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Pieter Zuidema

@pieterzuidema.bsky.social
520 followers 586 following 27 posts

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

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Pieter Zuidema @pieterzuidema.bsky.social · 6h
Does El Niño offer a sneak preview of future climate for tropical forests? Well, yes. Our new study shows that heat & drought during 23-24 El Niño will likely be new normal for many tropical forests. A worrisome preview. #tropicalforests #elnino 🍁🌐 agupubs.onlinelibrary.wiley.com/doi/10.1029/...
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Brian J. Enquist @bjenquist.bsky.social · 28/09/2026
Please pass along: I’m recruiting PhD students to join our Macroecology Lab. We study physical ecology, macroecology, and biodiversity — spanning scaling, trait-based ecology, theory, comparative biology & ecoinformatics. Several avenues for funding. Please reach out if interested 🧪🌐🌾
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Pieter Zuidema @pieterzuidema.bsky.social · 29/09/2026
🎉🪵 New timber tracing project funded!! 🪵🎉 Very pleased with new funding for research on origin verification of tropical timber. We will combine novel radar satellite imagery with state-of-the-art timber #forensics measurements and predictive #geostatistical models. #illegaltrade #RADD #EUDR 🍁🌐
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Pieter Zuidema @pieterzuidema.bsky.social · 21/07/2026
Are tropical trees less sensitive to climatic fluctuations if they grow in more humid environments? Well, yes! In a #treering study by Sophie Zwartsenberg, we show growth of Australian trees is less affected by water shortage at more humid sites.🍁🌐 🔗https://doi.org/10.1016/j.agrformet.2026.111336
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Jens-Christian Svenning @jcsvenning.bsky.social · 28/05/2026
🌿 We are hiring a new 2-yr postdoc in @econovoau.bsky.social at @aarhusuniint.bsky.social, on large-#herbivore ecology, trophic #rewilding & novel ecosystems- asking when alien & feral #ungulates enhance biodiversity & when they contribute to degradation🐪🐎🦓 Deadline: 28 June 2026. Details below 👇
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Pieter Zuidema @pieterzuidema.bsky.social · 20/05/2026
Where does our #timber come from? In new study led by Jakub Truszkowski, we show timber #tracing gets more accurate if wood chemical data from different tree species are combined. Data gaps of 1 species are filled by the others. 🍁🌐🌍 #Timtrace #forest #woodtrade link.springer.com/article/10.1...
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Markus Eichhorn @markuseichhorn.bsky.social · 02/02/2026
Climate warming is generally making trees grow faster, but the greater effect is that tree growth is becoming more unpredictable, creating a threat to the stability of forests. New paper by Li & He (2026). 🧪🌏🌐🌲🌳
onlinelibrary.wiley.com
Variation in Tree Growth Increases With Global Warming
In recent decades, considerable research has focused on the long-term trend of tree growth rates under global warming, yet little attention has been paid to trends in high-frequency tree growth varia...
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ForestPlots @forestplots.bsky.social · 23/01/2026
Tree diversity is changing in the Amazon and Andes. Belen Fadrique leads our analysis in @natecoevo.nature.com w/ 400 plots + 40 years of RAINFOR records. www.nature.com/articles/s41... Hot, drier, more fragmented forests are losing species. Many in the Andes + western Amazon are gaining them.
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Proceedings of the National Academy of Sciences @pnas.org · 16/12/2025
Land-use change is the main cause of deforestation in the Amazon, but the risk of abrupt forest decline, along with its potentially devastating consequences, increases as the planet warms, with a strong nonlinear trend beyond 2.3° C of warming. In PNAS: ow.ly/6Prr50XKAN1
Aerial view of Amazon rainforest tree canopy.
CREDIT: Philippe Ciais
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Journal of Ecology @journalofecology.bsky.social · 08/12/2025
Published!📖 Forest structural and functional diversity can attenuate forest productivity losses after harvesting and fires. In undisturbed forests, dominance boosts productivity via selection effects, but not after harvesting🌳🌲🌍 Read here:https://buff.ly/Gw5Hq6X
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Nature Ecology & Evolution @natecoevo.nature.com · 08/12/2025
Global analysis shows that atmospheric dryness explains geographical patterns of tree canopy height and is projected to become more important in the coming decades: www.nature.com/articles/s41...
nature.com
Global dependency of canopy height on vapour pressure deficit and its projections under climate change - Nature Ecology & Evolution
Rising atmospheric aridity may be an important driver of tree growth. Here the authors present analyse the global relationship between tree canopy height and vapour pressure deficit, and its potential...
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Dr Christopher F Clements @expecocons.bsky.social · 26/11/2025
🌍📢 Postdoc alert | 3-yr starting early 2026 Please 🔁! Understand how ecosystem stability is changing across space and through time using niche modelling, pinpoint at-risk species/regions, and build tools that drive conservation action🌿🧭📈 👉 tinyurl.com/2mafwru3 #Ecology #Jobs #Biodiversity
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Journal of Applied Ecology @jappliedecology.bsky.social · 24/11/2025
We're currently looking for new Associate Editors to join our Editorial Board! 🌎🧪 If you're interested in contributing to the publishing landscape, check out the link below 👇 www.britishecologicalsociety.org/content/appl...
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Pieter Zuidema @pieterzuidema.bsky.social · 24/11/2025
Extra CO2 stimulates #photosynthesis of trees and reduces water losses through transpiration. But does that stimulate growth of #tree stems? Our paper today in NatClimateChange led by Quan Zhang uses theory & data to show that strong growth stimulation is unlikely.🌎🌐🍁 www.nature.com/articles/s41...
nature.com
Increased efficiency of water use does not stimulate tree productivity - Nature Climate Change
The authors theoretically delineate the maximal increases in tree growth that can be expected from increases in plant intrinsic water-use efficiency, which increases with rising CO2. They highlight en...
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Florian Hartig @florianhartig.bsky.social · 13/11/2025
We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist. For more information, see www.uni-regensburg.de/universitaet...
uni-regensburg.de
We are hiring: 4 PhD Positions in Ecology / Data Science and one Ecological Data Scientist
We are looking for 4 PhD Positions and one Scientific Programmer / Ecological Data Scientist to join the AG Hartig (Theoretical Ecology)
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Elisabet Martínez-Sancho @elimartinezs.bsky.social · 05/11/2025
🚨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
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Brian J. Enquist @bjenquist.bsky.social · 21/10/2025
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🧪🌐🌾
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New Phytologist @newphyt.bsky.social · 23/10/2025
#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
Simulated and observed annual mature forest turnover time and woody biomass increment flux at a boreal, temperate and tropical site.
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Pieter Zuidema @pieterzuidema.bsky.social · 23/10/2025
🎉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. 🌎🍁
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Emilio Vilanova @evilanova.bsky.social · 20/10/2025
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/...
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Journal of Ecology @journalofecology.bsky.social · 19/10/2025
🪵 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
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Pieter Zuidema @pieterzuidema.bsky.social · 17/10/2025
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...
nature.com
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...
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Communications Earth & Environment @commsearth.nature.com · 15/10/2025
🪵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...
nature.com
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...
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Dario Martin-Benito @dendroecologist.bsky.social · 23/09/2025
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
onlinelibrary.wiley.com
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...
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Andy Gonzalez @bio-diverse.bsky.social · 24/09/2025
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
royalsocietypublishing.org
Philosophical Transactions of the Royal Society B: Biological Sciences: Vol 380, No 1917
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Timo Conradi @timoconradi.bsky.social · 25/09/2025
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
nature.com
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.
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Pieter Zuidema @pieterzuidema.bsky.social · 18/09/2025
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...
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Journal of Applied Ecology @jappliedecology.bsky.social · 05/09/2025
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...
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Rupert Seidl @rupertseidl.bsky.social · 02/09/2025
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...
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Journal of Forestry Research @forestryjfr.bsky.social · 28/08/2025
🌱 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 🧪🌏🌐🍁🌺🌱🌿🦤
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Osbert Sun @osbertsun.bsky.social · 29/08/2025
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...
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Pieter Zuidema @pieterzuidema.bsky.social · 29/08/2025
#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/...
besjournals.onlinelibrary.wiley.com
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...
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Journal of Ecology @journalofecology.bsky.social · 21/08/2025
⛰️🌳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
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Charlotte Grossiord @charlottegrossiord.bsky.social · 14/08/2025
🌳🔥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/...
onlinelibrary.wiley.com
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 ...
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Jonathan Myers @jamyersecology.bsky.social · 19/08/2025
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/...
pnas.org
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...
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Journal of Forestry Research @forestryjfr.bsky.social · 20/08/2025
🌳 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 🌏🌐🍁🌺🌱🌿🦤
link.springer.com
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....
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Nature Microbiology @natmicrobiol.nature.com · 08/08/2025
#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...
nature.com
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...
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Julia Koricheva @juliakoricheva.bsky.social · 11/08/2025
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... 🍁🌍🧪
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Journal of Forestry Research @forestryjfr.bsky.social · 11/08/2025
🌲 How does thinning influence the #carbon balance in upland vs peatland forests? Thanks to @holisoils.bsky.social for shedding light on how #ForestManagement affects different soil types. #ForestryResearch #ClimateAction #SoilScience #JFR 🧪🌏🌐🍁🌺🌱🌿🦤
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Markus Eichhorn @markuseichhorn.bsky.social · 06/08/2025
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...
Fig. 1 from Holvoet et al. (2025). TLS and MLS scan setup, point cloud segmentation, and pre-processing.
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Journal of Ecology @journalofecology.bsky.social · 07/08/2025
🌴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
besjournals.onlinelibrary.wiley.com
Reassembly dynamics of tropical secondary succession: Evidence from Atlantic forests
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Dr. Joan Dudney @dudney-joan.bsky.social · 06/08/2025
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! 🧪🌏🌐🍁🌺🌱🌿🔥
Six field researchers in Yosemite National Park celebrating a fun day of work in the Mariposa Grove
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Nature Portfolio @natureportfolio.nature.com · 05/08/2025
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 🧪
Fig. 1: Extreme regional fire years across forested areas during 2002–2023.
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Markus Eichhorn @markuseichhorn.bsky.social · 01/08/2025
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: 🌳🌲🌏
jobs.bangor.ac.uk
Job Details | Bangor University Jobs
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Pieter Zuidema @pieterzuidema.bsky.social · 31/07/2025
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... 🌍🍁🌐 (1/4)
doi.org
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...
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Journal of Applied Ecology @jappliedecology.bsky.social · 31/07/2025
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
bit.ly
Senior Editor for Journal of Applied Ecology - British Ecological Society
Join the editorial board on Journal of Applied Ecology! Apply by 07 Sep 2025.
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Pieter Zuidema @pieterzuidema.bsky.social · 28/07/2025
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...
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Pieter Zuidema @pieterzuidema.bsky.social · 22/07/2025
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...
sciencedirect.com
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…
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Dominic Martin @dominic-martin.bsky.social · 16/07/2025
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/...
eur03.safelinks.protection.outlook.com
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
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