The Buttressed Blue Marble Tree: Wood and Growth Characteristics of Elaeocarpus angustifolius (Elaeocarpaceae)

Woodcock, Deborah; Santos, Gizelly; Taylor, David

doi:10.1006/anbo.1999.0985

Cited by 13 publications

(12 citation statements)

References 22 publications

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“…1 and 2, Table 1). As in previous studies (Ismail et al 1995;Lei et al 1996;Gartner et al 1997;Helinska-Raczkowska and Fabisiak 1999;Woodcock et al 2000;Adamopoulos and Voulgaridis 2002;Leal et al 2003), the vessel size increased radially away from the pith in the trunk sections, though in the lower trunk, the increase from the intermediate to the outer wood was not significant. Because the increase in vessel size in the trunk was greater than the initial decrease in frequency, there was an increase in the vessel area fraction from the core wood to outer wood in the trunk sections.…”

Section: Resultssupporting

confidence: 62%

Are radial changes in vascular anatomy mechanically induced or an ageing process? Evidence from observations on buttressed tree root systems

Christensen-Dalsgaard

Ennos

Fournier

2008

Trees

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To investigate the effect of changes in mechanical loading conditions on radial anatomical patterns, we here compare the trunk with the roots in two locations of three species of buttressed trees. The proximal part of the buttress roots is highly mechanically loaded throughout juvenile growth whereas the distal part of the buttresses is though to be mechanically unimportant at formation but become progressively more mechanically loaded during growth. We measured the frequency and diameter of the vessels and the vessel area fraction, and from this calculated the specific conductivity of tissue samples of the core-, intermediate-and outer wood. As in previous studies there was an increase in vessel size, vessel area fraction and specific conductivity from the pith to the bark in the trunk. In the proximal part of the buttress roots, however, there was no increase in vessel size and conductivity from core wood and out in agreement with the high mechanical loading found here throughout growth. There was instead a decrease in vessel size, vessel area fraction and specific conductivity from core-to outer wood in the distal part of the buttress roots in accordance with the increase in mechanical loading. Hence, it appears that the radial anatomical patterns are not a passive function of cambial ageing but may be modified in response to local mechanical loading.

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Section: Resultssupporting

confidence: 62%

Are radial changes in vascular anatomy mechanically induced or an ageing process? Evidence from observations on buttressed tree root systems

Christensen-Dalsgaard

Ennos

Fournier

2008

Trees

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“…The three species showing decreases, on the other hand, are either late-successional (F. grandifolia and T. canadensis) or long-lived trees with some late-successional characteristics (Q. rubra). The link between radial increases and early successional status that has been well-established for tropical trees Williamson 1988, 1989;Omolodun et al 1991;de Castro et al 1993;Butterfield et al 1993;Hernandez and Restrepo 1995;Woodcock et al 2000) thus appears to hold in this temperate-latitude location. These results also point to an association between radial decreases and late-successional status that has not been made previously.…”

Section: Radial Trendsmentioning

confidence: 84%

Wood specific gravity and its radial variations: the many ways to make a tree

Woodcock

Shier

2002

Trees

107

129

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In a study of radial trends in specific gravity of 100 individuals of six mixed-northern-hardwood-forest tree species, three species (Acer rubrum, Pinus strobus, and Betula papyrifera) showed radial increases and three species (Quercus rubrum, Tsuga canadensis, and Fagus grandifolia) radial decreases. Analysis of these data, together with a larger data set including both temperate and tropical tree species, focuses on relationship of radial trends to successional status, variation in inside versus outside wood, and factors affecting degree and direction of radial trend. We propose a model for radial trends in which (1) radial increases associated with low values of specific gravity are an early-successional characteristic and radial decreases associated with high values of specific gravity late successional, (2) the differences in specific gravity and its radial trends reflect growth strategy and biomechanical considerations, and (3) the convergence in values seen in older trees is due to constraints relating to support.

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“…Increases were found in >50% of species in a variety of forest types in Costa Rica (Wiemann & Williamson, 1989a;b). Generally the degree of increase in specific gravity is on the order of .1-.4 (radial increase from inside to out side of tree; Wiemann & Williamson 1988;1989a;Omolodun et al, 1991;Butterfield et al 1993;de Castro et al, 1993;Woodcock et al, 2000). The considerations pertaining to support noted above also suggest that increases in specific gravity are common if not prevalent.…”

Section: Diameter (Cm)mentioning

confidence: 99%

Wood specific gravity of trees and forest types in the southern Peruvian Amazon

Woodcock

2000

Acta Amaz.

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-Estimates of terrestrial biomass depend critically on reliable information about the specific gravity of the wood of forest trees. The study reported on here was carried out in the southern Peruvian Amazon and involved collection of wood samples from trees (70 spp.) in forest with alluvial soil, and sandy-soil forest) had values close to the average reported for the total vegetated area in this part of the Amazon, had values significantly lower (.40). An ameter for a species prevalent in one plot. Increases in specific gravity with tree and forest age may be significant in estimating changes in carbon stores over time. Key-words: wood specific gravity, tropical forest biomass, Southern Peruvian Amazon Densidade Específica da Madeira de Árvores e Tipos de Floresta no Sul da Amazônia PeruanaRESUMO -Estimativas de biomassa em ecossistemas terrestres dependem de informações confiáveis sobre a densidade da madeira das árvores. Neste estudo, realizado no sul da Amazônia peruana, foram coletadas amostras de madeira de árvores (70 spp.) em florestas intactas. Os resultados demonstram a grande variabilidade na densidade específica (peso seco / volume fresco) entre as árvores de um único sítio. Três tipos de floresta (baixio de terraço alto, floresta sobre terraço aluvial alto argiloso, e floresta de terra firme sobre solo arenoso) tiveram valores de densidade específica próximos à média reportada para madeiras de floresta tropical (0,69). Duas florestas em fase sucessional, que constituem até 12% da área vegetada nesta parte da Amazônia, tiveram valores significativamente menores (média de 0,40). Um incremento da densidade específica com a idade da árvore, reportada anteriormente para algumas espécies de árvores de floresta tropical, foi também encontrado para uma espécie avaliada neste estudo, com uma relação positiva entre sua densidade específica e seu diâmetro. Os aumentos de densidade específica com a idade, tanto das espécies como das florestas, podem ser importantes para estimativas de mudanças temporais nos estoques de carbono. Palavras-chave:Densidade específica de madeira, biomassa de floresta tropical, Amazônia peruana

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The Buttressed Blue Marble Tree: Wood and Growth Characteristics of Elaeocarpus angustifolius (Elaeocarpaceae)

Cited by 13 publications

References 22 publications

Are radial changes in vascular anatomy mechanically induced or an ageing process? Evidence from observations on buttressed tree root systems

Are radial changes in vascular anatomy mechanically induced or an ageing process? Evidence from observations on buttressed tree root systems

Wood specific gravity and its radial variations: the many ways to make a tree

Wood specific gravity of trees and forest types in the southern Peruvian Amazon

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