Stressors of Forest Trees - Managing for Forest Productivity

Stress is a common and normal component of trees in forests and sugarbushes.  Stress can be classified by a number of factors, including duration, extent, severity, source, and the context of the tree.  By understanding the stress agents that trees must contend with, owners and managers can anticipate the problem, help forests develop in ways that the likelihood of stress is reduced, reduce the impact of the stress on the trees and ensure that recovery from stress is a thorough and productive as possible. 

The picture below shows fusarium fungus on sugar maple.  This fungus is associated with overstocked sugar maple on drought prone sites.  In agriculture Fusarium is apparently a soil-borne pathogen.  The fungus is reported to be contagious, and infected trees should be cut and removed from the stand.

A webinar, by yours truly, on December 19, 2012 was titled "Stressors of Trees: Forest Management for Health and Productivity."  This was the first use of the new Webex conferencing software.  Some participants had problems, but in general the system worked well. 

The noon webinar can be seen here.

The evening webinar can be seen here.

Two files were made available during the webinar.  One was on forest management resources within the context of climate change.  Climate change predictions are aptly described as stresses, so the actions suggested for this context is consistent with recommendations in general for managing the face of stress.  Here is a link to that publication (7MB).

Another publication is on the role of silviculture in maintaining the health and productivity of forests with the expectation of emerald ash borer, Asian long-horned beetle, and hemlock woolly adelgid.  This fact sheet was written by Dr. Ralph Nyland of SUNY ESF for the ForestConnect fact sheet series. The full series is here.  This fact sheet is attached.silviculture_invasive_insect_Nyland_ForestConnect.pdf

In summary, understand the stressors that affect your forest trees.  Know how your forest is growing.  Anticipate problems and plan for prevention or solutions.  Avoid interactions of stressors. When working in the woods, be safe.

Some assorted "good" pictures, if you like this sort of thing.

An illustration of the distribution of stain in a sugar maple sapling damaged by a falling object.  Note the stain decreases in extent in a relatively short distance from the wound.  Sugar maple is an example of species that has a well developed compartmentalization of decay.

Below, an oldie but goodie, Armillaria root rot, shoe string fungus.  Common as a secondary pathogen, but can be a primary parasite as well.

Below, stand level foliar dieback associated with a late spring frost in 2010 that occurred through central and eastern NY.  Email me for a picture of tree crowns in this area, which is also a bit droughty for this site and had forest tent caterpillar and gypsy moth in about 2007.  A "nice" confluence of interacting stressors. (I have maxed out the file storage for this blog)

Views: 1141


You need to be a member of CornellForestConnect to add comments!

Join CornellForestConnect


IPhone surveys

Started by Jim Martin in Woodlot Management. Last reply by Michael Dirac Jun 9. 10 Replies

Smart phones have GPS.  Has anyone figured out how to use them for mapping wooded land.  I am especially interested in a way to map  my logging trails. Jim MartinContinue

How long do brush cutter blades work?

Started by Joanne Vaughn in Woodlot Management. Last reply by Joanne Vaughn May 19. 8 Replies

I dunno maybe it's because time flies when it's multiflora rose and buckthorns that are getting whacked. It seems that these blades are needing retirement after 8 or so hours.   Is this typical for this type of material. WIde range of material but…Continue

Tags: cutter, brush

Deer stand damage help

Started by Joanne Vaughn in Woodlot Management. Last reply by Steve Johnstonbaugh Apr 23. 2 Replies

My son left his deer stands up for 3 years and the screw in metal foot pegs have been partially encased in the bark. Has anyone advice about how to extricate them with minimal injury to the trees?Continue


Started by Chaz U. Farly in Woodlot Management. Last reply by Freyda Lynn (Black) Mar 31. 1 Reply

Is there a reason the State of New York stopped selling hemlock seedlings? I'd made up my mind that I'd like to plant a hundred, maybe more, for my grandsons to enjoy, but find no source. Continue

Striped maple control

Started by WJ Rodenhouse in Woodlot Management. Last reply by Joan E Deely Mar 18. 4 Replies

Looking for way to control large volume of striped maple and witch hazel. Both are interfering with growth of oak seedlings. Cut/treat stump? Hack and squirt? if so what chemical for either of these? Best time of year to treat?Best time of year to…Continue

Land owner liability

Started by Duane Lake Association, Inc. in Woodlot Management Mar 10. 0 Replies

This topic may have been beaten to death in the past. Please forgive me if so; I have not seen it or found it.   In the early to  mid 1970s Cornell's Tommy Brown wrote a most excellent fact sheet on land owner liability, pointing out the…Continue

Changes in Emeral Ash Borer Regs

Started by Brett Chedzoy in Woodlot Management Dec 16, 2020. 0 Replies

New year, new approach.  USDA ending quarantine efforts on EAB:  Continue



© 2021   Created by Peter Smallidge.   Powered by

Badges  |  Report an Issue  |  Terms of Service