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

  The 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: Christopher Gentry (, Henri Grissino-Mayer (, Grant Harley (, Stockton Maxwell (, and Jim Speer (

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)

Last update:  September 2016   © Tree-Ring Society.  All rights reserved.

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