Dendrochronology and Tree Ages
- Archive of Older Posts
Basswood cross-section from McConnell Mill State
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Maximum Ages for Eastern Trees
WNTS Maximum Ages for Western Trees
Tree Ring research Video ENTS, WNTS, Here is a short
video that was produced by Indiana State University. It is on
Facebook but I believe it can be accessed by anyone who goes to
the link. It shows some sampling via chain saw of a couple dead
trees and talks al little about tree rings. It is available in
standard or High Def. Duration 2:16...
more » Feb 10, 2010.
Eastern OLDLIST update, Feb '10 hi All, just wanted to notify
you of a small, but interesting update for the max age list,
[link] 400 yrs has now been broken for *Q. macrocarpa*!
Steve Voekler has contributed some nice ages for this species
from SD and MN. we are approaching cross-dated 400 yrs for *B.
alleghaniensis* with a nice...
more » Feb 5, 2010.
Scanners for dendrochronology
There was this discussion about the use of scanners for
dendrochronology on the ITRDBFOR. I wanted to pass this along as
it may be of interest to some of you. Jan 21, 2010
Build a Tree Ring Timeline People, I thought this was
neat: Build a Tree Ring Timeline:
[link] NOVA Online | The Vikings | Build a Tree-Ring
[link] The basis of dendrochronology lies in a tree's unique
pattern of growth rings. The rings form a kind of
fingerprint-actually, with its irregularly spaced lines, the
pattern bears a remarkably close resemblance to a DNA
By Edward Frank -
Jan 13, 2010
In California, a Scrub Oak Is an Old Pro at
Cloning WNTS, ENTS, I saw this report
on a California scrub oak ( Quercus palmeri) that might be of
interest to all of you: In California, a Scrub Oak Is an Old Pro
at Cloning By HENRY FOUNTAIN Published: January 4, 2010 In
Southern California, a place where most everything is new,
botanists have discovered something very old: a scrub oak that
has been cloning itself for at least 13,000 years....
By Edward Frank -
Jan 10, 2010
Aging of small trees. techniques?
January 6, 2009
Oldest Tree in New England? Nov. 16,
Angiosperms....are there many (or any) that can
reach a 1,000 years of age with the original stem?
Nov. 11, 2009
Thousand year od tree found in Vietnam
Nov. 11, 2009
Eastern Tree Ages Oct. 16, 2009
Oldest Living Tree
Oct. 7, 2009
- Alternative to
Coring in the Works August 28, 2009
- Redbud and
Dogwood Ring Counts MO July 21, 2009
- Western Maximum Tree Ages
July 08, 2009
- Tree ring counting
July 15, 2009
- Earthworms and tree rings
July 15, 2009
- Using a camera to scan rings for dendrochronology (non-destructive
measurement or large slab samples)
- Dating Junipers
June 11, 2009
- Tree Cookies
- Age of trees in eastern US
April 11, 2009
s a database of ancient trees. Its purpose is to identify maximum ages
that different species can attain such that exceptionally old age
individuals may be recognized.
http://www.ldeo.columbia.edu/~adk/oldlisteast/ Eastern OLDLIST is a 'franchise' database of OLDLIST, a database of ancient trees and their ages. The purpose of this list is to identify and highlight maximum ages for species in eastern North America. This list will contain only well-verified or well-documented tree ages (see Technical Information below for further information). The oldest trees world-wide are typically conifers living in extreme environments (arid to semi-arid or elevational/latitudinal tree lines, of
which the oldest-known tree in the world, Pinus longaeva, lives in a combination of these extreme environments (Schulman, 1954)). Eastern North America is generally warm and moist and dominated by broadleaf species. Maximum tree ages in this region are often much less than other regions (though see ages for Thuja occidentalis, Taxodium distichum and Juniperus virginiana). As a result, maximum ages in this diverse and mostly temperate environment are often overlooked.
University of Arkansas Tree Ring Laboratory http://www.uark.edu/misc/dendro/
The Tree-Ring Laboratory (TRL) was established in 1979 and concentrates on
the development of exactly-dated annual tree-ring chronologies from
ancient forests worldwide. These tree-ring chronologies are based on small
non-destructive core samples taken from living trees, and cross-sections
cut from dead logs. Tree-ring chronologies provide unique archives of
environmental history, and have important applications to climatology,
ecology, hydrology, seismology, archaeology, and history.
The Ultimate Tree Ring Web Pages http://web.utk.edu/~grissino/
Welcome and thank you for visiting the Ultimate Tree-Ring web pages, designed to be the ULTIMATE source for information on the science of Dendrochronology. I've designed these pages to be easily understood by people at all levels of education, from elementary school students to high school students, from first grade teachers to college professors. You won't find anything fancy here - I want these pages to be readable, enjoyable, and (most of all) educational. My goal is to make available as much information about dendrochronology as I can possibly find on the Internet, from the basics of tree-ring dating, to reference and bibliographic information, to products and supplies, to books, and more! My mission was born from an overwhelming need among dendrochronologists for a permanent repository of information that was free to the public, easily understandable, and as comprehensive as humanly possible. Come back and visit from time to time to learn more about new or updated software, new educational tools, new institutions conducting tree-ring research, new publications, and more!
International Tree Ring Databank http://www.ncdc.noaa.gov/paleo/treering.html
The International Tree-Ring Data Bank is maintained by the NOAA Paleoclimatology Program and World Data Center for Paleoclimatology. The Data Bank includes raw ring width or wood density measurements, and site chronologies (growth indices for a site). Tree-ring measurement series from other parameters are welcome as well. Reconstructed climate parameters, including North American Drought, are also available for some areas. Over 2000 sites on six continents are included.