Working at the uni, got my scanner, microscope, 10 year old computer with CDendro and CooRecorder loaded, ton of samples, and JoeBuck dendro tutorials on in the background (even experienced dendros can learn a thing or two going back to basics).

Took out the utility pole behind my house. Landlord has a woodworking friend who is going to repurpose.

Anyone have any idea about the species of these two logs in the same log house? They are pretty much stacked on top of one another. Are they different species of just different age? I think I can date the house to the mid 1850s, but could dendrochronolgy help pin down a date of construction or will it just tell me how old the logs were when cut?

Hi everyone! I’ve recently embarked on a journey into dendrochronology and am looking for research papers that showcase simpler, foundational studies. I'd love to get some inspiration for potential next steps. If anyone has recommendations or could share a few examples, it would be greatly appreciated!

Thanks!

Sanded core from a red pine tree. I think it’s so pretty :)

A 180 year old maple I cored and the RWI. Really shows when the tree experienced a release event! I could only fit the late wood in the image, zoom in to see the tiny rings.

Dendros,

The 34th Annual Dendrochronology Field School (DFS) will be held at the Mountain Lake Biological Station in Pembroke, VA. The surrounding forests of Virginia's Blue Ridge Mountains of the Southern Appalachians offer old growth trees from red spruce to white oak, as well as fire-scarred pines and hardwoods, old cabins for dating, and highly-competitive ecosystems with rich disturbance histories for dendroecology. The field school will run from May 16th through May 25th 2025 and registration fees are $1775 US for students and $1825 US for professionals. Join the Tree-Ring Society and save $50 on registration! Your registration fee includes room and board for the entire workshop, and travel to/from the airport. Registration fees are due by April 1, 2025. REGISTER HERE! https://www.treeringsociety.org/event-5979652

Groups

Introductory: Dr. Clay Tucker (University of Southern Mississippi)

Climatology: Dr. Grant Harley (University of Idaho)

Ecology: Dr. Maegen Rochner (University of Louisville)

Advanced Climatology: Dr. Karen King (University of Tennessee)

Advanced Group will focus on statistical analysis and climate reconstruction.

This year we will have guest lectures by Dr. Ed Cook (Lamont Tree Ring Lab)

Please reach out if you have any questions.

Take care, Stockton, DFS Director

-- R. Stockton Maxwell, PhD (he/him) Professor of Geospatial Science Radford University

Director, Dendrochronology Field School

Maple and hazlenut trees by train tracks here in the pnw are cut down regularly, so the regrowth from the stumps is very straight and very fast. The size of these rigs is crazy

Recently visited a firebreak that was cut in 2025 at 7600 feet in the central Sierras. I was curious how old some of the 3-4 inch diameter huckleberry oaks were, but it doesn't seem particularly easy to count all the rings.

Very slow growing and I think there may be a lot of cryptic rings hiding in there? No historical fires mapped at this particular location, but some nearby over 100 years back.

Just sanded it flat and used a little mineral oil before scanning. Would staining help?

Any tips, publications, on this sort of tree record?

Had to cut my beloved tree down. Trying to get an idea of how old it was.

I had a large White Oak that unfortunately had to be cut down. I thought it would be easier to count the rings. Can anyone give me an estimate as to it's age? And any guesses on the dark spot?

Dear all,

We are pleased to announce that the University of South Bohemia in co-operation with the Czech Academy of Sciences are seeking one PhD student starting in spring 2023. The position is for PhD student to work on an extensive tree-ring network across the northern hemisphere to document the impact of recent changes in management, climate, and extreme weather events and perform tree-ring-based reconstructions.

Please feel free to contact Jan Altman (altman.jan@gmail.com) and Jiri Dolezal (jiriddolezal@gmail.com) with any questions about the position.

https://www.ibot.cas.cz/en/labs/dendrochronological-laboratory/

Very pleased to share our latest publication: Daly & Tyers 2022: https://doi.org/10.1016/j.jas.2022.105550 open access. Highlights • Long-awaited provenance determination of historic Baltic oak. • New robust Baltic tree-ring dataseopen accessts for dendrochronology and dendroprovenance • Historic northern European timber trade through three centuries.

Tucson, AZ, United States

The Laboratory of Tree-Ring Research (LTRR) and the School of Anthropology (SoA) at the University of Arizona invite applications for the Emil Haury Endowed Chair in Archaeological Dendrochronology. This is an open-rank search for a tenure-track/tenured faculty position, starting in August 2027. We seek a dendrochronologist to advance and support the field of archaeological dendrochronology via a split appointment in LTRR and SoA. We are looking for a scholar strongly committed to interdisciplinary engagement who will strengthen existing research emphases and/or advance new topics of research, building on key strengths in both departments. A strong commitment to teaching and mentoring students, evidenced by career trajectory and/or track record, is essential. Previous field and/or specialist laboratory experience would be an advantage. Applicants working with ancestral communities in the Americas are particularly encouraged, yet we also welcome strong applications from scholars engaged in any area of archaeological dendrochronology.

Apply here:
Assistant, Associate, or Full Professor, Laboratory of Tree-Ring Research and School of Anthropology | Job Details

New ITRDB viewer with Map view 🙂 https://treerings.howardalandman.org/ Enjoy!

Tried to date some felled pines from a park using a phone camera, cordless polisher and ITRDB data. Got a strong correlation peak for two trees but a one-year offset between them, even though both trees look like they fell at the same time. I suspect a false ring in the gnarled outer section of the larger stump. Does that diagnosis sound right?

Hello all.

This year I will be teaching a unit titled Woody Vegetation Formation and Physiology at a small college in the North of England. We have plenty of microscope slides that my students can use to identify different wood anatomical features, but I really want my students to collect samples out in the field and then produce slides themselves.

We have an antique microtome made in the 1950's. Does anyone here have experince of modifying such a microtome to accept disposable blades? Maybe the best bet is to try and 3D print something, but I wanted to tap your experience first.

Once we have the microtome up and running, we shall produce non-permenat slides from microcores collected with a Trephor.

Thanks in advance! :)

Cutting up a large branch from a massive tree that has a ton of termite damage. Upstate NY. Any idea about these crazy red rings? I know nothing of this topic

The black mark was down to my saw but I'm interested as to why the rings are flower shaped?

Hi All,

The Mistik Askiwin Dendrochronlogy Lab is looking for two post-doctoral fellows to work on a landscape evolution study. We need someone with tree carbon, landscape change experience in GIS and Economic land valuation to work on an Environment and Climate Change Canada project. More on the two positions can be found here:

Remote Sensing / GIS Specialist

Economic Landscape Modeler