tag:blogger.com,1999:blog-6168620747792092240.post5173840221952057668..comments2024-03-27T15:09:59.039-06:00Comments on Wasatch Weather Weenies: City Creek Melt Out About a Month Ahead of ScheduleJim Shttp://www.blogger.com/profile/15799757451626876963noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6168620747792092240.post-76464734710072375302015-03-30T13:59:31.230-06:002015-03-30T13:59:31.230-06:00A USFS website reports a relationship between the ...A USFS website reports a relationship between the date of snowmelt and timing of spring growth:<br /><br />http://www.fs.fed.us/database/feis/plants/tree/quegam/all.html<br /><br />"Gambel oak produces buds in winter for the following spring. Not all buds produced in winter become active; some dormancy is maintained. Dormant buds may become active if new shoots are defoliated [59]. In southwestern Colorado, at least 5 weeks are required after snowmelt before onset of spring growth. Photoperiod requirements prevent bud burst occurring earlier than the 3rd week of May. Shoot elongation is generally 24 to 27 days and is not dependent upon date of bud burst." <br /><br />Citing:<br /><br />Sweeney, John R.; Sweeney, James M.; Steinhoff, Harold W. 1979. Effects of snow on browse production by Gambel oak. In: Swanson, Gustav A., technical coordinator. The mitigation symposium: a national workshop on mitigating losses of fish and wildlife habitats; 1979 July 16-20; Fort Collins, CO. General Technical Report RM-65. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 637-638. [3775]Anonymousnoreply@blogger.com