Typical age of 20" diam Hemlock in climax forest?

General discussions of forests and trees that do not focus on a specific species or specific location.

Moderators: edfrank, dbhguru

#1)  Typical age of 20" diam Hemlock in climax forest?

Postby greif » Tue Sep 30, 2014 12:58 pm

I was hiking in IBM Glen (NY state- fingerlakes) which has a nature preserve and says that the Hemlocks are old growth. Many trees were marked for cutting before a last minute reprieve and conversion to a preserve. These trees seem a bit small for old growth (typ. 20" diam).
Question: do hemlocks in a climax forest typically grow that slowly?   I did see a couple larger diam hemlocks down in the gorge. I hope to do a proper trip report soon.
User avatar
greif
 
Posts: 18
Joined: Mon Mar 15, 2010 11:03 pm
Location: Rochester, NY, USA
Has Liked: 0 times
Has Been Liked: 1 times
Print view this post

#2)  Re: Typical age of 20" diam Hemlock in climax forest?

Postby Will Blozan » Tue Sep 30, 2014 8:08 pm

Without photos of crown architecture there is no way to "guess" with reasonable accuracy. I have personally cored 400 years old hemlocks less than 8" diameter, so yes, they can grow really slowly. Can you get some photos? Several NTS are quite skilled at aging from tree architecture.

Will
User avatar
Will Blozan
 
Posts: 1153
Joined: Fri Mar 12, 2010 8:13 pm
Location: North Carolina
Has Liked: 1558 times
Has Been Liked: 442 times
Print view this post

#3)  Re: Typical age of 20" diam Hemlock in climax forest?

Postby Joe » Wed Oct 01, 2014 7:42 am

they can grow so slow because they are extremely shade tolerant
Joe
User avatar
Joe
 
Posts: 1767
Joined: Sat Mar 13, 2010 9:26 am
Location: Massachusetts
Has Liked: 0 times
Has Been Liked: 171 times
Print view this post

#4)  Re: Typical age of 20" diam Hemlock in climax forest?

Postby greif » Wed Oct 01, 2014 12:52 pm

Here are some photos of trees at IBM Glen. The biggest Hemlock in the woods at the top of the gorge seemed to be around 20" diam (lots of them). In the gorge I saw 2 or 3 that were much larger.
GR
Attachments
IMG_5140.JPG
IBM Glen, tree on side of steep side of gorge- 41" diam.
IMG_5125.JPG
IBM Glen, typical Marked Hemlock
IMG_5130.JPG
Fallen Hemlock at IBM Glen, seems to have approx. 10 or more rings per inch.
IMG_5136.JPG
Marked trees at IBM Glen typ. 20" diam, and what appears to be logging road?
User avatar
greif
 
Posts: 18
Joined: Mon Mar 15, 2010 11:03 pm
Location: Rochester, NY, USA
Has Liked: 0 times
Has Been Liked: 1 times
Print view this post

#5)  Re: Typical age of 20" diam Hemlock in climax forest?

Postby adam.rosen » Thu Oct 02, 2014 8:47 pm

My little experience with old growth hemlock is that they are often larger, I don't know from crown architecture, but the growth patterns of those trees indicate that they did not grow up in an open field.  If they are old growth, then they didn't get cut when the larger trees did.  More likely, second growth in a forest that is second growth, at least 80 and more like 120 years old.
User avatar
adam.rosen
 
Posts: 74
Joined: Sun May 15, 2011 8:20 pm
Location: Vermont
Has Liked: 0 times
Has Been Liked: 21 times
Print view this post


Return to General Discussions

Who is online

Users browsing this forum: No registered users and 1 guest