Variation of vessel lumen diameter in radial direction as an indication of the juvenile wood growth in oak (Quercus petraea Liebl)

Heliñska-Raczkowska, L.

doi:10.1051/forest:19940307

Cited by 31 publications

(16 citation statements)

References 7 publications

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“…Total ring, earlywood and latewood ring-widths averaged 0.97, 0.42 and 0.55 mm, respectively. As previously known [14,22,53,54], latewood proportion ranged from 80 to 50% of total ring width according to cambial age (between 10 and 320 years) (Fig. 3) and there was a strong positive correlation between the total tree-ring width and latewood width (r 2 = 97%).…”

Section: Ring Characteristics Of Cored Oaksmentioning

confidence: 57%

Climate-tree-growth relationships ofQuercus petraeaMill. stand in the Forest of Bercé (“Futaie des Clos”, Sarthe, France)

Lebourgeois¹,

2004

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-The past history of a 300-year-old Quercus petraea stand (the "Futaie des Clos", 8 ha) located 20 km from the town of Le Mans in the Forest of Bercé in the western part of France (Sarthe) was analysed by a dendroecological approach. According to the number of healthy trees alive (> 400), the stand age (> 300 years), and the dimensions of the trees (dia: 92 cm; height: 45.2 m), this plot constitutes one of the most remarkable oak grove in France. High competition pressure between trees appeared to be the most important factor to explain the high-quality timber (high straight stems without wood defaults, narrow regular rings). After an initial 90-year period of decrease, this stand shows a 1 mm·year -1 growth increment from the 1810s to the present. The growth increase of 40-50% occurring for over than 20 years can be interpreted as a response to the increase of harvesting intensity. The influence of climate was evaluated by comparing earlywood, latewood and total ring indices with monthly climatic data collected at Le Mans over the period . Extreme growth years coincided with wet or dry springs (May-June) (± 40% of rainfall in relation to normal conditions) often associated with warm or fresh July. The climatic models accounted for between 18 and 26% of the variability of ring widths, and suggested that earlywood formation depended mainly on previous autumn hydric balance and winter temperature whereas the growth of the latewood band was maximum in early spring (positive effect of May hydric balance). The ecophysiological interpretations of the climatic correlations are discussed. dendroclimatology / tree ring / radial growth / climate / response function / Quercus petraea / long term chronology / pointer years Résumé -Dendroclimatologie du chêne sessile (Quercus petraea Mill.) en forêt de Bercé ("Futais des Clos", Sarthe, France). Une étude dendroécologique a été entreprise afin d'analyser l'évolution de la croissance radiale d'un peuplement âgé de chêne sessile (Quercus petraea Mill.) (la Futaie des Clos) localisé dans la forêt de Bercé à 20 km du Mans (Sarthe -France). En raison du nombre d'arbres présents (plus de 400 sur les 8 ha), de leur âge (> 300 ans en 2001) et de leur dimension (diamètre et hauteur moyens : 92 cm et 45,2 m), ce peuplement constitue une des plus remarquables chênaie sessiliflore de France. La sylviculture peu intensive pratiquée dans le peuplement explique en grande partie la très grande qualité des arbres (tronc très droit sans défaut, cernes fins réguliers). Après une période de décroissance de 90 ans, la largeur moyenne des cernes est d'environ 1 mm par an depuis 1810. L'augmentation de croissance observée depuis une vingtaine d'années peut être interprétée comme l'expression de l'augmentation de l'intensité des éclaircies (diminution de la compétition entre les arbres). L'effet du climat a été analysé en comparant les variations du bois initial, du bois final et du cerne complet aux données climatiques du Mans sur la période 1921-2001. Les années de croissance extrêmes (a...

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Section: Ring Characteristics Of Cored Oaksmentioning

confidence: 57%

Climate-tree-growth relationships ofQuercus petraeaMill. stand in the Forest of Bercé (“Futaie des Clos”, Sarthe, France)

Lebourgeois¹,

2004

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“…As in other species with ring-porous wood, the variation in the diameter of the earlywood vessels in three health groups of oak took the shape of a sigmoid curve (Helińska-Raczkowska 1994;Helińska-Raczkowska and Fabisiak 1999), which means that the diameter increased along the radius, i.e. with the distance from the pith or the age of the cambium until reaching a value around which it fluctuated.…”

Section: Discussionmentioning

confidence: 99%

The anatomical traits of trunk wood and their relevance to oak (Quercus robur L.) vitality

Tulik

2014

Eur J Forest Res

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Oaks' decline in vitality is attributed to a complex process that involves interactions of several factors leading to increased trees' mortality. This study investigates the structure of trunk wood of oaks with reference to its physiological role in hydraulic conductivity. On the basis of the crown condition, the oaks were classified into three health groups: healthy trees, declining trees and dead trees. Anatomical traits of wood, such as annual ring width, vessel density, vessel diameter of earlywood and theoretical hydraulic conductivity, were measured and calculated. The narrowest annual rings formed by the cambium were observed in dead oaks. These trees were also characterized by the smallest diameter of earlywood vessels, not only in the period of occurrence of dieback symptoms, but also during their whole life. It is suggested that the formation of narrow annual rings and earlywood vessels of small diameter increases susceptibility of a tree to decay. A reduced vessel diameter implies changes in hydraulic conductivity of oak trunks and thus impairs the water transport, which affects the health of trees. The process of oak decline is considered to have characteristics of natural selection and leads to the elimination of the weakest trees.

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“…Earlywood vessels were measured ring by ring from 1975 to 1999 (25 years); rings prior to 1975 were not used to avoid the presence of juvenile wood, which has a strong growth trend with smaller and more numerous vessels (Gasson 1987;Helinska-Raczkowska 1994). Earlywood vessels that were misrecognized by the software, had to be manually corrected.…”

Section: Wood Materials and Earlywood Vessel Surveymentioning

confidence: 99%

Ensuring a representative sample of earlywood vessels for dendroecological studies: an example from two ring-porous species

García‐González

Fonti

2007

Trees

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The analysis of time series of wood cell anatomical features (such as the earlywood vessels of ringporous trees) is a successful approach to understand the effect of environmental factors on tree growth and thus constitutes a valuable source of information about past environmental conditions. However, despite the rising interest in analyzing wood anatomical time series, little or no attention has been paid to establish an adequate sample of cells in order to minimize the risk of missing a valuable environmental signal. In order to contribute to such methodological bases, this paper is aimed at (1) identifying a representative sample of earlywood vessels within a tree, which encode the same climatic information, and (2) assessing if it is preferable to obtain the sample of vessels along one or two radii. Four individuals of sessile oak (Quercus petraea (Mattuschka) Liebl.) and sweet chestnut (Castanea sativa Mill.) were harvested and all their earlywood vessel lumina were measured along two 40-mm wide radial strips. Measured vessels were selected stepwise while increasing the tangential width of the wood section from 1 to 40 mm, analyzing at each step (1) the common signal of chronologies and (2) the correlation to the main climatic variables controlling growth. Additionally, both radii in each tree were analyzed together and separately. The results showed that a total tangential width of 10 mm was enough to stabilize the climatic signal with improvement when distributed along two different radii, but a slightly larger tangential width was required to reach an optimal common signal. We suggest that, at least for the case of these two species growing at this specific climatic context, two 5-mm increment cores ensure a representative vessel selection.

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Variation of vessel lumen diameter in radial direction as an indication of the juvenile wood growth in oak (Quercus petraea Liebl)

Cited by 31 publications

References 7 publications

Climate-tree-growth relationships ofQuercus petraeaMill. stand in the Forest of Bercé (“Futaie des Clos”, Sarthe, France)

Climate-tree-growth relationships ofQuercus petraeaMill. stand in the Forest of Bercé (“Futaie des Clos”, Sarthe, France)

The anatomical traits of trunk wood and their relevance to oak (Quercus robur L.) vitality

Ensuring a representative sample of earlywood vessels for dendroecological studies: an example from two ring-porous species

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