The Tree-Ring Society is an international scientific association dedicated to tree-ring research and education. 

Goals of the Society are:

  • To promote tree-ring research to the global scientific community
  • To support the organization of symposia, conferences, and workshops on all aspects of tree-ring research
  • To publish results of tree-ring studies
  • To disseminate knowledge of tree-ring research to other disciplines and to the public
  • To provide a forum for communication for dendrochronologists from around the world

The Tree-Ring Society now offers a 50% discount on membership fees to colleagues in developing countries with the same rights and privileges as full-rate members. The 50% discount fee also is now available to retired colleagues wherever they are located.  A developing country shall be defined as one with a per capita gross net income of USD$15,000 or less as determined by the World Bank. 

Our journal Tree-Ring Research is now in digital-only format.  Members have full password access to all articles.  Please visit the new journal pages, and consider submitting your tree-ring related papers. We now offer  authors an open-access option.   

 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.

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 all the basic equipment for sampling and crossdating.  The TDK includes five increment borers, microscope (ten optical plus a digital scope), battery-operated lights, sanding gear, 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 obtaining the TDK for use in your workshop or fieldweek.   


NEW! The Tree-Ring Society is pleased to announce that we are now a recognized 501(c)(3) USA nonprofit!  Please watch for more options that US citizens will have to support the TRS.

The Tree-Ring Society website has a new format and membership management system.  Please let us know if you find any problems with the new system, and look for more changes in coming months.

Conferences and Workshops

TRACE 2016 Conference: Tree Rings in Archaeology, Climatology and Ecology, 11 to 15 May 2016, Białowieża, Poland. 

The Laboratory of Tree-Ring Research (LTRR) is offering short summer courses in dendrochronology, including studies in dendroclimatology, dendroecology, and dendroarchaeology. Classes will convene for three weeks starting 16 May 2016 at the campus of the University of Arizona in Tucson.

1st International Course on Wood Ecology: "Age and Anatomical Structure of Plants" , 29 May to 4 June 2016, Klosters Dorf, Switzerland. Organized by Fritz H. Schweingruber, Holger Gärtner, Alan Crivellaro and Jiri Dolezal. Deadline for registration is 20 April 2016.

3rd Training school in Quantitative Wood Anatomy, 20 to 24 June 2016, San Vito di Cadore, Italy. The course will provide participants with necessary skills to extract high-quality anatomical data from wood samples. Cost will be 600Euro including conference fee, accommodation and meals. For further information please contact Alan Crivellaro (

North American Dendroecological Fieldweek, 24 July - 1 August 2016, Pack Forest, Eatonville, WA, USA.

NEW! Plant Ecology and Digital Wood Anatomy, 1 to 8 August 2016, Shushensky Bor National Park, Cheremushki, Russian Federation. Coordinators for this workshop are Fritz Schweingruber and Eugene Vaganov. 

27th European Dendroecological Fieldweek, 12 to 18 September 2016. Kranjska Gora, Slovenia, in the scenic Julian Mountains.

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, contact Peter M. Brown (pmb [at]
Last update: April 2016
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