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

Society goals are:

  • To promote tree-ring research and career development for the global dendrochronology community
  • To provide a forum for communication by supporting the regular organization of international conferences, workshops, and fieldweeks.  
  • To publish peer-reviewed dendrochronological studies in our journal Tree-Ring Research
  • To disseminate knowledge about dendrochronology to other disciplines and to the public


Announcing the Florence Ellis Hawley Diversity Award! This award recognizes an early-career scientist's accomplishments in dendrochronology with travel support to Bhutan for WorldDendro 2018 and giving a named lecture at the meeting.  See below for an updated announcement about dates for the WorldDendro conference in June 2018.

Consider nominating a worthy early-career scientist for this award (self-nominations are welcome).  Application deadline has been extended to June 30, 2017. Please send nomination packages to Neil Pederson

Also consider supporting the award with a donation (tax-deductible for U.S. citizens) and noting "Hawley Diversity Award" in the "Notes" box.

2017 MEMBERSHIP RENEWALS ARE DUE!  There are multiple membership levels.  This includes 50% discount on membership fees to students, retirees, and colleagues in developing countries.  Membership includes a subscription to Tree-Ring Research, conference information, and conference discounts.   Members vote on the locations of the Ameridendro and WorldDendro conferences.  Your membership makes the Ameridendro and WorldDendro conferences and publication of Tree-Ring Research possible.

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 price for members.   There are no page charges for short papers.  

 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

We offer 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.   

Conferences and Workshops

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.

28th European Dendroecological Fieldweek, 10 to 17 September 2017, in the heart of the beautiful Vosges Mountains in France.

PaleoEvent Data Standards for Dendrochronology Workshop, 10 to 14 September 2017 in Woodland Park, Colorado Dendrochronologists with data management and with dendroecological, -meterological, -hydrological, and -geological interests are sought to develop new data standards for event chronologies.

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

Dates for the 2018 WorldDendro meeting to be held in Thimphu, Bhutan have been announced!  The complete program will take place from the 2 to 22 June, 2018. Registration for the conference will open Sunday, 10 June, and the conference itself will run until Friday, 15 June. There will be a pre-conference Fieldweek from 3 to 8 June, and following the conference there will be week-long post-conference excursions. A conference website will be announced shortly; check back here for further updates.

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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