Lee- In discussing the migration of forest ecosystems up and down the North Rim (North Kaibab Plateau) with Dr. John Vankat (Ohio U., Miami; retired), it was clear to me that the primary vector of this migration wasn't Ent-like movements at night when nobody was looking, but the dying off live trees (retreating) at the ecotones, or the seedbank re-establishment of trees once there before (advancing).
Without falling into a chicken and the egg conundrum, doesn't one have to assume that other vectors more or less random (wind carried seed, bird or animal carried seed) "laid out the palette, and climate painted the migrating forest ecosystems"? -Don > Date: Sun, 22 Nov 2009 11:24:50 -0600 > From: [email protected] > To: [email protected] > Subject: Re: [ENTS] global warming animals and plants > > Much of the response will be moving north along with the favored climate > for each species. Many animal species have moved north by a few hundred > miles in the last several decades. Trees are unable to respond as fast, > but recent studies show that young trees i the eastern U.S. are on > average 20-30 miles further north than mature trees for most species. > > Lee > > Sedore Demetriou wrote: > > Hi i'm doing a grade 7 project on how animals and plants would adapt > > to global warming ? > > > > > > -- > 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] _________________________________________________________________ Hotmail: Trusted email with Microsoft's powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141664/direct/01/ http://clk.atdmt.com/GBL/go/177141664/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]
