is the result of the water loss and the reduction in turgor in the phloem and cambium tissues as a result of redistribution of water in response to the imposed water potential gradient (Dobbs andScott 1971, Molz andKlepper 1973).…”
mentioning
confidence: 99%
“…15) ceux décrits dans les études antérieures, puisque l'amplitude des fluctuations augmente généralement de la souche à la cime Braekke and Kozlowski, 1975;. Les fluctuations radiales sont proportionnelles à l'épaisseur des tissus vivants extensibles de l'écorce, c'est-à-dire le cambium, le phloème et le parenchyme et à la quantité d'eau qu'ils contiennent (Holbrook, 1995;Dobbs and Scott, 1971;Molz and Klepper, 1973;. Quant aux tissus ligneux du xylème, ils ne contribuent que très peu aux fluctuations radiales .…”
Section: Séparation Du Signal Annuel En Périodesunclassified
“…Les tissus se contractent durant la journée, lorsqu'un déficit hydrique se développe, pour reprendre à nouveau de l'expansion durant la nuit, lors de la réhydratation (Pearson, 1924;Kozlowski and Winget, 1964;Dobbs and Scott, 1971;Braekke and Kozlowski, 1975;Kozlowski, 1972;Irvine and Grace, 1997).…”
Section: Introductionunclassified
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