Search found 1583 matches

by Don
Wed Jun 26, 2019 3:46 pm
Forum: Forest Management
Topic: pictures of some trees at my timberland
Replies: 12
Views: 2627

Re: pictures of some trees at my timberland

Gaines- Reflecting my lifelong appreciation of what came to be called old-growth, the thoughts I had paging down through your comments and images, had me thinking of the way I "define old-growth". 1) Vertical stand structure is heterogeneous (reflects diversity of ages and types) 2) Horizontal heter...
by Don
Fri Jun 14, 2019 9:41 pm
Forum: Measurement and Dendromorphometry
Topic: Comparing instruments for measuring diameter
Replies: 7
Views: 1292

Re: Comparing instruments for measuring diameter

Does anybody else see a similarity between Apple's new Face ID security measure with it's 3D identification of facial features, and the technique that Michael Taylor uses when using digital imagery to create a 3D image of a tree's bole? I'm thinking that there might be developers soon working on app...
by Don
Fri Jun 14, 2019 1:24 pm
Forum: Measurement and Dendromorphometry
Topic: Comparing instruments for measuring diameter
Replies: 7
Views: 1292

Re: Comparing instruments for measuring diameter

As Bob would say, "YEEEEHAAAW !!!"
by Don
Fri Jun 14, 2019 1:23 pm
Forum: Measurement and Dendromorphometry
Topic: Comparing instruments for measuring diameter
Replies: 7
Views: 1292

Re: Comparing instruments for measuring diameter

Looks like the quick reply got lost in the down time...are we back on? (June 14, 2019)
by Don
Sun Apr 21, 2019 8:39 pm
Forum: Measurement and Dendromorphometry
Topic: Comparing instruments for measuring diameter
Replies: 7
Views: 1292

Re: Comparing instruments for measuring diameter

Bob-
It seems that every solution has a compromise...this isn't a problem, if you know the compromise, and can mitigate the shortcoming. 4x, that's what they put in kid's play binoculars...there must be a reason for limiting the 300 to 4x?
-Don
by Don
Fri Apr 19, 2019 2:01 pm
Forum: Measurement and Dendromorphometry
Topic: Opportunity to make our data count
Replies: 6
Views: 903

Re: Opportunity to make our data count

Eric-
Good items to capture, ultimately it's likely to be the union of all data collections...still should be more than girth/height/crown spread/species. Data grabbing NTS-ers, what say you? What fields to you have in your data collections?
-Don
by Don
Thu Apr 18, 2019 10:37 am
Forum: Measurement and Dendromorphometry
Topic: Nikon Coolshot 80i VR
Replies: 8
Views: 930

Re: Nikon Coolshot 80i VR

Erik- Reasonable questions all. Plus, if my understanding of how image stabilization works, it's the "averaging of pixels with the least difference over all" which suggests that there is some accuracy lost in the averaging process...bound to be thoroughly statistical, and subject to confidence level...
by Don
Wed Apr 17, 2019 11:41 pm
Forum: Measurement and Dendromorphometry
Topic: Opportunity to make our data count
Replies: 6
Views: 903

Re: Opportunity to make our data count

For much of the last several decades, it seemed like the phrase or descriptor "old-growth" had fallen out of favor. So I was interested to see the Barton/Keeton release of the Ecology and Recovery of Eastern Old Growth Forests. Having delved into this topic in the 1990s, I had a sense of what it was...
by Don
Wed Apr 17, 2019 10:33 pm
Forum: Books, Articles, and Internet References
Topic: "The most exciting novel about trees you’ll ever read"
Replies: 15
Views: 1454

Re: "The most exciting novel about trees you’ll ever read"

Lucas...even if it didn't start off with "It was a dark and stormy night...", to pre warn you?! I had similar reticence at the first, but stayed with it...in retrospect, I wonder how he managed to make it as cohesive as it was...
by Don
Thu Mar 21, 2019 10:30 pm
Forum: Measurement and Dendromorphometry
Topic: Another opportunity to participate in carbon
Replies: 24
Views: 2793

Re: Another opportunity to participate in carbon

Bob-
Off the top of my head, I recall from one of the Sillet/VanPelt papers that at times annual rings will not be continuous around the complete circumference...I don't recall that the annual rings failed to regain continuity above or below the 'disappearing annual ring'.
-Don

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