Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Geoffrey M Downes"'
Autor:
David M. Drew, Geoffrey M. Downes
Publikováno v:
Forest Ecosystems, Vol 5, Iss 1, Pp 1-13 (2018)
Abstract Background 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 environmental conditions
Externí odkaz:
https://doaj.org/article/c381ab43ac704809818aa524a6c2c219
Publikováno v:
Current Forestry Reports. 8:317-332
Effects of thinning on the longitudinal and radial variation in wood properties of Eucalyptus nitens
Autor:
Vilius Gendvilas, Mark Neyland, Manuel F Rocha-Sepúlveda, Geoffrey M Downes, Mark Hunt, Andrew Jacobs, Dean Williams, Mario Vega, Julianne O’Reilly-Wapstra
Publikováno v:
Forestry: An International Journal of Forest Research. 95:504-517
Eucalypt plantations in Tasmania have been managed predominantly for fibre production, but there is also growing interest in the production of solid wood products. For solid wood production, stiffness and basic density are key wood properties as they
Publikováno v:
BioResources, Vol 9, Iss 2, Pp 2203-2213 (2014)
Ring width represents the total width of cells in a growing season. Relatively few studies have identified which of the parameters, cell number, size, or wall thickness is the greater contributor to variations in ring width. It is difficult to clearl
Externí odkaz:
https://doaj.org/article/94913e0a389d42a698cdd790f051bfd5
Publikováno v:
New Zealand Journal of Forestry Science. 52
Background: Resin pockets and blemishes in pruned logs of radiata pine (Pinus radiata D.Don) can reduce the value of clear and moulding grades of lumber. External resin features (ERF) on the bark of the logs have proved an effective method of predict
Autor:
Mark G. Neyland, Geoffrey M. Downes, Mark A. Hunt, Julianne M. O’Reilly-Wapstra, Andrew Jacobs, Vilius Gendvilas
Publikováno v:
Holzforschung. 75:508-516
Basic density is a fundamental wood property of pulp and sawn wood. An IML Resi PD 400 drilling resistance tool (IML System GmbH, Wiesloch, Germany) was used to evaluate the basic density of Eucalyptus nitens discs and the impact of needle friction o
Autor:
Geoffrey M. Downes, Jonathan J. Harrington, David M. Drew, Marco Lausberg, Phillip Muyambo, Duncan Watt, David J. Lee
Publikováno v:
Forests; Volume 13; Issue 5; Pages: 751
Mature age Pinus radiata D. Don trees were sampled across nine sites in northern New South Wales, Australia, that were expected, based on site quality and inventory metrics, to exhibit significant variation in productivity and wood quality. Twenty tr
Publikováno v:
Dendrochronologia. 72:125933
Publikováno v:
Australian Forestry. 80:242-254
While focus is often placed on possible reductions in forest growth and timber volume yield under different future climates, less attention is paid to changes in wood properties, such as wood density. In this paper we explore the literature on climat
Publikováno v:
Wood Science and Technology. 49:1307-1318
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 SilviScan-3 on dated Picea crassifolia t