Randy,
Static cables (i.e. steel), anchored in sound wood only serves to make the tree rigid and less able to absorb wind/load energy and can introduce decay (probable main cause of the death of the Wye Oak in MD). Traditionally these are installed under load so they by default "trick" the tree into not building wood to support itself. A dynamic cabling system allows the tree to move and respond to load (and thus grow reaction wood) and absorb loads by flexing and moving. The dynamic systems are designed to be there as a "backup plan" in the event of a severe movement to prevent failure, or to restrain the parts in the event of a failure. Furthermore, static cables often result in the tree growing taller or wider since they are supplementally supported. This should be noted in ENTS tree listings as the figure may be artificial (the GA oak in question, the Sunderland Sycamore, etc.) Will F. Blozan President, Eastern Native Tree Society President, Appalachian Arborists, Inc. "No sympathy for apathy" _____ From: [email protected] [mailto:[email protected]] On Behalf Of Randy Brown Sent: Wednesday, December 30, 2009 9:48 PM To: [email protected] Subject: Re: [ENTS] Georgia/ATL champion oak ID confirmation? Will, What's the harm of cabling the limbs? I always assumed it was no worse than a necessary evil. On Dec 29, 2009, at 10:10 AM, Will Blozan wrote: Eli, Without a doubt, that tree is a cherrybark. What a whopper! I'm saddened to see how it is over-pruned (thinned) and full of what looks to be static cables. Will F. Blozan President, Eastern Native Tree Society President, Appalachian Arborists, Inc. "No sympathy for apathy" _____ From: [email protected] [mailto:[email protected]] On Behalf Of Eli Dickerson Sent: Tuesday, December 29, 2009 9:22 AM To: EasternNative TreeSociety Cc: matt gilbert; Robby Astrove Subject: [ENTS] Georgia/ATL champion oak ID confirmation? Hi ENTS, Some of you know of the amazingly huge and beautiful Oak at Our Lady of Perpetual Hope beside Turner Field in Atlanta. I finally visited the tree this week to get some updated measurements and confirm that it is indeed a Cherrybark Oak and NOT a Black Oak as it is listed on both our city champion tree list and the state champion tree database (http://www.gfc.state.ga.us/ChampionTrees/View.cfm?ID=1418). Jess Riddle mentioned to me that he could tell it was a cherrybark as well, but just for final confirmation I would love for ENTS to view the attached photo's of the leaves, bark, and whole tree so that I can have your input as well. The Georgia Forestry Commission lists the measurements in 1994 as follows: CBH: 249" Height: 124' Spread: 124' My updated 2009 measurements were: CBH: 276" Height: 100' (ENTS SIN method) Spread: 138' In 15 years the tree gained 27" in circumference- that's 6.61' DBH to 7.32'! I appreciate any help you folks can provide, Eli Dickerson -- Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -- Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -- Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -- Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected]
