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The tangential diameter distributions for Scots pine were very similar in both earlywood and latewood, having one wide peak. Also, the distributions in whole stem, top pulpwood and sawmill chip assortments were quite similar. The differences between Scots pine and Norway spruce tracheid cross-sectional dimensions were fairly marginal.
Get PriceAs Scots pine is another important tree species for the Nordic forest industry, this study focuses on its cross-sectional tracheid properties. Another focus is the comparison of tracheid dimensions of Scots pine and Norway spruce, because chips of these species are often mixed in the chemical pulping process.
Get PriceWater potential control of turgor-driven tracheid enlargement in Scots pine at its xeric distribution edge Antoine Cabon1,2, Laura Fernandez-de-U~na 3,4, Guillermo Gea-Izquierdo3, Frederick C. Meinzer5, David R. Woodruff5, Jordi Martınez-Vilalta2,6 and Miquel De Caceres1,2 1Joint Research Unit CTFC - AGROTECNIO, Solsona 25280, Spain; 2CREAF, Bellaterra (Cerdanyola del Valles), Catalonia ...
Get Price2019-4-3 · variation in the growth ring diameter, tracheid dimensions and specific gravity and linear regression to relate the tracheid features to specific gravity. Statistical analysis was performed employing the SigmaStat 3.5 software for Windows (SPSS Incorporation). 3 RESULTS AND DISCUSSION 3.1 Radial Variation of Tracheid Features and
Get PriceThe tracheid dimensions and wood density showed stabilization between the eighth and the eleventh years old rings. Moreover, the tracheid dimensions varied between sites and did not present a pattern of variation in relation to soil properties at the different sites
Get PriceTo show variation in tracheid dimensions along a ring, cell morphological measurements were grouped by radial file in pro-files called tracheidograms (Vaganov, 1990). However, because the number of cells varied among radial files within and between trees, tracheidograms were standardized according to …
Get Pricetraits were assessed for 97 branches from 12 Scots pine sites across Europe. 3. To test alternative hypotheses on cause–effect relationships between anatomical traits, hydraulic traits and branch growth, we measured for each branch: the tracheid hydraulic diame-
Get Price2014-5-28 · The growth rate of Norway spruce and Scots pine has influence on wood density and tracheids dimensions and cell wall composition. Tracheids length and width increase rapidly during the first years of radial growth. The main factor causing variation in tracheid characteristics is …
Get PriceOur results support the hypothesis that tracheid enlargement and final dimensions can be modeled based on the direct effect of water potential on turgor-driven cell expansion. We argue that such a mechanism is consistent with other reported patterns of tracheid dimension variation.
Get Price2019-8-28 · The extent to which water availability can be used to predict the enlargement and final dimensions of xylem conduits remains an open issue. We reconstructed the time course of tracheid enlargement in Pinus sylvestris trees in central Spain by repeated measurements of tracheid diameter on microcores sampled weekly during a 2 yr period. We analyzed the role of water availability in these ...
Get PriceTracheid radial dimensions were determined using the public-domain image analysis software (Image-J 136b; NIH, Bethesda, Maryland, USA). Lumen diameter, cell wall thickness and total cell number were measured along three radial files in each annual ring (Figure 1).A mean radial file for each ring was then calculated by normalizing the radial file by the minimum number of cells per ring and ...
Get Price2015-3-12 · Read 'Biophysical modelling of intra-ring variations in tracheid features and wood density of Pinus pinaster trees exposed to seasonal droughts, Tree Physiology' on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Get Price2020-5-12 · In 2014, no significant differences in tracheid dimensions were observed between the girdled area and the control trees, while in 2015, the control trees showed significantly smaller cell wall thickness and radial dimensions of the latewood tracheids (LW) compared to 2014 and girdled trees had no occurrence of LW.
Get Price2015-9-10 · Comparative dendroclimatic study of Scots pine, Norway spruce, and silver fir in the Vrancea Range, Eastern Carpathian Mountains. Trees 23, 95–106. 10.1007/s00468-008-0258-z [Google Scholar] Bryukhanova M., Fonti P. (2013). Xylem plasticity allows rapid hydraulic adjustment to …
Get PriceThe tangential diameter distributions for Scots pine were very similar in both earlywood and latewood, having one wide peak. Also, the distributions in whole stem, top pulpwood and sawmill chip assortments were quite similar. The differences between Scots pine and Norway spruce tracheid cross-sectional dimensions were fairly marginal.
Get Price2021-3-18 · Europe PMC is an archive of life sciences journal literature.
Get Price2015-4-24 · The high variation of vessel diameter below this threshold may represent a fine-tuning mechanism to adapt to the site-specific climatic conditions. The Influence of Climatic Parameter on Vessel Diameter. We interpret the variability in vessel diameter in trembling aspen as a fine-tuning mechanism to different environments.
Get Price2014-1-1 · Tracheid dimensions are directly linked to the tree water status at the time of cell formation (Kozlowski and Pallardy, 1997), and larger tracheids correspond to increased water conductivity (McCulloh et al., 2010).
Get Price2014-3-4 · 50, E- 46980 Paterna Valencia, SPAIN • Occupation or position held Post-doctoral fellow (EC Marie Curie Post-Doctoral Fellowship) • Main activities and responsibilities Responsible for the project ^haracterisation of packaging from paper and paper products through the study of fibre composition _ (contract number HPMD-CT-2000-00043)
Get Price2015-11-18 · Ray parenchyma is an essential tissue for tree functioning and survival. This living tissue plays a major role for storage and transport of water, nutrients, and non-structural carbohydrates (NSC), thus regulating xylem hydraulics and growth. However, despite the importance of rays for tree carbon and water relations, methodological challenges hamper knowledge about ray intra- and inter-tree ...
Get PriceTracheid radial dimensions were determined using the public-domain image analysis software (Image-J 136b; NIH, Bethesda, Maryland, USA). Lumen diameter, cell wall thickness and total cell number were measured along three radial files in each annual ring (Figure 1).A mean radial file for each ring was then calculated by normalizing the radial file by the minimum number of cells per ring and ...
Get Price2021-3-18 · Europe PMC is an archive of life sciences journal literature.
Get Price2014-1-1 · Tracheid dimensions are directly linked to the tree water status at the time of cell formation (Kozlowski and Pallardy, 1997), and larger tracheids correspond to increased water conductivity (McCulloh et al., 2010).
Get Price2015-4-24 · The high variation of vessel diameter below this threshold may represent a fine-tuning mechanism to adapt to the site-specific climatic conditions. The Influence of Climatic Parameter on Vessel Diameter. We interpret the variability in vessel diameter in trembling aspen as a fine-tuning mechanism to different environments.
Get Price2016-3-23 · Wood formation in European beech (Fagus sylvatica L.) and Scots pine (Pinus sylvestris L.) was intra-annually monitored to examine plastic responses of the xylem phenology according to altitude in one of the southernmost areas of their distribution range, i.e., in the Moncayo Natural Park, Spain.The monitoring was done from 2011 to 2013 at 1180 and 1580 m a.s.l., corresponding to the lower and ...
Get Price2016-6-15 · Variation in xylem vessel diameter is one of the most important parameters when evaluating plant water relations. This review provides a synthesis of the ecophysiological implications of variation in lumen diameter together with a summary of our current understanding of vessel development and its endogenous regulation.
Get Price2017-6-29 · The reliability of Scots pine carbon isotopes from northern Finland and the oak carbon isotopes from southern Finland was lower after 1917 than in the entire time series (northern pines 0.22 vs. 0.18, southern oaks 0.08 vs 0.01), thus in contrast with the findings of McCarroll et all . There was a clear improvement in the reliability of the ...
Get Price2020-6-6 · variation (probability 0.007) among all studied populations, accounting for 1% of the total variance, while most genetic variation (99%, p = 0.300) remained within populations (Table 7). Table 7. Analysis of molecular variance (AMOVA) results for genetic variation between and among investigated populations. Source of Variability d.f. 1 Sum of ...
Get PriceMy professional background is mycology and forest pathology. I am a senior research scientist/research professor (2015) with PhD in forest pathology (Norwegian University of Life Sciences, NMBU, 1995). My professional focus is forest health, diagnosing of diseases and disorders in forest trees, evaluation of biotic and abiotic damage in forests, invasive pathogens, ...
Get PriceWood density is one of the most important and well documented wood quality attributes. However, studies focusing on the effects of thinning combined with pruning on wood density in Mediterranean areas are scarce, even though both are recommended practices in forests managed for the production of high-quality timber. We assess the effects of both silvicultural interventions on wood density ...
Get PriceTracheid radial dimensions were determined using the public-domain image analysis software (Image-J 136b; NIH, Bethesda, Maryland, USA). Lumen diameter, cell wall thickness and total cell number were measured along three radial files in each annual ring (Figure 1).A mean radial file for each ring was then calculated by normalizing the radial file by the minimum number of cells per ring and ...
Get Price2015-3-12 · Read 'Biophysical modelling of intra-ring variations in tracheid features and wood density of Pinus pinaster trees exposed to seasonal droughts, Tree Physiology' on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Get Price2014-7-25 · Within-tree variation in growth rate and cell dimensions in the wood of black locust (Robinia pseudoacacia L.). IAWA J. 23(2): 191-199 39. Passialis, C. and S. Adamopoulos. 2002. A comparison of three NDT methods for determining the modulus of elasticity in flexure of fir and black locust small clear wood specimens.
Get Price2020-6-6 · variation (probability 0.007) among all studied populations, accounting for 1% of the total variance, while most genetic variation (99%, p = 0.300) remained within populations (Table 7). Table 7. Analysis of molecular variance (AMOVA) results for genetic variation between and among investigated populations. Source of Variability d.f. 1 Sum of ...
Get Price2020-5-12 · Abstract. As the global climate warms, increased aridity is expected to become a major determinant of forest productivity and tree growth. In gymnosperms, wood density quantified at seasonal to annual scales can be related to changes in tracheid …
Get Price2014-10-2 · Similar trends are found among conifer species of arid (DeSoto et al., 2011) and mesic sites of Spain (Martin-Benito et al., 2013). On the other hand, larger tracheid dimensions with increasing drought severity have been reported for Pinus sylvestris in the Iberian peninsula (Martín et al., 2010) and in the Alps (Eilmann et al., 2009).
Get Price2018-9-18 · A counterexample of McKinnon gives a family of strictly convex functions in two dimensions and a set of initial conditions for which the Nelder--Mead algorithm converges to a nonminimizer. It is not yet known whether the Nelder--Mead method can be proved to converge to a minimizer for a more specialized class of convex functions in two dimensions.
Get PriceThe radial variation in MOR was mainly affected by AD, whereas MOE was affected by MFA and AD. Higher F-values obtained by analysis of variance and coefficient of variation were observed for all properties at the 6th–15th annual ring, except for AD at the 6th–10th annual ring. This result suggests that the contribution of genetic effect is ...
Get PriceThe latent class regression models developed for the separate classes explained the variation in bow, spring, and twist to a higher degree than a single regression model over the entire dataset. For bow, R 2 increased from 0.13 to 0.24 and 0.41 for Class 1 and Class 2, for spring from 0.24 to 0.45 and 0.67, and for twist from 0.15 to 0.38 and 0 ...
Get Price2013-5-15 · View raw image; Pseudoproxy studies of detrending. Pseudoproxy reconstructions using RCS, SF, and standard (STD) detrending applied to a set of simulated tree-ring MXD series with (a) an imbedded white noise random pseudoclimate target signal, (b) a “local” summer temperature series for the grid location corresponding to the Firth River chronology from the CSM1.4 millennium GCM …
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