Your internet browser is not using current security protocols.
This will soon affect your ability to use the ISA website.
To update your security protocols, turn on TLS 1.2 in Advanced settings or contact your system administrator.
ISA Logo
About ISA  •  Find an Arborist  •  Newsroom  •  Job Bank  •  Contact Us  •  LOGIN
Join ISA

Subscribe to this podcast.


Why Trees Fall Down

Karl Niklas discusses the biomechanics behind tree failures and how different factors affect tree or branch structural stability. Learn about the relationship between above and below ground biomass, the consequences of pruning, and how these can serve as contributes to tree failure on this episode of ArborViews.

 Released Audio File 
February 28, 2014 Download

©International Society of Arboriculture 2009-2018
PO Box 3129 • Champaign, IL 61826, USA • +1.217.355.9411

Email comments and questions to ISA
Monday, February 19, 2018 7:49:21 PM (CST/ISA Headquarters Time)
Please click here to view our privacy policy.