Native Tree Society Tree Measuring Guidelines and related materials.
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The red line is where I would feel comfortable measuring it. I can also see a situation where the blue line might come into play depending on the wording of the AF rules or individual state rules. I'm not sure about the pith lines. When there is some evidence of multiple piths, I tend to go with "guilty until proven innocent." Although that will short change individual trees at times, I think it makes the overall data set much better. But, in the end, I would measure it based on whatever rules I was trying to adhere to.
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Just what I was thinking as well. To take this further- if measured at the red line I would ignore the stem below that line and its influence on crown spread or height, since it would be a separate stem.
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While I wasn't able to extract the images, run them through a pith delineation exercise in Powerpoint, my view is to follow Will's lead...the red line stem is largest of two stems and should be measured at smallest measurement of stem below the forking on the redline stem. Here I am using stem interchangeably with 'trunk', 'tree' as they (red line, blue line stems) in my opinion would have two independent pith lines at ground level.
A challenging specimen in any case!
Don Bertolette - President/Moderator, WNTS BBS
Restoration Forester (Retired)
Grand Canyon National ParkBJCP Apprentice Beer Judge
View my Alaska Big Tree List Webpage at:http://www.akbigtreelist.org
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All what you have to offer, it's great.gclub
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