Steve, I haven't seen the same thing here in PA. I don't think the dates of color are being pushed back in this region. I have been trying to find a listing of dates of fall coloration on the internet for periods in the past for comparison purposes, but have not had much luck. In general the process really seems according to the literature to be triggered by changes in day-length and not by temperature changes. Therefore since the length of days have not changed as a result of global warming, the dates of color change should not have changed. I believe there is a difference in the dates of color change and leaf drop from planted trees of a more northern origin is earlier than those of local origin. I don't know what to say about your experiences with the later coloration in your area.
Ed Join me in the Eastern Native Tree Society at http://www.nativetreesociety.org and in the Primal Forests - Ancient Trees Community at: http://primalforests.ning.com/ ----- Original Message ----- From: Steve G To: ENTSTrees Sent: Sunday, October 26, 2008 11:21 PM Subject: [ENTS] Fall colors and leaf drop ENTS Here in N Ohio, on October 26th, most oaks are still green, and many other trees are just beginning to show fall colors and leaf drop. Twenty years ago, tupelos would begin to color up in August; now it's in mid October. It seems "fall" has been pushed back at least a month from what it used to be. Any comments or observations? Steve --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org You are subscribed to the Google Groups "ENTSTrees" group. To post to this group, send email to [email protected] To unsubscribe send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/entstrees?hl=en -~----------~----~----~----~------~----~------~--~---
