Dale/Bob- You guys are facing the same conundrum that land managing foresters face, albeit from the other direction...forest mensurationists rely on biostatistical analysis, and my poor grasp of that at least acknowledges the role of the sample size plays in obtaining given levels of accuracy.
Knowing the level of accuracy you want, I am not sure it is do-able unless you were singularly focused on that one task...which is unlikely in either of your cases...the rest is deciding how inaccurate of analysis you can stand. -Don Date: Thu, 5 Nov 2009 13:36:16 +0000 From: [email protected] To: [email protected] Subject: [ENTS] Re: Continuing the mission Dale, You've performed an incredibly valuable service and have placed Cook Forest State Park legitimately at the head of the list. That is more than enough. Plus, I'm retired and can devote the time. I also want to get a handle on volume growth of the pines on an annual basis, both individual trees and stands. Perhaps others can convert the volume growth directly into carbon sequestration - a practical application. I'm convinced that traditional methods of keeping track of the radial growth of these pines does not translate into reliable volume growth. There are likely some high-powered mensurationsts who can do the job, but their work and methods has not filtered down, at least not that I've seen. Bob ----- Original Message ----- From: "Dale Luthringer" <[email protected]> To: [email protected] Sent: Thursday, November 5, 2009 8:05:44 AM GMT -05:00 US/Canada Eastern Subject: [ENTS] Re: Continuing the mission Bob, Wow, the Jake Swamp is almost there... I'm not sure if I'll ever re-measure all of Cook's pines, but re-measuring some of the upper 150's and 160's is doable... Dale On Wed, Nov 4, 2009 at 9:12 PM, <[email protected]> wrote: ENTS, Today I led an interpretive walk at MTSF for a Greenfield Community College environmental science class. Before the walk, I spent about an hour remeasuring 4 white pines as part of an ENTS update of significant trees on DCR properties. I took extra time to get repetitive values. The measurements follow. Tree Species Height Girth Crown Spread Champ Tree Pts Jake Swamp WP 169.3 10.5 46.2 307 Mirror WP 156.4 11.2 44.0 302 Tom Porter WP 157.1 8.6 35.0 269 Paula Horn WP 154.4 10.6 47.0 293 The slow task of remeasuring literally hundreds of trees has to be a labor of love. But why do it? Well, for a variety of reasons. One way to bring attention to an outstanding public forest is to gather data on it in a systematic way and present the data to the resource manager. The impressively tall trees of Mohawk should not remain anonymous. Their story should be told in numbers. Can't think of anything I'd rather be doing. Bob _________________________________________________________________ Hotmail: Trusted email with powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141665/direct/01/ --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -~----------~----~----~----~------~----~------~--~---
