Pieter Zuidema

Job opening: lecturership (research & teaching) in forestry or agroforestry at Bangor University. This is probably the best forestry programme in the UK and a great place to work. Deadline 1 Sep. More here: 🌳🌲🌏

Tropical Tree-ring Network Website Visit the post for more.

Where did we get the data? Where can you find them?

150 scientists contributed 1000s tree-ring data through Tropical Tree-Ring Network. This network unites tree-ring scientists & data. To fill tropical data gap all data are uploaded to International Tree-ring Databank.
tropicaltreeringnetwork.org

What does this mean for the future?

The past drought #resilience will very likely diminish. Stronger drought impacts in hotter & drier regions (see Fig) give a glimpse of aggravated drought responses in future. Also, droughts increase tree death, causing lasting carbon losses from forests.

What happened after the droughts? And during wet years?

Growth bounced back quickly after droughts. During the 1st post-drought year, pantropical average tree growth was similar to that of pre-drought year. Growth increase during wet years partially compensated for drought impacts.

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Pantropical tree rings show small effects of drought on stem growth Increasing drought pressure under anthropogenic climate change may jeopardize the potential of tropical forests to capture carbon in woody biomass and act as a long-term carbon dioxide sink. To evalua...

How do tropical #trees deal with droughts? The answer is published today in @science.org

Our pantropical #treering analysis revealed 2.5% growth reduction during #drought years. Yet, growth declined by >10% in 1/4 of 500 study sites, and in hotter & drier regions.

doi.org/10.1126/scie...
🌍🍁🌐
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Senior Editor for Journal of Applied Ecology - British Ecological Society Join the editorial board on Journal of Applied Ecology! Apply by 07 Sep 2025.

We're seeking a new Senior Editor! ⏰

Are you...
👉intrigued by the interface between ecology & biological resource management? 🌎
👉a clear communicator who enjoys working as part of a team? 💬
👉committed to maintaining high editorial standards? 🧪

More info 👇
bit.ly/4lPzaIx

Happy to virtually present a keynote on #treerings in the tropics tomorrow at the WorldDendro conference.

Main message: now that potential & applications of tropical #dendrochronology have been amply shown, it s time to synthesize & scale up to pantropical studies

sites.google.com/view/african...

Tropical Central African bomb radiocarbon reveals antiphase air-mass atmospheric fluxes and vegetation-growth relationships To achieve more accurate Earth system model projections of diverse climate scenarios, researchers need observation-based data on the movement of carbo…

What tree rings tell us about large-scale air movements. 14C records from Cameroonian trees (growing on the Northern Hemisphere) reveal that CO2 they absorb originates from other side of equator. Study lead Guaciara Santos; tree rings @petergroen.bsky.social.
www.sciencedirect.com/science/arti...

Postdoctoral Fellow, Global Science in Sao Paulo, São Paulo, Brazil | Science at The Nature Conservancy Apply for Postdoctoral Fellow, Global Science job with The Nature Conservancy in Sao Paulo, São Paulo, Brazil. Science at The Nature Conservancy

Two open postdoc positions to work on synergies/trade-offs of cocoa & coffee agroforestry for people, biodiversity and carbon.

The Nature Conservancy Brazil:
careers.tnc.org/us/en/job/JR...

Smithsonian Institute US: trustcareers.si.edu/en/postings/...

New paper on tropical #timber #tracing! We tested the use of wood oxygen stable isotopes (δ18O ) for tracing. We produced #isoscapes for 5 major tropical timbers. These isoscapes alone had limited utility. Combinations with other techniques may help. #timtrace
www.sciencedirect.com/science/arti...

Please RT: 2 PhD position @uni-freiburg.de investigating #reccurent #drought in #forest using in-situ #stableisotopes in #ecohydrology

Unlocking the geography of Azobé timber (Lophira alata): revealing spatial genetic structure beyond species boundaries - BMC Plant Biology Background The illegal trade of tropical timber constitutes a major and persistent environmental problem. Since the detection of fraud in trade documents remains challenging, forensic tools that can i...

Can genetic characteristics reveal the provenance of tropical timber?

In a study on #Azobe timber led by Barbara Rocha Venancio Meyer-Sand we concluded: yes that s possible. Yet, the spatial resolution varies across regions.

#eudr #timtrace #tracing

bmcplantbiol.biomedcentral.com/articles/10....

Just a few days left to apply for this #technician position in my group! Like #forests? #Data? #Python? Working outside?

Come and help support our research using high resolution #remotesensing #lidar data to study #forests 👇

Please share!

please share: I am recruiting for a PhD student to join my lab for fall 2025. I am interested in finding someone who is passionate about applying models to study plant ecology. Potential study systems include urban environments, sagebrush steppe, and tropical forest. caughlinlab.com/join-the-lab/

Congrats on an important paper @juliakoricheva.bsky.social!

What trees to plant in #forest #restoration? New research in @nature.com sheds unexpected light. 'Fast growers' underperform in forest experiments. Madelon Lohbeck and I discuss this & argue for adding social, climate & biodiversity selection criteria (rdcu.be/eed9W).

www.nature.com/articles/d41...

🚨 #job🚨: The Department of Forest Ecology and Management at the Faculty of Forest Sciences, SLU, is hiring a full-tenure Professor in silviculture.

📅 Deadline: 29 April 2025
🗺️ Location: Umeå, Sweden

➡️https://www.slu.se/en/about-slu/work-at-slu/jobs-vacancies/?rmpage=job&rmjob=12044&rmlang=UK

Tropical forests in the Americas are changing too slowly to track climate change Understanding the capacity of forests to adapt to climate change is of pivotal importance for conservation science, yet this is still widely unknown. This knowledge gap is particularly acute in high-b...

Are tropical #forests keeping up with climate change? Not quite, it turns out.
In study led by @jeaggu.bsky.social in @science.org, we used a massive plot dataset from across Americas to check whether tree characteristics are tracking #climatechange. They hardly do.
www.science.org/doi/10.1126/...

We quantify, map and analyse wood density across tropical South America.

Our analysis led by Martin Sullivan refines the east-west Amazon gradient in wood density, improves it by revealing much finer variation, & extends predictions to Andean, Dry & Atlantic forests.
www.nature.com/articles/s41...

35th European Dendroecological Fieldweek We are pleased to announce the 35th European Dendroecological Fieldweek, taking place from August 29 to September 5. This event will be held in the town of Son (Spain) at the heart of the Catalan Pyre...

I am very happy to announce that the Dendrolabs of @wslresearch.bsky.social and @biologiaub.bsky.social will be co-organizing the 35th European Dendroecological Fieldweek in the Pyrenees! It's the perfect opportunity to learn about dendrochronology and have fun in a beautiful landscape!
Details 👇

6 year ago I spent 5 months sampling leaves in Ivory Coast.
That was my MSc thesis, I would have never though back then that this work would have ended up in Nature!

Greatly led by @jeaggu.bsky.social!!

This is figure 1, which shows simulated contrasting precipitation responses to deforestation at different scales (0–1,000 km) over the Amazon region.

Amazonian deforestation is making wet seasons wetter and dry seasons dryer, according to research in Nature. The analysis highlights the local and regional effects of removing trees from the tropical region. https://go.nature.com/41jCClO 🧪

The importance of tropical tree-ring chronologies for global change research Tropical forests and woodlands are key components of the global carbon and water cycles. Yet, how climate change affects these biogeochemical cycles i…

How many tropical tree species form annual growth rings? Around 500.
How many #tree-ring chronologies exist there? Also 500.
These data are important in #globalchange research. That s our message in review led by Peter Groenendijk.

#dendrochronology #forest

www.sciencedirect.com/science/arti...

I'm #hiring: PDRA to join my #ukriflf project to understand how forest structure, function and dynamics are linked in Europe, using high resolution remote sensing data (TLS, UAV-LS). Based in Cambridge.

Please share! 🌳⚡🛰️🌲

Full details: www.jobs.cam.ac.uk/job/50447/

#pdra #forests #lidar

Thanks. Yes, I agree with comment on picture

Thanks Margaret. We did not test that…

Centennial‐scale atmospheric CO2 rise increased photosynthetic efficiency in a tropical tree species Tropical forests substantially influence the terrestrial carbon sink. Their contributions to the forest carbon sink may increase due to the stimulation of photosynthesis by rising atmospheric CO2 (C...

A century of rising CO₂ has increased photosynthesis of mature trees in tropical forests. This is our conclusion in study led by Sophie Zwartsenberg in @newphyt.bsky.social. We did novel isotope analyses in tree rings from Australia, Thailand & Bangladesh. nph.onlinelibrary.wiley.com/doi/full/10....

Just returned from the #caatinga dry #forest in Ceara, Brazil where we study how trees deal with #drought.

PhD candidates Natali Caro & Gabriela Ushida equipped 🌳 with sensors & took wood samples for #dendrochronology. Impressive research infrastructure to understand & predict drought impacts.

Chargé de recherche - Suivi des communautés de vertébrés de la canopée des forêts tropicales (F/H) @ Muséum national d'Histoire naturelle Muséum national d'Histoire naturellerecrute !

We're hiring a 2-year postdoc to study the diversity of the vertebrate communities in the canopy of the Guianan rainforest. If you want to candidate to join us in this fantastic adventure, follow the link. recrutement.mnhn.fr/front-jobs-d...

Researcher on land surface model calibration | FINN.no About the positionSummary: CICERO is expanding our research on land surface modeling, which is essential to address societal questions regarding climate

We have a *permanent* position open at
@ciceroclimate.bsky.social
, working on calibration and general awesome-ification of the CLM-FATES model, across a fun set of projects www.finn.no/job/fulltime... Flexible wrt career stage and the balance of science/technical work. Tell all your friends!