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  1. No Access

    Article

    A Review of Progress and Applications in Wood Quality Modelling

    Producing wood of the right quality is an important part of forest management. In the same way that forest growth models are valuable decision support tools for producing desired yields, models that predict wo...

    David M. Drew, Geoffrey M. Downes, Thomas Seifert in Current Forestry Reports (2022)

  2. Article

    Open Access

    Growth at the microscale: long term thinning effects on patterns and timing of intra-annual stem increment in radiata pine

    Stem radial growth in forests is not uniform. Rather, it is characterized by periods of relatively fast or slow growth, or sometimes no growth at all. These fluctuations are generally a function of varying env...

    David M. Drew, Geoffrey M. Downes in Forest Ecosystems (2018)

  3. Article

    Independent lines of evidence of a genetic relationship between acoustic wave velocity and kraft pulp yield in Eucalyptus globulus

    Multiple lines of evidence suggest acoustic wave velocity (AWV) would provide a rapid and efficient method to indirectly select for superior pulp yield in Eucalyptus globulus ...

    Matthew G. Hamilton, Jules S. Freeman, David P. Blackburn in Annals of Forest Science (2017)

  4. No Access

    Article

    Climatic signal in cellulose microfibril angle and tracheid radial diameter of Picea crassifolia at different altitudes of the Tibetan plateau, northwest China

    Little attention was given to the climatic signals in wood properties, such as microfibril angle (MFA) and tracheid radial diameter (TRD). In this article, year-to-year variation in MFA and TRD was measured by...

    **mei Xu, Jianxiong Lu, Robert Evans, Geoffrey M. Downes in Wood Science and Technology (2015)

  5. No Access

    Article

    NIR detection of non-recoverable collapse in sawn boards of Eucalyptus globulus

    NIR predictions of cellulose content and stiffness (modulus of elasticity, MOE) from spectra collected from the radial longitudinal surface of Eucalyptus globulus wood were found to be reliable indicators of zone...

    Geoffrey M. Downes, Manuel Touza in European Journal of Wood and Wood Products (2014)

  6. No Access

    Article

    The influence of stem guying on radial growth, stem form and internal resin features in radiata pine

    Stem guying to prevent wind-induced swaying of radiata pine trees resulted in significant changes in radial growth, but did not affect the frequency of compression wood or resin features. ...

    John R. Moore, David J. Cown, John R. Lee, Russell B. McKinley, Rod K. Brownlie in Trees (2014)

  7. No Access

    Article

    The number of days on which increment occurs is the primary determinant of annual ring width in Callitris intratropica

    The number of days on which a measureable increment occurred, and the average rate of stem growth, rather than the overall duration of the wet season, were the main determinants of ring width i...

    David M. Drew, Anna E. Richards, Garry D. Cook, Geoffrey M. Downes, Warwick Gill in Trees (2014)

  8. No Access

    Article

    Prediction of non-recoverable collapse in Eucalyptus globulus from near infrared scanning of radial wood samples

    Near infrared (NIR) spectroscopy calibrations was used to predict radial profiles of cellulose content, wood density, cellulose microfibril angle (MFA) and modulus of elasticity (MOE) in 20-year-old plantation Eu...

    Maximilian Wentzel-Vietheer, Russell Washusen in European Journal of Wood and Wood Products (2013)

  9. Article

    Open Access

    Effect of stem bending and soil moisture on the incidence of resin pockets in radiata pine

    Mechanical bending stress due to tree sway in strong winds and water stress during drought are thought to contribute to the formation of resin pockets, but it is unclear if these are linked and whether the ini...

    Trevor G Jones, Geoffrey M Downes in New Zealand Journal of Forestry Science (2013)

  10. No Access

    Article

    Short-term growth responses and associated wood density fluctuations in variously irrigated Eucalyptus globulus

    Cambial growth and wood properties respond to fluctuating environmental conditions. Understanding the nature of these responses is crucial to understanding their cumulative effect on the wood quality character...

    David M. Drew, Geoffrey M. Downes, Robert Evans in Trees (2011)

  11. No Access

    Article

    Differences in daily stem size variation and growth in two hybrid eucalypt clones

    Understanding daily stem size variation is important as the net increment of a forest stand is ultimately determined by the accumulation of daily increment events. In this study, measurements of stem size at h...

    David Michael Drew, Geoffrey M. Downes, Valerie Grzeskowiak, Thimagren Naidoo in Trees (2009)

  12. No Access

    Article

    High resolution temporal variation in wood properties in irrigated and nonirrigated Eucalyptus globulus

  13. • Environmental determinants of wood properties variation were examined in Eucalyptus globulus, a globally important hardwood plantation species, in southe...

  14. David M. Drew, Geoffrey M. Downes, Anthony P. O’Grady in Annals of Forest Science (2009)

  15. No Access

    Article

    Wood properties of juvenile Pinus radiata growing in the presence and absence of competing understorey vegetation at a dryland site

    Pinus radiata D. Don trees were grown in the presence and absence of the woody weed broom (Cytisus scoparius L.) on a dryland site for 2 years to determine the effects of competition from weeds on wood properties...

    Michael S. Watt, Geoffrey M. Downes, David Whitehead, Euan G. Mason in Trees (2005)

  16. No Access

    Article

    Strength and structure of stems from fast grown Pinus radiata

    Segments of living stems from 2-year-old, fast growing Pinus radiata, established on a fertile ex-pasture, were examined in terms of their bending strength parallel to the grain. Stem anatomical and structural va...

    Geoffrey M. Downes, Erwin P. J. Beckers, Nigel D. Turvey, Hans Porada in Trees (1993)

  17. No Access

    Article

    Relationships between stem structure and bending strength in Pinus radiata seedlings

    Seedlings from nine families of Pinus radiata were grown in a glasshouse under conditions of high and low nitrate nitrogen availability to investigate effects on anatomical and strength characteristics of stems. ...

    Geoffrey M. Downes, Nigel D. Turvey in Trees (1993)

  18. No Access

    Article

    Effects of micronutrients on the growth form of two families of Pinus radiata (D.Don) seedlings

    Micro-element deficiencies have been implicated in the development of poor stem form in Pinus radiata plantations. Cu, Mn and B have been implicated in previous studies as influencing tree form and/or the process...

    Nigel D. Turvey, Clive Carlyle, Geoffrey M. Downes in Plant and Soil (1992)