Beth: The ranges used in the Silvics book are basically the same as the ranges shown by Elbert Little, Jr. This was complied in the 1960s and 1970s, but shows historic ranges as of European settlement. They have never updated those ranges.
Predicted future ranges for a variety of warming scenarios are shown in the Climate and tree atlas, online at this site: http://www.nrs.fs.fed.us/atlas/tree/tree_atlas.html These are envelope models, that take the climate parameters for the historic ranges and project where the same climate would occur for a future climate scenario. Envelope models have some flaws, such as assuming that trees do not have ecotypes adapted to local climates within the range and that tree species will be able to get to the predicted future range--i.e. that there will be no seed-dispersal limitations. Lee At 08:46 PM 11/26/2009, you wrote: >Now with global warming the ranges would be changing. That leads to a >question...how often are the ranges updated in Silvics? Also it is just >my opinon and I could be wrong about the ranges changing. >Beth > >Sent from my iPhone > >On Nov 26, 2009, at 19:28, <mailto:[email protected]>[email protected] >wrote: > >>Jenny, >> >>Reference your question, "where is a distinct western cut-off for >>northeastern tree species?" Tree distribution maps exist showing the >>natural range of each species. You probably know this already. However, a >>good source for range maps is Silvics of North America. Google Silvics of >>North America, choose a species, page down, and view the range map. Each >>species has its range. You can decide what you want to say for a species >>after viewing its map. Hope this helps. >> >>Bob >> >>----- Original Message ----- >>From: <mailto:[email protected]>[email protected] >>To: <mailto:[email protected]>[email protected] >>Sent: Thursday, November 26, 2009 6:47:12 PM GMT -05:00 US/Canada Eastern >>Subject: Re: [ENTS] Winter Tree ID Glossary A-C >> >>Thanks Ed, >> >>Should I include terms like: Beech Bark Disease, buttressed, bottomlands, >>bole, coppice, core (as in 'to core'), colony, cluster, cling (as in >>leaf), canopy, CBH, etc? >> >>I didn't go to another glossary to find these, but used some of these >>terms in my description texts. I see this could potentially be a >>nightmare. But I think it's fun to determine the scope of what a winter >>tree id glossary would include from an ENTS perspective. >> >>FYI the trees I am writing about native to northeastern America - from >>Bronx NYC to Maine, and west to, geez, where? where is a distinct >>western cut-off for northeastern tree species? >> >>Jenny >> >> >>-----Original Message----- >>From: Edward Frank <<mailto:[email protected]>[email protected]> >>To: <mailto:[email protected]>[email protected] >>Sent: Thu, Nov 26, 2009 4:59 pm >>Subject: Re: [ENTS] Winter Tree ID Glossary A-C >> >>Jennifer, >> >>The Arbor Day Foundation has a tree term glossary with a few words: >><http://www.arborday.org/trees/treeguide/glossary.cfm>http://www.arborday.org/trees/treeguide/glossary.cfm >> >>There are some others: >> >><http://forestry.about.com/library/tree/blglosid.htm>http://forestry.about.com/library/tree/blglosid.htm >> >>http://www.2shoptrees.com/treeglossary.htm >> >><http://www.botany.com/index.16.htm>http://www.botany.com/index.16.htm >> >> >>Acorn, Angiosperm >> >>Bark, Balding, Berry, Bud, Bud Scar, Branch >> >>Catkin, Clone, Cone, Conifer, Crown, Crown Spread >> >> >> >>----------------------------------------------------------------------------- >>Ed Frank >> >> >>Check out my new >>Blog: >><http://nature-web-network.blogspot.com/>http://nature-web-network.blogspot.com/ >> >>(and click on some of the ads) >>----- Original Message ----- >>From: <mailto:[email protected]>JennyNYC >>To: <mailto:[email protected]>ENTSTrees >>Sent: Thursday, November 26, 2009 4:34 PM >>Subject: [ENTS] Winter Tree ID Glossary A-C >> >>ENTS, >> >>Happy Thanksgiving! >> >>Back to working on "the NYBG volunteer who was asked to do a small >>winter id brochure and brought back a 50+ page draft for a book" >>project! >> >>I want to add a glossary. So, what winter tree id vocabulary do you >>recommend starting with A - C? >> >>And should words like "bark" be in the glossary? buds? I guess yes? >> >>I wrote a NYBG winter tree id tour and I can add that with a map to >>the book too. Man, I need a deadline. I'm arbitrarily picking >>1/10/10. >> >>thanks Jenny >> >>-- >>Eastern Native Tree Society >><http://www.nativetreesociety.org>http://www.nativetreesociety.org >>Send email to <mailto:[email protected]>[email protected] >>Visit this group at >><http://groups.google.com/group/entstrees?hl=en>http://groups.google.com/group/entstrees?hl=en >>To unsubscribe send email to >><mailto:[email protected]>[email protected] >> >>-- >>Eastern Native Tree Society >><http://www.nativetreesociety.org>http://www.nativetreesociety.org >>Send email to <mailto:[email protected]>[email protected] >>Visit this group at >><http://groups.google.com/group/entstrees?hl=en>http://groups.google.com/group/entstrees?hl=en >>To unsubscribe send email to >><mailto:[email protected]>[email protected] >> >> >> >>-- >>Eastern Native Tree Society >><http://www.nativetreesociety.org>http://www.nativetreesociety.org >>Send email to <mailto:[email protected]>[email protected] >>Visit this group at >><http://groups.google.com/group/entstrees?hl=en>http://groups.google.com/group/entstrees?hl=en >>To unsubscribe send email to >><mailto:[email protected]>[email protected] >> >>-- >>Eastern Native Tree Society >><http://www.nativetreesociety.org>http://www.nativetreesociety.org >>Send email to <mailto:[email protected]>[email protected] >>Visit this group at >><http://groups.google.com/group/entstrees?hl=en>http://groups.google.com/group/entstrees?hl=en >>To unsubscribe send email to >><mailto:[email protected]>[email protected] > >-- >Eastern Native Tree Society ><http://www.nativetreesociety.org>http://www.nativetreesociety.org >Send email to [email protected] >Visit this group at ><http://groups.google.com/group/entstrees?hl=en>http://groups.google.com/group/entstrees?hl=en >To unsubscribe send email to [email protected] -- 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]
