[CANUFNET] Ash tree appraisal - do you discount?

[Alex Satel]

Hi all,

 

A question for anyone who is involved in preparing/reviewing CTLA-based
appraisals (e.g., trunk formula method) of ash trees: How have you
considered Emerald Ash Borer (EAB) in your valuations of healthy looking
ash? 

 

It would be interesting to see if there is some consensus about how to
proceed; should we start discounting the species ratings because 'all ash
are doomed'? Or should we still consider each tree on its individual merits
and outwardly-visible condition, even though it may already be infested and
not yet showing symptoms? How do we account for the fact that many (if not
most) ash trees will become liabilities once infested/dead? 

 

Personally, I am somewhat hesitant to start discounting still-healthy trees
because of susceptibility to a pest (after all, many elms have survived),
but it is generally accepted that we will lose most of our urban ash trees,
and this may be fair to consider that when assessing value.

 

Any thoughts and experiences would be greatly appreciated. 

 

Kind regards,

 

Alex

 

Alex Satel, MFC
ISA Certified Arborist ON-1353A

Urban Forest Innovations Inc.

1248 Minnewaska Trail
Mississauga, ON  L5G 3S5

T: (905) 274-1022

 <mailto:asatel at ufis.ca> asatel at ufis.ca

 <http://www.urbanforestinnovations.com/> www.urbanforestinnovations.com

Description: UFI new logo very small

 

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