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Valentin Journé

@valentinjourne.bsky.social
1.2K followers 413 following 20 posts

Functional ecology, forests, tree reproduction, species distribution Assistant professor at Kyushu University journevalentin.wixsite.com/forestec…

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Reposted by Valentin Journé
FRB|Fondation pour la recherche sur la biodiversité @frbiodiv.bsky.social · 17/07/2026
[Press release🌍] Could social behaviour help explain why some countries protect more land than others? That's what a new study by Cathleen Petit, @valentinjourne.bsky.social & Etienne Dagorn, published in Biological Conservation, explores 👇 bit.ly/4vBznTR 🧪🌐FRB/MTE/ @ofbiodiversite.bsky.social
bit.ly
Beyond economic factors: The role of social behaviour in the establishment of protected areas - Fondation pour la recherche sur la biodiversité
Collective behaviour as an explanatory factor The researchers analysed data from 71 countries by combining international surveys on human behaviour with geographic data on protected areas. Four behavi...
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Valentin Journé @valentinjourne.bsky.social · 07/07/2026
Can the Human dimension contribute to explaining differences in protected area coverage? This is the question we asked in our last article here in Biological Conservation doi.org/10.1016/j.bi...
Picture view from Isthmus Peak, NZ
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New Phytologist @newphyt.bsky.social · 15/05/2026
Intra-annual imprint of hydrogen and oxygen isotope signals in tree rings 📖 nph.onlinelibrary.wiley.com/doi/10.1111/... by Diao et al. @WileyPlantSci #PlantScience #TreeRings
Intra-annual radial growth of beech and spruce in 2021 and 2022.
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New Phytologist @newphyt.bsky.social · 06/05/2026
Despite rapid warming, seed production is not leading poleward migration in North American and European forests Clark et al. @frodsan.bsky.social @andrewhacket-pain.bsky.social @rolandkays.com @valentinjourne.bsky.social nph.onlinelibrary.wiley.com/share/NRGUJA...
Climate norms and trends that affect tree fecundity for 15 years (2010 to 2024).
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The Tiny Bearrister @sherimander.bsky.social · 07/11/2025
The DNA pioneer is Rosalind Franklin.
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Elisabet Martínez-Sancho @elimartinezs.bsky.social · 21/08/2025
🚨 Check out our new study! 🌳🥶 Tree rings show that high-elevation beech forests are experiencing more spring frost damage in recent years @newphyt.bsky.social @yannvit.bsky.social #Phenology #Dendrochronology doi.org/10.1111/nph....
doi.org
Emerging trend of increasing spring frost damage for beech at higher elevations in the Jura Mountains: evidence from tree‐ring data
Late spring frost (LSF) severely impacts tree growth and forest productivity, with global warming potentially altering LSF risk due to asymmetric changes in vegetation onset and frost timing. Howeve.....
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Dr. Emily G Simmonds @emilygsimmonds.bsky.social · 22/10/2025
PhD advert alert! Come work with me at Edinburgh. I'm advertising a PhD on: "Predicting responses of birds to climate change", competition funded through the E5 DTP. Would suit those with an interest in predicting responses to climate change, birds, or both. e5-dtp.ed.ac.uk/project?item...
alt="Schematic of a graph of a population trajectory for blue tits that is known for half of the x-axis (time) and then forecasted with uncertainty. Above the population trajectory are some weather images (a sun and some rain) they have connections to the population size but the path is unknown. "
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Mona Chollet @monachollet.bsky.social · 22/10/2025
À Rafah il y a deux jours : Israël continue de détruire des maisons palestiniennes bsky.app/profile/anti...
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Valentin Journé @valentinjourne.bsky.social · 20/10/2025
Happy to share our last study published in @natcomms.nature.com We asked Can the weather tell trees when it’ is time to reproduce? www.nature.com/articles/s41...
Picture of Japanese pine
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Charlotte Grossiord @charlottegrossiord.bsky.social · 20/08/2025
New PhD position in Plant Ecophysiology🌳 Study how atmospheric & soil drought shape tree carbon & water relations at the VPDrought experiment in Switzerland. Start Jan 2026. Apply here: m.refline.ch/273855/1759/... @wslresearch.bsky.social
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Dr. Joan Dudney @dudney-joan.bsky.social · 14/08/2025
Really excited to share our new paper on #causalinference & #climatechange attribution out in #EcologyLetters today! Are you asking "how much" or "if" climate change has impacted your system, then this paper is for you! 🧪🌏🌐🍁🌺🌱🌿 onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
A Causal Inference Framework for Climate Change Attribution in Ecology
Accurately attributing ecological shifts to climate change remains a significant challenge. Here, we present an accessible causal inference framework designed for climate change attribution in observ...
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Michal Bogdziewicz @micbog.bsky.social · 19/08/2025
🚨 Postdoc opening 🚨 Join us at Forest Biology Center (Poznań, Poland) to study forest ecology under climate change. 2-year contract (extendable), start Jan 2026 (flexible). Apply by Sept 30, 2025. 🔗 forestbiologycenter.amu.edu.pl/our-team/joi...
forestbiologycenter.amu.edu.pl
Forest Biology Center - Adam Mickiewicz University in Poznań, Poland
Centrum Biologii Lasu Uniwersytetu im. Adama Mickiewicza w Poznaniu
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Une femme-pastèque @benecologie.bsky.social · 06/07/2025
Ce que les soc-dem appellent "casseurs" sont fort probablement des manifestant.e.s comme les autres qui protègent des violences de la police, qui s'attaquent aux symboles d'un capitalisme qui nous tue collectivement et mettent hors d'état de nuire des activités destructrices.
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Methods in Ecology and Evolution @methodsinecoevol.bsky.social · 19/06/2025
Check out our latest blog post!! Xiaojie Gao gives us the story behind their paper and the newly published pnetr R package, used for forest ecosystem modelling 🌳 Read the blog post here 👇 buff.ly/oKTtoJh
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WSL Umweltforschung @wslresearch.bsky.social · 14/05/2025
🌲🖥️ #PhDAlert! MSc in a #natural #science & experience with #tree-ring analysis and statistical software (R)? Fluent in English and ready for #fieldwork? Our #forest dynamics #research unit is looking for a #PhD candidate in #dendroecology and #ecophysiology! apply.refline.ch/273855/1736/...
PhD candidate in Dendroecology and Ecophysiology
The project involves fieldwork, lab analyses and manipulative experiments. The research sites are located in the Alps (Switzerland), Pyrenees (Spain), and Carpathians (Romania), and the experimental study will be conducted in Switzerland. You will apply dendroecological techniques to measure and analyse carbon and oxygen isotope ratios in the cellulose of tree rings as proxies of physiological changes. Additionally, you will participate in an experimental study on saplings growing along an elevational transect in the Alps, examining their morphological, physiological, and phenological responses to climate stressors (heat, drought, and frost). Ultimately, the goal is to rank species by their sensitivity to recent and future climatic stressors, helping forest managers select the most resilient species for each elevation zone.
You hold a Master’s degree in forest ecology, ecology, plant physiology, environmental science, or a related field. Ideally, you already have experience with tree-ring analysis, ecophysiology, or climate data analysis. You have a good command of English, enjoy working collaboratively, and are comfortable using statistical software, preferably R. You are in good physical condition so that you can move safely over rough terrain. In addition, you are independent, self-motivated, and eager to take on a challenging project that will contribute to a deeper understanding of how climate change affects forest ecosystems. This position offers an exciting opportunity for those seeking a career in dendroecology, ecophysiology, or climate change science. You will work in an international research environment with access to cutting-edge methods and collaboration opportunities in Spain and Romania. Working place will be at WSL in Birmensdorf (approx. 20 min outside of Zurich); PhD enrolment will be at University of Bern.
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Carlos P Carmona @cpcarmona.bsky.social · 02/04/2025
Excited to announce our new paper, “Global impoverishment of natural vegetation revealed by dark diversity,” out today in Nature – and it’s open access! Huge global collaboration led by Meelis Pärtel 🌐@macroecologyut.bsky.social www.nature.com/articles/s41...
nature.com
Global impoverishment of natural vegetation revealed by dark diversity - Nature
A comparison of alpha diversity (number of plant species) and dark diversity (species that are currently absent from a site despite being ecologically suitable) demonstrates the negative effects of re...
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Milan Chytrý @milanchytry.bsky.social · 02/04/2025
🌿 The first article of our DarkDivNet consortium, led by Meelis Pärtel, has been published in Nature. Our dataset from 5500 sites in 119 world regions, collected specially for this purpose, shows that plant diversity is negatively affected not only by direct human impact such as local disturbance.
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Rebecca Sear @rebeccasear.bsky.social · 02/04/2025
"from 1965 to 2020, nearly half the variation in publication trends among 293 North American male passerine & near-passerine birds was explained by 3 factors subject to human bias: aesthetic salience (visual appeal), range size (familiarity) & number of universities within ranges (accessibility)"
royalsocietypublishing.org
Six-decade research bias towards fancy and familiar bird species | Proceedings of the Royal Society B: Biological Sciences
Human implicit biases towards visually appealing and familiar stimuli are well documented and rooted in our brains’ reward systems. For example, humans are drawn to charismatic, familiar organisms, bu...
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Trends in Ecology & Evolution @cp-trendsecolevo.bsky.social · 03/03/2025
Online now: Shifting, expanding, or contracting? Range movement consequences for biodiversity
dlvr.it
Shifting, expanding, or contracting? Range movement consequences for biodiversity
Climate change is causing species ranges to shift, expand, and contract, with divergent and underappreciated consequences for local and global biodiversity. Widespread range shifts should increase local diversity in most areas but reduce it in the…
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Proceedings of the National Academy of Sciences @pnas.org · 11/02/2025
Warmer summers are causing European beeches to produce seed more often, depleting the trees’ stored resources—an indirect effect of climate change that is threatening the sustainability of Europe’s most widespread forest tree. In PNAS: www.pnas.org/doi/10.1073/...
Branch of beech tree, Fagus sylvatica, with nuts and green leaves.
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Rupert Seidl @rupertseidl.bsky.social · 24/02/2025
Interesting work by van der Meersch et al. out in Ecology Letters, nicely illustrating that process-based models are more robust than correlative models for predicting species distributions under novel climatic conditions doi.org/10.1111/ele....
doi.org
Paleorecords Reveal Biological Mechanisms Crucial for Reliable Species Range Shift Projections Amid Rapid Climate Change
Climate change has created an urgent need for reliable projections of species distributions. By hindcasting forest tree range shifts across Europe over the last 12,000 years, we show that process-exp...
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Dr Simon Goodman @phoca-sapiens.bsky.social · 31/01/2025
Papers like this really underscore the importance of long term monitoring datasets for understanding climate change impacts on biodiversity... And highlight the dire consequences of even modest temperature increases. 🧪🌍🦤🦜 www.science.org/doi/10.1126/...
science.org
Climate change aggravates bird mortality in pristine tropical forests
Climate change threatens Amazon rainforest birds, with harsher dry seasons significantly affecting their survival over 27 years.
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Michal Bogdziewicz @micbog.bsky.social · 04/02/2025
Our paper that showed alternations in masting patterns are leading to growth decline in European beech is now in @PNASNews, as a part of highlighted content; check out that summary! :) Funded by @NCN_PL www.pnas.org/doi/10.1073/...
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Valentin Journé @valentinjourne.bsky.social · 07/02/2025
Interested by tree growth, resources allocation and climate change? Have a look in our last study! We showed how tree reproduction is impacting tree growth,. AND... not only drought is responsible of a growth reduction 🤯
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Anne Baranger @annebaranger.bsky.social · 03/12/2024
Really pleased to announce the publication of my PhD paper in @ecography.bsky.social ! We demonstrate the importance of physiological tolerance traits to frost and drought in understanding the distribution limits of 35 tree species in Europe.🧵 nsojournals.onlinelibrary.wiley.com/doi/10.1111/...
nsojournals.onlinelibrary.wiley.com
Living on the edge – physiological tolerance to frost and drought explains range limits of 35 European tree species
Species distribution models are key to evaluate how climate change threatens European forests and tree species distributions. However, current models struggle to integrate ecophysiological processes....
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Patrick Weigelt @patrickweigelt.bsky.social · 01/12/2024
Phylogenetic turnover of seed plants 🌱 at a global 🌐 and across phylogenetic scales: www.nature.com/articles/s41...
nature.com
Environmental filtering, not dispersal history, explains global patterns of phylogenetic turnover in seed plants at deep evolutionary timescales - Nature Ecology & Evolution
This modelling study integrates comprehensive regional plant inventories, environmental conditions and palaeogeographical reconstructions to assess the relative roles of environmental filtering and di...
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Prof Sam Illingworth @samillingworth.com · 05/12/2024
🌍📉 Climate change is driving mass extinctions A new meta-analysis in @science.org spanning 30+ years shows 1.6% of ALL species are at risk at 1.3°C warming, rising to 29.7% at 5.4°C. This is very very bad. When will we wake up? 🔗 www.science.org/doi/10.1126/... 🧪🍎 #ClimateCrisis #SciComm
science.org
Climate change extinctions
Climate change is expected to cause irreversible changes to biodiversity, but predicting those risks remains uncertain. I synthesized 485 studies and more than 5 million projections to produce a quant...
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Michal Bogdziewicz @micbog.bsky.social · 03/12/2024
As we approach winter solstice, remember that European beech uses summer solstice to coordinate its masting events all across Europe! Beech seeding is triggered by high summer temps, and all trees across the range measure that after 21st of June. MIND BOGGLING. www.youtube.com/watch?v=_Rye...
youtube.com
Nature Plants: summer solstice and mast seeding
YouTube video by Michał Bogdziewicz
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Andrew Hacket-Pain @andrewhacket-pain.bsky.social · 27/11/2024
🚨 Funded PhD opportunity: forests & climate change Drought reduces growth, triggers dieback & can kill trees, but how does it affect tree reproduction? Help us answer this question! Join a great team in Liverpool & Kew, inc. @belenfadrique.bsky.social 🌳🌱🌲 Deadline = Jan Info: tinyurl.com/3z9z3ad6
Fagus sylavtica flowering
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Jalene LaMontagne @jalene-lamontagne.bsky.social · 17/11/2024
Here's a Mast Seeding Starter Pack. I'm sure I've missed some folks, so let me know if you study masting and want to be added. 🌳 🌲 go.bsky.app/PbBBbuW
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Valentin Journé @valentinjourne.bsky.social · 01/11/2024
New study we published recently in Ecology Letters :) The Relationship Between Maturation Size and Maximum Tree Size From Tropical to Boreal Climates dx.doi.org/10.1111/ele....
dx.doi.org
The Relationship Between Maturation Size and Maximum Tree Size From Tropical to Boreal Climates
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Nicolas Mouquet @nmouquet.bsky.social · 12/03/2024
As director of CESAB, I'm incredibly proud to share the latest article of our postdocs today in Ecology Letters. 👏 They call for a more ethical academic publishing landscape but also ask to not let only the Early Career Researchers pay the price of this paradigm shift ! doi.org/10.1111/ele.... 🧪🌍
The publish-or-perish culture in academia has catalysed the development of an unethical publishing system. This system is characterised by the proliferation of journals and publishers unaffiliated with learned societies or universities— that maintain extremely large revenues and profit margins diverting funds away from the academic community. Early career researchers (ECRs) are particularly vulnerable to the consequences of this publishing system because of intersecting factors, including pressure to pursue high impact publications, rising publication costs and job insecurity. Moving towards a more ethical system requires that scientists advocate for structural change by making career choices that come with risks, many of which disproportionately impact ECRs. We illuminate major issues facing ECRs in Ecology and Evolution under the current publishing system, and propose a portfolio of actions to promote systemic change that can be implemented by ECRs and established researchers.
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