Crossdating and analysis of eucalypt tree rings exhibiting terminal and reverse latewood

Brookhouse, Matthew; Brack, Cristopher

doi:10.1007/s00468-006-0092-0

Cited by 16 publications

(16 citation statements)

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“…Consistent with previous studies in Central Gippsland and the Black Range (Brookhouse and Brack 2006), all samples exhibited reverse latewood tree-ring structure. Following identification, intra-and inter-sample visual cross-dating and sample measurement were undertaken as described by Brookhouse and Brack (2006). Samples on which only one radius had been measured were excluded from analysis.…”

Section: Tree-ring Identification Measurement and Standardizationsupporting

confidence: 91%

“…Black were also sampled near the Noojee township. The formation of annual tree rings in each of the sampling regions has been confirmed (Incoll 1974;Brookhouse and Brack 2006).…”

Section: Sample Site and Speciesmentioning

confidence: 99%

“…The effects of age and sample position are investigated, as these factors are known to significantly affect the sensitivity of radial growth to extrinsic forcing in other genera (e.g., Fritts et al 1965;Le Blanc et al 1987). We also examine the effect of radial azimuth to investigate azimuth-dependent cross-dating success observed by Brookhouse and Brack (2006). Mean ring width varies with age and sample position (e.g., Shea and Armson 1972;Le Blanc 1990) and may affect the amplitude of high-frequency variance in eucalypts (Banks 1982(Banks , 1993.…”

Section: Introductionmentioning

confidence: 98%

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The effect of age and sample position on eucalypt tree-ring width series

Brookhouse

Brack

2008

Can. J. For. Res.

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In this study, we examine within-tree variance in proportionate tree-ring width (p rw ) and correlation between radii (r wt ), samples (r bh ), and trees (r bt ) in four eucalypt species common throughout eastern Victoria, Australia. In all species and sites studied, rwt and rbh differ significantly between cambial-age and sample-height classes. Differences between rwt and rbh are nonsignificant between tree-age or radial-azimuth classes. Significant differences in prw exist between cambial-age, tree-age, and sample-height classes and between radii on different compass bearings. Whilst differences in rwt and rbh between cambial-age classes appears to be the result of variation in mechanical demands with increasing stem size, stem deformation may account for differences between sample-height classes. Variation in prw appears to be due to stem geometry, stem eccentricities associated with root buttressing, and tree-age dependent variation in the rate of radial growth. No significant differences in rbt exist between sample-height classes. Analysis of the expressed population signal statistic indicates that site-level and species differences are far more significant than sample position on variance within tree-ring width series collected from eucalypts. We discuss the implications of the current work for eucalypt dendroclimatology.Résumé : Dans cette étude, nous avons examiné la variance intra-arbre de la largeur proportionnelle des cernes annuels (p rw ) et les corrélations entre les rayons (r wt ), les échantillons (r bh ) et les arbres (r bt ) chez quatre espèces d'eucalyptus communes dans la partie est de la région de Victoria, en Australie. Chez toutes les espèces et dans tous les sites étudiés, r wt et r bh diffèrent significativement entre les classes d'âge cambial et de hauteur des échantillons. Par contre, r wt et r bh ne diffèr-ent pas significativement entre les classes d'âge des arbres et d'azimut des rayons. Des différences significatives existent dans le cas de p rw entre les classes d'âge cambial, d'âge des arbres et de hauteur des échantillons ainsi qu'entre les rayons correspondant à différentes orientations. Alors que les différences de r wt et r bh entre les classes d'âge cambial semblent causées par la variation du stress mécanique avec l'augmentation de la taille de l'arbre, la déformation de la tige peut expliquer les différences entre les classes de hauteur des échantillons. La variation de p rw semble causée par la géométrie de la tige, par les excentricités de la tige associées à la formation de contreforts à la base du tronc et par la variation du taux de croissance radiale qui dépend de l'âge des arbres. Dans le cas de r bt , il n'y a aucune différence significative entre les classes de hauteur des échantillons. L'analyse de la statistique du signal exprimé par la population indique que les effets du site et de l'espèce sont de loin plus importants que celui de la position de l'échantillon sur la variance intra-arbre des séries de largeur des cernes annuels collectées sur les eucalyptus. No...

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Section: Tree-ring Identification Measurement and Standardizationsupporting

confidence: 91%

“…Black were also sampled near the Noojee township. The formation of annual tree rings in each of the sampling regions has been confirmed (Incoll 1974;Brookhouse and Brack 2006).…”

Section: Sample Site and Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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The effect of age and sample position on eucalypt tree-ring width series

Brookhouse

Brack

2008

Can. J. For. Res.

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“…The species therefore has the potential to provide palaeoclimatic information that may be of use in hydrological and geomorphological studies. However, these studies have largely been conducted in Australia, primarily focused on the stem, concentrating on anatomical characteristics (Veenin et al, 2005;Moglia et al, 2008) and crossdating of tree rings (Brookhouse, 2006;Brookhouse and Brack, 2006).…”

Section: Discussionmentioning

confidence: 99%

Response of anatomical structures in tree roots to an erosion event on the southeastern Tibetan Plateau

2014

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“…Although it has been a common opinion that eucalypts show little promise for dendroecological studies (Ogden 1978;Dunwiddie and LaMarche 1980;Hughes et a/. 1982;Schweingruber 1992), there is evidence that they have some limited value in reconstructing past climates (Brookhouse and Brack 2006), and can be very useful for developing an understanding of regeneration and fire history (Banks 1982;Bowman and Kirkpatrick 1984;Rayner 1992;Pulsford eta/. 1993;Banks 1993;Woodgate eta/.…”

Section: Introductionmentioning

confidence: 98%

Fire frequency variation in south-eastern Tasmanian dry eucalypt forest 1740–2004 from fire scars

Platen

Kirkpatrick

Allen

2011

Australian Forestry

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An understanding of fire history is important in determining appropriate fire management regimes for biodiversity conservation in fire-prone ecosystems, such as the dry eucalypt forests of temperate Australia. We tested whether ring counts and evidence of fire in the stumps of felled eucalypts could be used to construct fire chronologies in the dry forests of south-eastern Tasmania. Given that the dates of fires derived from this method were consistent with other evidence of fire years, we constructed chronologies for 13 sites in the region. We applied a conversion factor for fires per decade per site based on the relationship between fire detection and sample size for all sites. Between 17 40 and 1819 when indigenous people were managing the region, decadal fire frequency averaged 0. 7. Between 1820 and 1849 fires were very infrequent in the region, with a mean decadal fire frequency of 0.4. An upward transition to a higher fire frequency took place between the 1840s and 1850s. Between 1850 and 1909 decadal fire frequency varied between 0.8 and 1.2 then sharply increased again. Between 1910 and 1989 it varied between 1.3 and 1.7. Extensive fire years were strongly related to annual precipitation <0.75 standard deviations below the mean. Variation in annual precipitation, however, could not explain the sharp transitions in decadal fire frequency that took place in 1820, 1850, 191 0 and 1990 and the constancy of fire frequency between these dates. The relationships of these transitions to land use changes are described.

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Crossdating and analysis of eucalypt tree rings exhibiting terminal and reverse latewood

Cited by 16 publications

References 84 publications

The effect of age and sample position on eucalypt tree-ring width series

The effect of age and sample position on eucalypt tree-ring width series

Response of anatomical structures in tree roots to an erosion event on the southeastern Tibetan Plateau

Fire frequency variation in south-eastern Tasmanian dry eucalypt forest 1740–2004 from fire scars

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