Pieter Zuidema
banner
pieterzuidema.bsky.social
Pieter Zuidema
@pieterzuidema.bsky.social

Tropical forest ecologist | Professor | Wageningen University 🇳🇱 | Climate change impacts on trees & forests | Tropical 🌳 rings | Dendrochronology | Timber tracing | Model-data integration

Environmental science 58%
Geography 16%
🚨Calling all #TreeRing lovers!🚨

Join us at #EGU26 for session CL1.2.1 Interdisciplinary Tree-Ring Research

Abstracts exploring tree rings from all perspectives and disciplines are welcome!

Submit here:
tinyurl.com/475xjjfu

K. Treydte, J. Jevšenak, A. Eckes-Shephard, @pieterzuidema.bsky.social
#Demography, dynamics and data: building confidence for simulating changes in the world's forests

📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
by Eckes-Shephard et al.

@WIleyPlantSci #PlantScience

🎉Congratulations 🎓 Dr Sophie Zwartsenberg who defended her PhD thesis @w-u-r.bsky.social about climate & CO2 effects on trees in #tropicalforest

Sophie found that 100y of CO2 rise stimulated tree #photosynthesis, that #treerings are narower during hot & dry years, and more so in drier regions. 🌎🍁
Please pass along, I’m recruiting PhD students to join our Macroecology Lab @uofa-eeb.bsky.social We study phys ecology, macroecology, biodiversity - spanning scaling, trait-based ecology, theory, comparative biology & ecoinformatics. Several avenues for funding. Please reach out if interested🧪🌐🌾
According to this paper, there could be c. 55.5 million tall trees (> 60 m height) across the Brazilian Amazon, with the highest density in the northeast portion. These trees have a disproportionate contribution to the carbon stored in these forests! nph.onlinelibrary.wiley.com/doi/10.1111/...

Reposted by Pieter A. Zuidema

🪵 Diameter drives short-term biomass gains, but long-term carbon storage hinges on wood density, especially in humid forests. To improve accuracy, biomass models should account for radial wood density variation and climate ☁️

🔎 Find out more: buff.ly/kZFoh9B

New #timber #tracing paper on power of combined methods.
Study led by @lauraboeschoten.bsky.social & Barbara RV Meyer-Sand for African timber shows combining methods boosts reliability of tracing. With 3 methods: 95% of samples traced back to <100 km of origin. 🌎🌐🍁
👉 www.nature.com/articles/s43...
Combined genetic and chemical methods boost the precision of tracing illegal timber in Central Africa - Communications Earth & Environment
The origin of timber was correctly identified for 94% of samples in Central Africa, a high-risk region with low tracing accuracy to date, according to an analysis that combined genetic, stable isotope...
www.nature.com

Reposted by Pieter A. Zuidema

🪵Combined methods boost the precision of tracing illegal timber
The origin of timber was correctly identified for 94% of samples in Central Africa, a high-risk region with low tracing accuracy to date.
@lauraboeschoten.bsky.social @pieterzuidema.bsky.social
👉Read here: www.nature.com/articles/s43...
Combined genetic and chemical methods boost the precision of tracing illegal timber in Central Africa - Communications Earth & Environment
The origin of timber was correctly identified for 94% of samples in Central Africa, a high-risk region with low tracing accuracy to date, according to an analysis that combined genetic, stable isotope...
www.nature.com
Attribution of vegetation change to climate change: here we compared vegetation time series to simulations from a process model forced with observed and counterfactual (detrended) climate data. Trends in climate necessary for the model to emulate vegetation trends www.nature.com/articles/s41... 1/3
Shifts in vegetation activity of terrestrial ecosystems attributable to climate trends - Nature Geoscience
An analysis fusing satellite data with a process-based model of plant growth attributes changes in vegetation activity across terrestrial ecosystems to climatic changes.
www.nature.com
A must-read special issue: “Bending the curve towards nature recovery: building on Georgina Mace’s legacy”
royalsocietypublishing.org/toc/rstb/202...
I: Determinants of diversity & resilience.
II: Measuring the state of biodiversity
III: Biodiversity & natural capital
IV: Future scenarios for nature
Philosophical Transactions of the Royal Society B: Biological Sciences: Vol 380, No 1917
royalsocietypublishing.org
Climate change is reshaping forest growth 🌳🌡️💧
Water and temperature control growth timing.
Warmer winters make some species start growing earlier.
Hot, dry summers may shorten growing seasons.

New paper out @globalchangebio.bsky.social led by a former PhD student @csic.es shorturl.at/5Gn8a
Long‐Term Cambial Phenology Reveals Diverging Growth Responses of Two Tree Species in a Mixed Forest Under Climate Change
We studied how climate change affects tree growth by monitoring wood formation in Scots pine (Pinus sylvestris) and Pyrenean oak (Quercus pyrenaica) over 11 years. We found that warmer winters lead t...
onlinelibrary.wiley.com

Yesterday, Bo Zhou successfully defended his PhD thesis at @w-u-r.bsky.social on carbon & water dynamics in a montane forest in subtropical China. Bo studied tree growth rythms & transpiration fluxes.
🎉Congrats 🎓 Dr Bo!
▶️ Defense: wur.yuja.com/V/Watch?v=93...
📙Thesis: research.wur.nl/en/publicati...
Plant species–habitat networks in a mosaic landscape of restored and fragmented tropical forests 🌲🌏

Highlights the role of species interactions and their correlated traits such as dispersal syndromes in promoting landscape-scale connectivity 📊🧪

🔗 doi.org/10.1111/1365...
Good news for a change: Background mortality in unmanaged forests of Europe has not increased over past decades. Great work from the European Forest Reserve Initiative EuFoRIa, out in @journalofecology.bsky.social doi.org/10.1111/1365...
#Tree stems accumulate biomass by adding volume of certain density. Which factor is more important?

Using tropical #treering data we found: diameter increment explains biomass growth at short term; wood density at long term.🌎🌐🍁
#dendrochronology
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
Biomass production of tropical trees across space and time: The shifting roles of diameter growth and wood density
Diameter growth is an important and good indicator of forest carbon production. However, size-related changes in wood density, which are usually neglected, are critical for accurate short- and long-t...
besjournals.onlinelibrary.wiley.com
FINAL VERSION PUBLISHED @forestecosyst.bsky.social
📰Tree competition in West African tropical forests mediated by the functional attributes of species and variation in soil moisture www.sciencedirect.com/science/arti...
🌱 Study in the tropical–subtropical zone shows slope and species diversity shape carbon sequestration!
Leaf nutrients + soil N and P = key drivers of soil organic carbon.
Random Forest and SEM offer restoration insights.
🔗https://link.springer.com/article/10.1007/s11676-025-01895-y
🧪🌏🌐🍁🌺🌱🌿🦤

Reposted by Pieter A. Zuidema

⛰️🌳New study examines wood density variation across an elevational gradient from the Andean tree line to the Amazon basin, finding a decline from low to middle elevations, followed by an increase near the tree line. Species composition and disturbances influenced this pattern. 👉 buff.ly/ujConkt

Reposted by Pieter A. Zuidema

🌳 Forests of the future are growing fast!
By 2100, Quercus mongolica stands could see +145% volume and +80% productivity under RCP8.5.
3-PG + Bayesian calibration = sharper growth predictions.

👉 Explore the findings: link.springer.com/article/10.1...

#Forestry #ClimateChange #TreeGrowth
🌏🌐🍁🌺🌱🌿🦤
Parameterization of the 3-PG model for Quercus mongolica by using tree-ring data and Bayesian calibration - Journal of Forestry Research
Although Quercus mongolica is a widely distributed, economically and ecologically important deciduous tree in northern China, models to accurately predict stand growth at a regional scale are limited....
link.springer.com
A big congratulations to William Farhan-Rios on this paper in @pnas.org, featuring a study of tropical-forest change over four decades along the Amazon-to-Andes elevational gradient in Bolivia and Peru 🌴 ⛰️ 🌐

@mobotgarden.bsky.social @livingearthcollab.bsky.social

1/3

www.pnas.org/doi/10.1073/...
Amazonian and Andean tree communities are not tracking current climate warming | PNAS
Climate change is shifting species distributions, leading to changes in community composition and novel species assemblages worldwide. However, the...
www.pnas.org
🌳🔥Out now: Our review on compound droughts and forest responses - from leaf to ecosystem. Featuring a stunning 20-yr map of canopy temperatures variation across European forests. @chriswernerlab.bsky.social @simonhaber.bsky.social @vallicrosah.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
Impact of emerging compound droughts on forests: A water supply and demand perspective
This review examines the physiological and ecological responses of trees to emerging compound droughts from a water demand and supply perspective, as well as the role of acclimation and consequences ...
onlinelibrary.wiley.com

Reposted by Pieter A. Zuidema

🌲Thinning is a common #ForestManagement practice, but how does it impact #carbon dynamics across different #forest types?

A recent #HoliSoils study explores this question in an upland forest on mineral #soil and a drained peatland forest 🔎🌱🏞️

📖 Find out more ⬇️
holisoils.eu/how-does-thi...
How does thinning affect forest carbon? A look at an upland and a drained peatland forest - HoliSoils
Thinning, the practice of removing some trees to help others grow better, changes how much carbon a forest stores or releases. We studied this effect in two
holisoils.eu
Few weeks left to apply for a fully funded PhD studentship in my lab @rhulbiology.bsky.social as part of new EU project Trees4Adapt
🌲🌳 Fieldwork in forest diversity experiments in Finland www.sataforestdiversity.org
📆 Apply by Sept 8th, start date - Jan 2026
👉 www.findaphd.com/phds/project...
🍁🌍🧪
#NatMicroPicks

Hidden microbial world in trees🌳

Living wood hosts trillions of bacteria making trees a complex ecosystems with major roles in forest health and function.

#PlantMicro #MicroSky

www.nature.com/articles/s41...
A diverse and distinct microbiome inside living trees - Nature
Microbiome analyses of living trees show that a single tree can host approximately one trillion bacteria, with microbial communities distinctly partitioned between heartwood and sapwood and with minim...
www.nature.com
🌴Researchers compared 2749 tree species using 497 Atlantic Forest surveys varying in successional stage to classify them into four disturbance-sensitivity group and found that turnover applies to a small fraction of species, and reassembly varies across time and space🌍🧪
buff.ly/Uv4aQ8d
Reassembly dynamics of tropical secondary succession: Evidence from Atlantic forests
besjournals.onlinelibrary.wiley.com
Hey #ESA2025 #Baltimore! I'm seeking a #PhDstudent interested in #ForestEcology to join my lab, fall 2026. More here: www.landscapesofchangelab.com/join-us

DM me if you'd like to chat in person. Would love to connect and learn about your interests. Non-traditional backgrounds welcome! 🧪🌏🌐🍁🌺🌱🌿🔥
Terrestrial laser scanning can transform national forest inventories by adding new measurements and a 3D perspective. In our new paper we provide a pathway for implementing 3D forest surveys. 1/6 🧪🌎🌳🌲 www.sciencedirect.com/science/arti...
The results of a study in Nature Communications show that climate change is raising the odds of extreme fire years and the number of large forest fires, necessitating proactive measures to mitigate risks and adapt to extreme fire years. go.nature.com/4m8fTSA 🧪
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: 🌳🌲🌏
Job Details | Bangor University Jobs
jobs.bangor.ac.uk