Mike, We have nursery operations in 5 Appalachian states and ship trees all over the East S.Georgia to Maine and West to Nebraska and our experience is regardless of the temperate specie it's where it, seeded/propagated is what makes the most difference. Trees seeded in a local area or derive from cuttings from the same enviroment do much better than trees shipped in from a different locale. Same early growing condition but the "local" adaption matters. It's one of the prime reasons we have multiple locations as we used to buy all our "liners" propagated in Florida and found that the young trees had a significantly higher dieoff rate than trees propagated locally from the best locally grown Mother trees. It works in both Southerly adapted trees as well as Northerly adapted. For example we had several "snowbird" customers living in the retirement Lakes in Tennessee that wanted Paper White Birch in their yards as it reminded them of home. Problem was Paper Whites are not heat tolerant and get borers in the South. We would usually recomend using S.River Birch in their place but our customers still wanted the PaperWhite Birch look. So we did a search and found a block of mature PaperWhites that were grown from seed in the 1940's in a grown up abandond Nursery in Southern TN. We dug these locally adapted trees and supplied our customers with Tennessee adapted Paper Whites. We have noticed as the Climate planting zones have shifted North more adaption problems for certain species. Leyland Cypress (native to Oregon coastal conditions) has a dieoff problem in the deep South with trunk funguses and Bagworm induced dieoff. The Nursery industry response was the Murray X Cypress, a selection of Leyland that is tolerant to heat and drought. Looks and grows the same just tougher. In our test plots we trial new selections specific for Global warming adaptions. Trees adapt generationally pretty quickly or slowly dieoff as they reach the edge of their "local" adaption. A few will self-select and those will move North. Ren
On Feb 10, 6:33 pm, "Mike Leonard" <[email protected]> wrote: > Ed, > > Well that's a good point. Individual trees may not be able to adapt to a > changing climate even though their range is quite extensive. However if > tree nurseries can sell trees of a species that were grown in one > location from the same seed source all over a wide geographic area with > different environmental conditions and still thrive shouldn't that be a > good indicator that a species will do well despite a bit of climate > change? Trees are tough - they survive drought, floods, and all kinds of > abuse from humans so I'm sure they will adapt to a bit more heat, cold, > drought, or rain. > > Mike > > > > -----Original Message----- > From: [email protected] > > [mailto:[email protected]] On Behalf Of Edward Frank > Sent: Tuesday, February 10, 2009 3:44 PM > To: [email protected] > Subject: [ENTS] Re: Birds are Moving North Too > > Mike and Don, > > I recognize that some trees have a wider geographical > distribution than others that this represents a greater tolerance of > environmental conditions for them as a species, but I am unsure if that > directly corresponds to an individual of that species or a particular > sub-population of that species being more tolerant than others in a > particular area. One proposition is not the logical extension of the > other. So managing to promote the increase of the numbers of these > trees that are more tolerant of change as a species, may not really > accomplish anything if the individual trees involved are not also more > tolerant of change. The questions are how much variation is there > between differing populations of a species in different parts of it > range, and could specimens from area of the populations range survive or > flourish in the environmental conditions found in a different portion of > the species range. I don't know the answer, but I can't reasonably make > the jump without any other evidence, that species with a broader range > are made up of individual trees or subpopulations that are more tolerant > of changing conditions. > > Ed > > ----- Original Message ----- > From: DON BERTOLETTE <mailto:[email protected]> > To: [email protected] > Sent: Tuesday, February 10, 2009 2:35 PM > Subject: [ENTS] Re: Birds are Moving North Too > > Mike- > True words! > -Don > > From: [email protected] > To: [email protected] > Subject: [ENTS] Birds are Moving North Too > Date: Tue, 10 Feb 2009 06:01:37 -0500 > > Seehttp://www.boston.com/news/science/articles/2009/02/10/amid_warming_bird > s_shift_north/ > Birds as well as trees and forests will slowly adapt to > a warming planet or a cooling one too if that's the case. > For us foresters, it makes sense to promote those mid > tolerant to tolerant species that naturally tend to become dominants and > codominants with a wide range. > Around my neck of the woods that would be mostly red oak > and white pine. We can make forests more adaptable to climate change by > using the appropriate silviculture to increase the proportion of these > more adaptable species while also trying to keep our forests as diverse > as possible. > Man will adapt too; we always have. > Mike --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
