The Tree-Ring Society is a non-profit international scientific association dedicated to global tree-ring research and education. 

Goals of the Society are:

  • To promote tree-ring research and career development for the global dendrochronology community
  • To provide a forum for dendrochronologists to communicate by supporting the regular organization of conferences and workshops all over the world.  
  • To publish results of tree-ring studies in our journal Tree-Ring Research
  • To disseminate knowledge of tree-ring research to other disciplines and to the public

The Tree-Ring Society offers multiple membership levels.  This includes 50% discount on membership fees to students, retirees, and colleagues in lower-income countries.  We use the  World Bank income classifications (current as of July 2016) define countries with lower income category (any below "high").  Membership includes a subscription to Tree-Ring Research, conference information, and conference discounts.   Members vote on the locations of the Ameridendro and WorldDendro conferences.  

Our journal Tree-Ring Research is in digital-only format.  Members have full password access to all articles.  Tree-Ring Research has an impact factor (2015) of 2.565; the 5-year impact factor is 2.220.  Please visit the journal pages and consider submitting your tree-ring related papers. We offer authors an open-access option, with a reduced cost for members.   

 High resolution versions of past issues  of Tree-Ring Bulletin and Tree-Ring Research from Volume 1 (1934-35) to Volume 62 (2006) are available from the University of Arizona.  (We are working on getting later volumes online.)

The Tree-Ring Society is on Facebook and Twitter. And be sure to join The Tree-Ring Times, a Facebook forum dedicated to disseminating and discussing information, news items, and recent activities and advances in the tree-ring sciences.

The Tree-Ring Society offers a Traveling Dendro Kit for workshops and fieldweeks that provides the basic equipment for sampling and crossdating.  This kit includes five increment borers, microscope (ten optical plus a digital scope), battery-operated lights, sanding equipment, straws, and more, in a hard-sided suitcase that weighs less than 22 kg (50 lbs) to meet most airline check-in baggage requirements. Please contact Peter Brown (pmb at rmtrr dot org) for more details about borrowing the kit for your workshop or fieldweek.   


The Tree-Ring Society is now a recognized 501(c)(3) USA nonprofit!  For U.S. citizens, you can now make a tax deductible donation directly from our website by clicking the "Donate" link in the Menu bar listed above.

Conferences and Workshops

4th International Training School in Quantitative Wood Anatomy using ROXAS – From Samples to Data 13 to 17 March 2017; Laboratory of Tree-Ring Research, Tucson, Arizona, USA.

Association of American Geographers Annual Meeting will be held in Boston, Massachusetts, 5-9 April 2017.  Sessions may include:

Frontiers in Dendrochronology (invited)

Dendrochronological Applications

Once you have registered, please email the AAG PIN number to Christopher Gentry ( Organizers for the session include:
Christopher Gentry (
Henri Grissino-Mayer 
Grant Harley (
Stockton Maxwell 
Jim Speer (

TRACE2017  (Tree Rings for Archaeology, Climatology and Ecology 2017) will be in Svetlogorsk, Kaliningrad region, Russia, 16 to 21 May, 2017.

Laboratory of Tree-Ring Research Summer 2017 Presession courses in Dendrochronology. Three concurrent courses are offered: Dendroclimatology, Dendroecology, and Dendroarchaeology.  Classes will convene for three weeks, from 15 May 2017 through 2 June 2017, at the campus of the University of Arizona in Tucson, USA.

27th Annual North American Dendroecological Fieldweek (NADEF) will be held at the A.L. Mickelson Field Station near Cody, Wyoming, USA. The fieldweek will run from 22 to 31 July, 2017.

12th International Congress on Ecology (INTECOL) will be held in Beijing 21 to 25 August, 2017. The congress will include a session on “Historical ecology and climate change”  (Theme 11-2).

9th International Geochronology Summer School:
Dating techniques in environmental research
; 3  to 8 September 2017; Klosters, Switzerland.

EuroDendro 2017 conference, Tartu, Estonia; 6 to 10 September 2017. Also here's a nice video on Estonia as a small teaser of what will be waiting for you at the conference.

5th International Conference of the Asian Dendrochronological Association will be held in Ulaanbaatar, Mongolia, 13 to 17 September, 2017. Further information will be forthcoming in spring 2017.

“Microscopic Preparation Techniques for Plant Stem Analysis”  by Holger Gärtner and Fritz Schweingruber (2013, Verlag Dr. Kessel, Remagen. 78 p.) is now available as a free PDF from the above linked website.

The 2018 WorldDendro meeting will be held in Thimphu, Bhutan!  Please check back as more information becomes available, and we look forward to seeing our tree-ring colleagues from around the world in Thimphu the summer of 2018

For questions or comments about the website, contact Peter M. Brown (pmb [at] The Tree-Ring Society is a 501(c)3 non-profit association. 
Address membership questions to Lori Wilson (trslori [at] gmail dot com)

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