Radial variation of vessel lumen diameter in relation to stem increment in 30 hardwood species

Tsuchiya, Ryouta; Furukawa, Ikuo

doi:10.1163/22941932-90000222

Cited by 12 publications

(8 citation statements)

References 12 publications

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“…This ontogenetic increase compensates for the higher resistance imposed by a longer pathway in tall trees (Tyree & Zimmermann, 2002). This is often presented as a difference between juvenile and mature wood, but the change can be gradual and can take place over several decades (Tsuchiya & Furukawa, 2010Schuldt et al, 2013.…”

Section: New Phytologistmentioning

confidence: 99%

Wood traits related to size and life history of trees in a Panamanian rainforest

et al. 2016

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SummaryWood structure differs widely among tree species and species with faster growth, higher mortality and larger maximum size have been reported to have fewer but larger vessels and higher hydraulic conductivity (Kh). However, previous studies compiled data from various sources, often failed to control tree size and rarely controlled variation in other traits.We measured wood density, tree size and vessel traits for 325 species from a wet forest in Panama, and compared wood and leaf traits to demographic traits using species-level data and phylogenetically independent contrasts.Wood traits showed strong phylogenetic signal whereas pairwise relationships between traits were mostly phylogenetically independent. Trees with larger vessels had a lower fraction of the cross-sectional area occupied by vessel lumina, suggesting that the hydraulic efficiency of large vessels permits trees to dedicate a larger proportion of the wood to functions other than water transport.Vessel traits were more strongly correlated with the size of individual trees than with maximal size of a species. When individual tree size was included in models, Kh scaled positively with maximal size and was the best predictor for both diameter and biomass growth rates, but was unrelated to mortality.

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Section: New Phytologistmentioning

confidence: 99%

Wood traits related to size and life history of trees in a Panamanian rainforest

et al. 2016

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“…Previous studies may have examined links between vital rates and wood traits at particular stages, e.g., only in adult wood (but see Russo et al, 2010, which considered sapling vital rates). Support for this comes from the fact that anatomical trait values frequently shift between sapling and adult wood (Zobel and Sprague, 1998; Tsuchiya and Furukawa, 2009; Naji et al, 2013), and in one study the growth–mortality tradeoff was stronger for saplings than for large trees (Wright et al, 2010).…”

mentioning

confidence: 99%

Linking wood traits to vital rates in tropical rainforest trees: Insights from comparing sapling and adult wood

Osazuwa‐Peters

Wright

Zanne

2017

American J of Botany

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Wood traits of sapling trees provide functional insight into the growth-mortality tradeoff. Sapling wood with relatively large fiber lumen area and wide vessels, enabling faster hydraulic transport but less mechanical strength, is associated with fast growth and high mortality. Sapling wood with relatively more fiber wall and many narrow vessels, enabling greater mechanical strength but slower hydraulic transport, is associated with slow growth and low mortality.

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“…As fibras desempenham papel fundamental na sustentação das árvores. Além disso, variações nessas células têm sido empregadas para diferenciar lenho juvenil de adulto (GATTO et al, 2008;TSUCHIYA;FURUKAWA, 2009). Em P. reticulata, mesmo com algumas flutuações, observou-se aumento no comprimento das fibras da medula para a casca nas três alturas, sendo esta, entre as características das fibras, a que aparentemente melhor indicou as alterações ao longo do amadurecimento do câmbio, uma vez que os valores obtidos próximos à casca foram significativamente maiores do que aqueles da medula nas três alturas.…”

Section: Discussionunclassified

ESTRUTURA DO LENHO DE Plathymenia reticulata E ALGUMAS IMPLICAÇÕES NA EFICIÊNCIA HIDRÁULICA E RESISTÊNCIA MECÂNICA

Longui¹,

Lima²,

Flörsheim³

et al. 2012

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Investigou-se a variação anatômica, velocidade de propagação do som (v), densidade aparente (ρap) e módulo de elasticidade dinâmico (MOEd) na madeira de Plathymenia reticulata. Verificou-se como as variações nessas características podem influenciar na eficiência hidráulica e resistência mecânica. Para a anatomia, empregaram-se as metodologias usuais, a (v) foi medida com equipamento de ultrassom, a (ρap) foi determinada pelo método da balança hidrostática, e a partir dos valores de (v) e (ρap) foi calculado o (MOEd). O diâmetro de vasos aumentou na direção da casca, o que deve acarretar melhor eficiência hidráulica. A frequência de vasos e o MOEd correlacionaram-se negativamente na região da medula, indicando madeira mais flexível e mais resistente à ação dos ventos. Raios mais frequentes diminuem a (v), e como esta também indica a rigidez, regiões com maior frequência de raios apresentam maior flexibilidade. Fibras com paredes mais espessas na base do fuste podem aumentar a resistência das árvores ao receberem uma carga extra. A relação negativa entre ρap e lume das fibras deve-se ao fato de o lume representar espaços vazios que não contribuem na massa. Raios mais largos na direção da casca podem auxiliar no armazenamento de amido, que, quando hidrolisado, também atua na recuperação de vasos embolizados.Palavras-chave: Amarelinho; anatomia da madeira; propriedades da madeira; variação axial; variação radial. AbstractWood structure of Plathymenia reticulata and some implications on hydraulic efficiency and mechanical strength. We investigated the anatomical variation, speed of sound propagation (v), specific gravity (ρap) and dynamic modulus of elasticity (MOEd) in the wood of Plathymenia reticulate Benth. The aim was to determine how variations in these characteristics may influence the hydraulic efficiency and mechanical strength. The anatomical features were analyzed according to usual techniques; (v) was measured with ultrasound equipment, (ρap) was determined with “balança hidrostática” method and from (v) and (ρap) values was calculated (MOEd). The results showed that increase in vessel diameter from pith to bark can result in better hydraulic efficiency. The negative correlation between vessels frequency and MOEd in the pith indicates more flexible wood, contributing to the resistance of young tree to wind action. Rays more frequent decreased (v), as this is also an indication of stiffness; regions with the highest ray frequency provide higher flexibility. Fibers with thicker walls at the base of the stem can increase the tree resistance when they receive an extra load. The negative relationship between ρap and fibers lumen is due increase in empty spaces that no contributed in wood mass. Wider rays in the bark direction can contributed in the storage of starch, which when hydrolyzed can retrieve embolized vessels.Keywords: Amarelinho; wood anatomy; wood properties; axial variation; radial variation.

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Radial variation of vessel lumen diameter in relation to stem increment in 30 hardwood species

Cited by 12 publications

References 12 publications

Wood traits related to size and life history of trees in a Panamanian rainforest

Wood traits related to size and life history of trees in a Panamanian rainforest

Linking wood traits to vital rates in tropical rainforest trees: Insights from comparing sapling and adult wood

ESTRUTURA DO LENHO DE Plathymenia reticulata E ALGUMAS IMPLICAÇÕES NA EFICIÊNCIA HIDRÁULICA E RESISTÊNCIA MECÂNICA

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