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Final deadline for early registration for the International Arboriculture Summit - Hong Kong (IASHK) is November 8.

International Arboriculture Summit – Hong Kong

Final deadline for early registration for the International Arboriculture Summit – Hong Kong (IASHK) is November 8. 

The final date of registration is November 15, after this date, all registrations will be considered “Walk-in.” Presentation handouts are not guaranteed for walk-in registrations. They will be issued on a first come, first serve basis. No T-shirts will be included for any registrations after November 8th.

Speakers include the following:

John Ho works for CLP in Hong Kong as a Vegetation Manager. He is one of the pioneers in Hong Kong to apply practical arboriculture techniques to the utility business since 2001. He holds a degree in Electrical Engineering. John received the Hong Kong Earch Champions Award in 2009 on Integrated Vegetation Management program and is also the Hong Kong representative to the Utility Arborist Association. He is also a member of the Hong Kong Tree Expert Panel and is currently serving as the Chair of the ISA Hong Kong Chapter Steering Committee.


Dr. Ji-Dong Gu is currently an associate professor of the School of Biological Sciences, The University of Hong Kong. His major research foci are in the areas of environmental microbiology and toxicology and he has published more than 170 journal papers, 32 book chapters, co-edited a book with Ralph Mitchell on Environmental Microbiology (2nd ed, John Wiley-Blackwell. 2010), wrote a book on Biosusceptibility of Polymers and Fiber-reinforced Composites and Testing Methods (Springer, 2013). He serves as editor/associate editor for international journals including International Biodeterioration & Biodegradation, International Journal of Environmental International Journal of Environmental Science and Technology, Environmental Geochemistry and Health, Frontier in Microbiotechnology, Microbial Ecotoxicology and Bioremediation, and Ecotoxicology.


Matthew Pryor BA (Hons); CMLI; RLA; HKILA; CA; is Head of the Division of Landscape Architecture, at The University of Hong Kong, and teaches planting design, landscape construction technology and professional practice.  He is an ISA Certified Arborist and a Registered Landscape Architect with more than 20 years of specialist landscape construction experience in Hong Kong and SE Asia.  His work has included numerous tree surveys and assessments; the supervision of numerous tree transplanting and tree protection operations; planting field trials, and very large scale planting and ecological remediation schemes.  He is currently undertaking research into the protection and transplanting of mature trees on construction sites, and the effectiveness of tree transplanting as an environmental mitigation measure in Hong Kong.


Sammy Au is in the third generation of the family plant nursery business & is the first local Certified Arborist, Certified Tree Worker,  Board Certified Master Arborist & Registered Consulting Arborist in HK & China.  He is the President (Station Manager) of ISA HK/China since its inauguration in 2004.  He has started his own Palm & Tree Nursery in China since 1993, & is the first person in China to promote proper international tree care since then.  He now runs his own arboricultural consultancy in HK & China, and is actively involved with training the next generation of arborists in the Far East. Sammy also has worked closely with Don Picker and many others over the years since 2004 to exert a united effort in promoting modern arboriculture in Hong Kong.


Ryan Lewis is an ISA Board Certified Master Arborist/Municipal Specialist, Certified Tree Worker/Climber Specialist, and Certified Tree Risk Assessor.  Ryan has a degree in History from Kent State University in Kent, Ohio.  Accustomed to cold winters and trees in the temperate zone, Ryan has recently relocated to Hong Kong, along with his wife Heather and two young sons.  Before starting work for Asia Tree Preservation, Ryan worked in private sector tree care, and spent the previous 6 years as lead arborist and Municipal Specialist on the forestry crew for the City of Shaker Heights, a suburb of Cleveland, Ohio.  The Lewis family has been enjoying the amazing trees and the wonderful hiking in the Hong Kong area and intends to remain in HK for a long time to come…

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