“Plastic” and “static” behavior of vessel-anatomical features in Oriental beech (Fagus orientalis Lipsky) in view of xylem hydraulic conductivity

Oladi, Reza; Bräuning, Achim; Pourtahmasi, Kambiz

doi:10.1007/s00468-013-0966-x

Cited by 32 publications

(23 citation statements)

References 50 publications

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“…We found evidence for this assumption as a negative relationship between theoretical specific hydraulic conductivity, and sample location height within the crown was highlighted in this study. It was previously reported that a decrease in theoretical specific hydraulic conductivity is most closely related to a decrease in water availability because the turgor pressure as the driving force of cell expansion is largely affected by water availability [48,49]. Based on these findings, we could presumably conclude that the negative relationship between theoretical specific hydraulic conductivity and sample location height within the crown would be due to a reduced water availability and water supply potential occurring upward.…”

Section: Trait Variation and Plasticity Within The Crownmentioning

confidence: 59%

Foliar and Wood Traits Covary along a Vertical Gradient within the Crown of Long-Lived Light-Demanding Species of the Congo Basin Semi-Deciduous Forest

Kafuti

Bourland

Mil

et al. 2019

Forests

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Plant functional traits have shown to be relevant predictors of forest functional responses to climate change. However, the trait-based approach to study plant performances and ecological strategies has mostly been focused on trait comparisons at the interspecific and intraspecific levels. In this study, we analyzed traits variation and association at the individual level. We measured wood and leaf traits at different height locations within the crown of five individuals of Pericopsis elata (Harms) Meeuwen (Fabaceae) from the northern tropical forest of the Democratic Republic of the Congo. All traits varied between and within individuals. The between-individual variation was more important for leaf traits (23%–48%) than for wood traits (~10%) where the within-individual variation showed to be more important (33%–39%). The sample location height within the crown was found to be the driving factor of this within-individual variation. In a gradient from the base to the top of the crown, theoretical specific hydraulic conductivity and specific leaf area decreased while the stomatal density increased. We found significant relationships among traits and between wood and leaf traits. However, these relationships varied with the position within the crown. The relationship between vessel size and vessel density was negative at the bottom part of the crown but positive upward. Also, the negative relationship between stomatal density and stomatal size became stronger with increasing height within the crown. Finally, the positive relationship between specific leaf area and theoretical specific hydraulic conductivity became stronger in higher parts of the crown, suggesting that P. elata constantly adapts its water use with respect to its water supply, more strongly at the top of the crown where the environment is more extreme and less buffered against environmental fluctuations.

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Section: Trait Variation and Plasticity Within The Crownmentioning

confidence: 59%

Foliar and Wood Traits Covary along a Vertical Gradient within the Crown of Long-Lived Light-Demanding Species of the Congo Basin Semi-Deciduous Forest

Kafuti

Bourland

Mil

et al. 2019

Forests

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“…Changes in vessel diameter size generally provide inferences about the potential radial growth rates of trees, since larger vessels have a higher k theo s and consequently ensure increased water supply to support enhanced transpiration and photosynthetic rates (e.g., Meinzer et al, 2008Meinzer et al, , 2010Smith et al, 2013;Hoeber et al, 2014;Oladi et al, 2014). The relation between higher growth capacity and vessel size becomes understandable, considering that the theo.…”

Section: Arithmetic Vessel Diameter: Distribution and Meansmentioning

confidence: 99%

Nutrient-Induced Modifications of Wood Anatomical Traits of Alchornea lojaensis (Euphorbiaceae)

2016

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Regarding woody plant responses on higher atmospheric inputs of the macronutrients nitrogen (N) and phosphorous (P) on tropical forests in the future, an adaptive modification of wood anatomical traits on the cellular level of woody plants is expected. As part of an interdisciplinary nutrient manipulation experiment (NUMEX) carried out in Southern Ecuador, we present here the first descriptive and quantitative wood anatomical analysis of the tropical evergreen tree species Alchornea lojaensis (Euphorbiaceae). We sampled branch wood of nine individual trees belonging to treatments with N fertilization, N+P fertilization, and a control group, respectively. Quantitative evaluations of eleven different vessel parameters were conducted. The results showed that this endemic tree species will be able to adapt well to the future effects of climate change and higher nutrient deposition. This was firstly implied by an increase in vessel diameter and consequently a higher theo. area-specific hydraulic conductivity with higher nutrient availability. Secondly, the percentage of small vessels (0-20 µm diameter) strongly increased with fertilization. Thirdly, the vessel arrangement (solitary vessels vs. multiple vessel groupings) changed toward a lower percentage of solitary vessel fraction (V S ), and concurrently toward a higher total vessel grouping index (V G ) and a higher mean group size of non-solitary vessels (V M ) after N and N+P addition. We conclude that higher nutrient availability of N and N+P triggered higher foliage amount and water demand, leading to higher cavitation risk in larger vessels. This is counteracted by a stronger grouping of vessels with smaller risk of cavitation to ensure water supply during drier periods that are expected to occur in higher frequency in the near future.

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“…So far, due to the important role of vessels and tracheids in shaping the hydraulic properties of water uplift from the soil to the leaves (Tyree and Zimmermann 2002), these investigations have mainly focused on the characteristics of the water conducting tissue. Examples of identified associations between water conducting cells and the environmental condition have been found in both hardwood and softwood species across a large array of biomes from tropical (Verheyden et al 2005), to subtropical (Oladi et al 2014), Mediterranean (DeSoto et al 2011Olano et al 2013a;Hetzer et al 2014), temperate and boreal (Kirdyanov et al 2003;Fonti et al 2013). In contrast, despite the important role of the parenchyma tissue for storage and for regulating physiological processes occurring in the xylem and/or in connection to the phloem (Spicer 2014), only very few studies have investigated its environmental sensitivity (Eckstein and Schweingruber 2009).…”

Section: Introductionmentioning

confidence: 99%

Variability of ray anatomy of Larix gmelinii along a forest productivity gradient in Siberia

Fonti

Tabakova

Kirdyanov

et al. 2015

Trees

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Key message This study provides new data and an alternative framework to the debate of tree carbon economy in a context of increasing stress. Abstract For long-living trees, the resilience in times of stress is directly linked to the amount of accessible reserves. Despite the simplicity of this principle, the understanding of how carbon reserves limit growth and/or induce mortality under global change is still debated. In this study, we quantify how anatomical properties of rays-one of the main container for carbon reserves in tree stems-vary among sites, individuals, and annual rings of Larix gmelinii growing in contrasting sites in Siberia to verify if (1) the ray proportion and anatomical structure is linked to the environment, and/or (2) to changes in other wood tissues. Our observations have highlighted that ray proportion mainly varies among individuals, but little among sites and consecutive annual rings. We also observed that ray size and density scale to the wood structure with a relatively constant ratio of *2.5 rays per tracheid, independent of site conditions. These results suggest that the functional connection between the anatomy of rays and tracheid is unaffected by environment and highlight the importance of considering allometric relations in ecological comparisons. Comparative studies of long-term trajectory of ray proportion of living and dead trees might unravel observed variability among individuals validating the link between long-term depleted reserves and mortality.

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“Plastic” and “static” behavior of vessel-anatomical features in Oriental beech (Fagus orientalis Lipsky) in view of xylem hydraulic conductivity

Cited by 32 publications

References 50 publications

Foliar and Wood Traits Covary along a Vertical Gradient within the Crown of Long-Lived Light-Demanding Species of the Congo Basin Semi-Deciduous Forest

Foliar and Wood Traits Covary along a Vertical Gradient within the Crown of Long-Lived Light-Demanding Species of the Congo Basin Semi-Deciduous Forest

Nutrient-Induced Modifications of Wood Anatomical Traits of Alchornea lojaensis (Euphorbiaceae)

Variability of ray anatomy of Larix gmelinii along a forest productivity gradient in Siberia

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