Don:
I cored quite a few trees in the 2.5-3.0 cm dbh size class while working
on my Ph.D., mostly sugar maples and hemlocks. For the maples, I had to
have someone stand on the opposite side of the tree and push towards me,
otherwise the tree just bent and pushed away when I tried to core it. It
is really hard to get the corer started in small trees with hard wood.
A few of the small tree developed a split, but most fared OK, and are
still alive 25 years later.
Lee
DON BERTOLETTE wrote:
Will/Ryan-
I'm too old to be intuitive on metric/standard conversion, but
wouldn't 50mm be about 2 inches? I'm not sure I'd be comfortable
coring 2 inch diameter trees...wouldn't the corer with threads
approach 1/2" in diameter? With little wood left on each side to
'strengthen' the coring point, I'd think that it would have all the
elegance of an exit wound left by a 38 caliber S&W...;>)
-Don
------------------------------------------------------------------------
From: [email protected]
To: [email protected]
Subject: RE: [ENTS] age of small trees. techniques?
Date: Wed, 6 Jan 2010 20:05:05 -0500
Ryan,
A small borer should work. They are available in sizes as short as 6
inches.
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 *Ryan McEwan
*Sent:* Wednesday, January 06, 2010 7:27 PM
*To:* [email protected]
*Subject:* [ENTS] age of small trees. techniques?
Hi all,
A former advisee of mine has moved on and is now working on a study of
forest dynamics on Mount St. Helens. He is working right at
tree-line. He would like to age the trees, but he is not allowed to
destructively sample (cut) them. The diameter of many of these trees
is 50mm. YIKES!! That is small. He asked me for advice on how to do
this and I dont have a the foggiest clue. ENTS to the rescue?
Best,
Ryan
------------------------------------------------------------------------
Hotmail: Trusted email with powerful SPAM protection. Sign up now.
<http://clk.atdmt.com/GBL/go/196390707/direct/01/>
