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Group: Forum Members
Last Login: Monday, January 10, 2011 7:16 AM
Posts: 1,
Visits: 2
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I work in an area that is quite different than the locations that surround us (soils, water level) as it's a delta in the PNW area. Technically, the average elevation is below sea level and we have dikes around the island that provide protection.
This means that, for the most part, many trees are in standing water (rains most of the year round and the water is at soil level when it does rain) and are on top of silty, clay soils that are mostly a hard pan.
I am working with development and tree protection and understand the general research, guidelines regarding trees and construction, but was wondering if anyone knows of research specific to these types of locations. I would like to do the best I can do and ensure the stability is maintained.
Thanks
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Group: Forum Members
Last Login: Wednesday, May 02, 2012 2:38 PM
Posts: 17,
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sounds like the 2 keys are hydrology--will the water level change?--and disturbance--how close to the trees must the activity get? Species and soil matter too of course. it's hard to base decisions on suspected hardpan or other conditions, so it's best to confirm the soil profile by taking deep soil samples.
Jim Urban demos his collection in his Up by Roots workshops, pulling plugs from 3'+ down.
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Group: Forum Members
Last Login: Saturday, February 04, 2012 9:33 AM
Posts: 14,
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I would be concerned about any type of site disturbance. Trees growing in high water tables are not well rooted. Any tree removal will most likely make the remaining trees unstable. There may be root rot associated with the trees also. Check the area and history to see if and what type of tree failure there has been. Some State or Federal agencies may be able to help you understand if there are root rot issues in the area.
Tim Kastning
Grace Tree Service, Inc., President ISA-Board Certified Master Arborist ISA-Municipal Specialist #PN1268BM TCIA Accredited #ID-001 TCIA-Certified Treecare Safety Professional #156
TRACE-Certified Tree Risk Assessor #168
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Group: Forum Members
Last Login: Tuesday, June 14, 2011 5:19 AM
Posts: 10,
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What are the species of trees are involed? Some trees do well in water. Willows,White Cedar Tamarack,Bald Cypress etc, I am sure there is a Long list that live on wet ground.. They obtain air by having a relationship with other organisms, a root mat, air tubes in roots or are near flowing oxygenated water. Trees live in swamps, bogs, flood plains and marshes. I have built several board walks through wet ground. with know ill effects to trees. sugarleaf
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