Research/Scholarly/Creative Works

Authored Books

• Walker JCF. (2006) Primary Wood Processing. (2nd ed.). Dordrecht: Springer. 596pp. http://dx.doi.org/10.1007/1-4020-4393-7.

• Keey RB., Langrish TAG. and Walker JCF. (2000) Kiln-Drying of Lumber. New York: Springer-Verlag. 326.

Edited Volumes

• Walker JCF. (2011) Developing a eucalypt resource: Learning from Australia and elsewhere. Christchurch: Wood Technology Research Centre. 158pp.

• Apiolaza LA., Chauhan SVS. and Walker JCF. (2009) Revisiting Eucalypts 2009: Workshop Proceedings. Christchurch: Wood Technology Research Centre. 155pp.

• Entwistle K., Harris P. and Walker JCF. (2007) The Compromised Wood Workshop 2007. Christchurch: Wood Technology Research Centre. 236pp.

• Entwistle KM. and Walker JCF. (2005) The Hemicelluloses Workshop 2005. Christchurch: University of Canterbury. 186.

Journal Articles

• Dubey MK., Pang S., Chauhan S. and Walker J. (2016) Dimensional stability, fungal resistance and mechanical properties of radiata pine after combined thermo-mechanical compression and oil heat-treatment. Holzforschung 70(8) http://dx.doi.org/10.1515/hf-2015-0174.

• Chauhan SS., Sharma M., Thomas J., Apiolaza LA., Collings DA. and Walker JCF. (2013) Methods for the very early selection of Pinus radiata D. Don. for solid wood products. Annals of Forest Science 70: 439-449. http://dx.doi.org/10.1007/s13595-013-0270-3.

• Walker J. (2013) Wood quality: a perspective from New Zealand. Forests 4(2): 234-250. http://dx.doi.org/10.3390/f4020234.

• Dubey MK., Pang S. and Walker J. (2012) Changes in chemistry, color, dimensional stability and fungal resistance of Pinus radiata D. Don wood with oil heat-treatment. Holzforschung 66(1): 49-57. http://dx.doi.org/10.1515/HF.2011.117.

• Dubey MK., Pang S. and Walker JFC. (2012) Oil uptake by wood during heat-treatment and post-treatment cooling, and effects on wood dimensional stability. European Journal of Wood and Wood Products 70(1-3): 183-190. http://dx.doi.org/10.1007/s00107-011-0535-1.

• Apiolaza LA., Butterfield BG., Chauhan SS. and Walker JCF. (2011) Characterization of mechanically perturbed young stems: can it be used for wood quality screening? Annals of Forest Science 68(2): 407-414. http://dx.doi.org/10.1007/s13595-011-0028-8.

• Apiolaza LA., Chauhan SS. and Walker JCF. (2011) Genetic control of very early compression and opposite wood in Pinus radiata and its implications for selection. Tree Genetics & Genomes 7(3): 563-571. http://dx.doi.org/10.1007/s11295-010-0356-0.

• Chauhan SS. and Walker JCF. (2011) Wood quality in artificially inclined 1-year-old trees of Eucalyptus regnans - differences in tension and opposite wood properties. Canadian Journal of Forest Research 41(5): 930-937. http://dx.doi.org/10.1139/x11-016.

• Dubey MK., Pang S. and Walker J. (2011) Effect of oil heating age on colour and dimensional stability of heat treated Pinus radiata. European Journal of Wood and Wood Products 69(2): 255-262. http://dx.doi.org/10.1007/s00107-010-0431-0.

• Moreno Chan J., Walker JCF. and Raymond CA. (2011) Effects of moisture content and temperature on acoustic velocity and dynamic MOE of radiata pine sapwood boards. Wood Science and Technology 45(4): 609-626. http://dx.doi.org/10.1007/s00226-010-0350-6.

• Chan JM., Raymond CA. and Walker JC. (2010) Non-destructive assessment of green density and moisture condition in plantation-grown radiata pine (Pinus radiata D. Don.) by increment core measurements. Holzforschung 64(4): 521-528. http://dx.doi.org/10.1515/HF.2010.067.

• Dubey M., Pang S. and Walker J. (2010) Color and Dimensional Stability of Oil Heat-treated Radiata Pinewood after Accelerated UV Weathering. Forest Products Journal 60(5): 453-459.

• Walker JCF. (2010) Breeding - getting the most from radiata pine. New Zealand Tree Grower 31(2): 13-14.

• Warren E., Smith RGB., Apiolaza LA. and Walker JCF. (2009) Effect of stocking on juvenile wood stiffness for three Eucalyptus species. New Forests 37(3): 241-250. http://dx.doi.org/10.1007/s11056-008-9120-9.

• Walker JCF. (2008) New Zealand forestry: a visit to a Gypsy fortune-teller's colourful caravan. New Zealand Journal of Forestry 53(2): 35-42.

• Chauhan SS., Entwistle KM. and Walker JCF. (2007) Search for a relationship between stress wave velocity and internal stresses in eucalypts and radiata pine. Holzforschung 61(1): 60-64. http://dx.doi.org/10.1515/HF.2007.010.

• Walker J. (2007) Clausewitz on Forestry. New Zealand Journal of Forestry 51(4): 34-37.

• Walker JCF. (2007) Supply-side inflation in commodities, producer pricing power, and forestry. New Zealand Journal of Forestry 52(2): 36-40.

• Bachle H. and Walker JCF. (2006) The influence of temperature on the velocity of sound in green pine wood. European Journal of Wood and Wood Products 64(5): 429-430. http://dx.doi.org/10.1007/s00107-005-0083-7.

• Bascunan A., Moore JR. and Walker JCF. (2006) Variations in the dynamic modulus of elasticity with proximity to the stand edge in radiata pine stands on the Canterbury Plains, New Zealand. New Zealand Journal of Forestry 51(3): 4-8.

• Carter P., Chauhan SS. and Walker JCF. (2006) Sorting logs and lumber for stiffness using Director HM200. Wood and Fiber Science 38(1): 49-54.

• Chauhan SS. and Walker JCF. (2006) Variations in acoustic velocity and density with age, and their interrelationships in radiata pine. Forest Ecology and Management 229(1-3): 388-394. http://dx.doi.org/10.1016/j.foreco.2006.04.019.

• Grabianowski M., Manley B. and Walker JCF. (2006) Acoustic measurements on standing trees, logs and green lumber. Wood Science and Technology 40(3): 205-216. http://dx.doi.org/10.1007/s00226-005-0038-5.

• Hsu LCY., Walker JCF., Butterfield BG. and Jackson SL. (2006) Compression wood does not form in the roots of Pinus radiata. IAWA Journal 27(1): 45-54.

• Bachle H. and Walker JCF. (2005) Influence of temperature on the velocity of sound in green radiata pine logs. Holz als Roh- und Werkstoff.

• Bradley A., Chauhan SS., Walker JCF. and Banham P. (2005) Using acoustics in log segregation to optimise energy use in thermomechanical pulping. Appita Journal 58(4): 306-311.

• Chauhan SS., Entwhistle K. and Walker JCF. (2005) Differences in acoustic velocity by resonance and transit-time methods in an anisotropic laminated medium. Holzforschung 59(4): 428-434.

• Burdon RD., Kibblewhite RP., Walker JCF., Mcgraw RA., Evans R. and Cown DJ. (2004) Juvenile versus mature wood: a new concept, orthogonal to corewood versus outerwood, with special reference to Pinus radiata and P. taeda. Forest Science 50(4): 399-415.

• Burdon RD., Walker JCF., Mcgraw RA., Evans R. and Cown DJ. (2004) Juvenile wood (sensu novo) in pines: conflicts and possible opportunities for growing, processing and utilization. New Zealand Journal of Forestry 49(3): 24-31.

• Chauhan SS. and Walker JCF. (2004) Relationships between longitudinal growth strain and some wood properties in Eucalyptus nitens. Australian Journal of Forestry 67(4): 254-260.

• Grabianowski M., Manley B. and Walker JCF. (2004) Impact of stocking and exposure on outerwood acoustic properties of Pinus radiata in Eyrewell Forest. New Zealand Journal of Forestry 49(2): 13-17.

• Walker JCF. (2004) Forestry: a Turning Tide. New Zealand Forest Industries 35(9): 33-34.

• Walker JCF. (2004) Good wood and blind prejudice. New Zealand Journal of Forestry 49(2): 36-37.

• Xu P. and Walker JCF. (2004) Stiffness gradients in radiata pine trees. Wood Science and Technology 38(1): 1-9.

• Xu P., Donaldson L., Walker JCF., Evans R. and Downes G. (2004) Effects of density and microfibril orientation on the vertical variation of low-stiffness wood in radiata pine butt logs. Holzforschung 58: 673-677.

• Andrews M., Lausberg M., Nakada R. and Walker JCF. (2003) Singing softwoods: sorting logs with sonics. Scottish Forestry 57(4): 199-202.

• Walker JCF. (2003) Finding a brighter future - in commodities. New Zealand Journal of Forestry 48(2): 29-31.

• Albert DJ., Clark TA., Dickson RL. and Walker JCF. (2002) Using acoustics to sort radiata pine pulp logs according to fibre characteristics and paper properties. International Forestry Review 4(1): 12-19.

• Xu P., Buchanan AH. and Walker JCF. (2002) Estimating Tensile Strength in Pinus Radiata Structural Timber. New Zealand Journal of Forestry Science 32(1): 70-85.

• Addis T., Buchanan AH. and Walker JCF. (2000) Selecting trees for structural timber. Holz roh- als Werkstoff (European Journal of Wood and Wood Products) 58(3): 162-167.

• Tsehaye A., Buchanan AH. and Walker JCF. (2000) Sorting of boxed-pith lumber for stiffness. Journal of the Institute of Wood Science 15(3): 130-133.

• Tsehaye A., Buchanan AH. and Walker JCF. (2000) Sorting of logs using acoustics. Journal of Wood Science & Technology 34(4): 337-344.

• Walker J. (2000) Dream merchants: why forestry practices will change. NZ Journal of Forestry 45(3): 27-33.

• Jones TG. and Walker JCF. (1999) Decompression drying of Pinus radiata sapwood chips. Forest Products Journal 49(1): 67-72.

• Walker JCF. and Nakada R. (1999) Understanding corewood in some softwoods: a selective review. International Forestry Review (formerly Commonwealth Forestry Review) 4(1): 251-259.

• Walker J. (1998) Corewood: docking the dog's tail. Part 1, an alternative road map. New Zealand Forestry 42(4): 5-6.

• Walker J. (1998) Corewood: docking the dog's tail. Part 2, the need to particularise. N.Z. Forestry 42(5): 4-6.

• Chen G., Keey RB. and Walker JCF. (1997) Stress relief for sapwood Pinus radiata boards by cooling and steam-conditioning process. Holz als Roh-und Werkstoff 55: 351-360.

• Chen G., Keey RB. and Walker JCF. (1997) The drying stress and check development on high-temperature kiln seasoning of sapwood Pinus radiata boards: Moisture movement and strain model. Holz als Roh-und Werkstoff 55: 59-64.

• Chen G., Keey RB. and Walker JCF. (1997) The drying stress and check development on high-temperature kiln seasoning of sapwood Pinus radiata boards: Stress development. Holz als Roh-und Werkstoff 55: 65-70.

• Dickson RL. and Walker JCF. (1997) Growing Commodities or designer trees. Commonwealth Forestry Review 76(4): 273-279.

• Evans JM., Keey RB., Walker JCF. and Burton RJ. (1997) The modelling of the vapour boron treatment of Pinus radiata D. Don Part 1: model development. Holz als Roh-und Werkstoff 55(2): 1-5.

• Evans JM., Keey RB., Walker JCF. and Burton RJ. (1997) The modelling of the vapour boron treatment of Pinus radiata D. Don Part 2: model verification. Holz als Roh-und Werkstoff 55(3): 169-173.

• Tsehaye A., Buchanan AH. and Walker JCF. (1997) Characteristic design stresses in tension for radiata pine grown in Canterbury. Journal of the Institute of Wood Science, UK 14(3): 107-114.

• Tsehaye A., Buchanan AH. and Walker JCF. (1997) Log segregation into stiffness classes. Managing Variability in Resource Quality, FRI Bulletin 202. : 7-10.

• Walker J. (1997) Forestry in the age of Methuselah. New Zealand Journal of Forestry 41(4): 5-7.

Conference Contributions - Other

• Apiolaza LA., Evison DC., Hayes MP. and Walker JCF. (2012) Small (and quick) is beautiful: understanding and exploiting genetic variation of wood quality in corewood. Estoril, Portugal: IUFRO Conference Division 5 Forest Products, 8-13 Jul 2012.

• Dubey MK., Pang S. and Walker J. (2009) Effect of Oil Heating Age on Color and Stability of Heat Treated Wood. Boise, ID, USA: Forest Products Society (FPS) 63rd International Conference, 21-23 Jun 2009.

• Walker JCF. (2008) New Zealand forestry: a random walk in the dark. University of Canterbury, Christchurch, New Zealand: Wood Technology Research Centre Workshop, 14-14 Feb 2008.

• Walker J. (2007) You cannot grow quality softwood lumber as quickly as you can grow quality hardwood lumber. Charles Sturt University, Bathurst, Australia: The Plantation Futures Forum, 20-20 Mar 2007.

• Walker JCF. (2007) Is the demand for solid wood as safe as houses? Bathurst, NSW: The Plantation Futures Forum - will tomorrow be a repeat of today, 20-20 Mar 2007.

• Dickson R., Raymond C., Watt D., Joe W., Moreno J. and Walker J. (2006) A wood quality campaign to realise the real value of Australian-grown radiata pine. Christchurch, New Zealand: Strategies for growing high wood quality trees and processing and utilization of wood products, 2-2 Feb 2006.

• Dickson R., Raymond C., Watt D., Joe W., Moreno J. and Walker J. (2006) A Wood Quality Measurement Campaign to Realise the Real Value of Australian-grown Radiata Pine. Wood Technology Research Centre Workshop, University of Canterbury, Christchurch, New Zealand: Workshop on Strategies for Growing High Wood Quality Trees, and Processing and Utilisation of Wood Products, 2-2 Feb 2006.

• Walker J. (2006) Pine in perspective. Wood Technology Research Centre Workshop, University of Canterbury, Christchurch, New Zealand: Workshop on Strategies for Growing High Wood Quality Trees, and Processing and Utilisation of Wood Products, 2-2 Feb 2006.

• Walker JCF. (2006) Calidad de madera de Pino radiata. Lo que es bueno para el arbol, no siempre es bueno para la industria. Concepcion, Chile: Silvotechna XXI, 17-17 Nov 2006.

• Walker JCF. (2006) Pine in perspective. Christchurch, New Zealand: Wood Technology Research Centre, 2-2 Feb 2007.

• Walker JCF. (2006) Segregacion - opportunidades y desafios actuales. Concepcion, Chile: Silvotechna XXI, 1-1 Nov 2006.

• Walker JCF. (2001) Finding a Future in Wood Quality. Rotorua, New Zealand: 4th Wood Quality Workshop: tools and technologies to improve log and wood products segregation, 29 Oct 2001.

• Buchanan AH., Nakada R. and Walker JCF. (1999) Log segregation by stiffness class. Rotorua & Melbourne: 3rd. Wood Quality Symposium: Emerging Technologies for Wood Processing, 1 Jan 1999.

• Nakada R., Buchanan AH. and Walker JCF. (1999) Measuring wood quality: the need for market pull not resource shove. Rotorua & Melbourne: 3rd. Wood Quality Symposium: Emerging Technologies for Wood Processing, 1 Jan 1999.

• Tsehaye A., Buchanan AH., Cha JK. and Walker JCF. (1999) Ratio of tensile to bending strength for radiata pine. Rotorua, New Zealand: Proceedings, PTEC'99 Pacific Timber Engineering Conference, 1 Jan 1999.

• Xu P., Nakada R. and Walker JCF. (1999) Optimising your processing: the right wood for the right technology.. Rotorua & Melbourne: 3rd Wood Quality Symposium: emerging technologies for wood processing, 1 Jan 1999.

• Tsehaye A., Buchanan AH., Meder R., Newman RH. and Walker JCF. (1998) Microfibril angle: determining wood stiffness in radiata pine. Christchurch, New Zealand: Proceedings of the IAWA/IUFRO International Workshop on the Microfibril Angle in Wood, 1 Jan 1998.

• Walker J. and Woollons R. (1998) Cell wall organisation and the properties of xylem - a speculative review. Christchurch, New Zealand: Proceedings of the IAWA/IUFRO International Workshop on the Microfibril angle in wood, 1 Jan 1998.

• Dickson RL. and Walker JCF. (1997) Selecting wood quality characteristics for pines. Quebec City, Canada: CTIA/IVFRO International Wood Quality Workshop Timber Management toward wood quality and end product value (Vol. 4), 18 Aug 1997.

Conference Contributions - Published

• Apiolaza L., Mason E., McConnochie R., Millen P., van Ballekom S. and Walker J. (2011) New Zealand Dryland Forests Initiative: Learning from Others. In : 147-158.

• Apiolaza L., McConnochie R., Millen P., van Ballekom S. and Walker J. (2011) Introducing durable species in New Zealand drylands: genetics of early adaptation of Eucalyptus bosistoana. In Proceedings: 137-145.

• Apiolaza LA., Chauhan S. and Walker JCF. (2009) Revisiting eucalypts - a strategic assessment. In Revisiting Eucalypts 2009: 149-155.

• Apiolaza LA., Walker JCF., Nair H. and Butterfield BG. (2008) Very early screening of wood quality for radiata pine: pushing the envelope. In Proceedings of the 51st International Convention of Society of Wood Science and Technology.

• Entwistle KM. and Walker JCF. (2005) Workshop Assessment. In : 179-186.

• Cascunan A., Moore J. and Walker J. (2004) Real influences of wind and drought on wood quality. In : 1-8.

• Moreno J. and Walker J. (2004) Wood quality in radiata pine plantations. Why corewood? Why microfibril angle? Effects on stiffness, shrinkage and warp. In : 1-7.

• Walker J. (2000) Wood quality: the challenge for kiln operators. In : 9-18.

• Xu P. and Walker JCF. (2000) Wood quality gradients in trees. In : 29-37.

Reports

• Walker JCF. (2011) Expert's Report for IAMA Arbitration between Carter Holt Harvey Wood Products (Central & Northern Regions) Pty Ltd and Forests NSW.University of Canterbury. 35pp.

• Nair H., Butterfield B., Apiolaza L. and Walker J. (2008) Measurement of Ethylene and Biogenic Volatile Organic Compound Emissions from Pinus Radiata Seedlings.Commissioned by Wood Quality Limited (WQI) Ltd. 16pp.

• Chauhan SS. and Walker JCF. (2004) Associations between acoustic velocity, MOE and wood density (#STA1).WQI Limited - FRST Consortium. 1-32.

• Andrews M., Ilic J. and Walker JCF. (2003) Acoustic resonance technique for sorting logs, boards and standing trees.WQI Limited - FRST Consortium. 1-54.

Additional Publications

• Walker JCF. (2006) Calidad de madera de Pino radiata. Lo que es bueno para el árbol, no sempre es bueno para la industria. Universidad Austral de Chile, Valdivia, Chile: [Workshop].

• Walker J. (2002) Method of selecting wood for chemical pulping.Patent No. 6822183.

• Walker JCF. (2002) Method of selecting wood for mechanical pulping.Patent No. PCT/NZ02/00014.

• Walker J. (2001) Method of selecting and/or processing wood according to its fibre characteristics.Patent No. 09/763511.

Research Groups