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Weiwei Zhan

@weiweizhan.bsky.social
95 followers 101 following 8 posts

PhD student @Columbia | visiting student @CarnegieEcology | vegetation-climate interactions 🌎| photosynthesis 🌱| machine learning

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Reposted by Weiwei Zhan
Ben Bond-Lamberty @benbondlamberty.bsky.social · 03/12/2025
"Overlooked and extensive ghost forest formation across the US Atlantic coast" -- wow what a comprehensive analysis by Yeung, @xiyang.bsky.social et al. 🎉 www.nature.com/articles/s41...
nature.com
Overlooked and extensive ghost forest formation across the US Atlantic coast - Nature Sustainability
Large swathes of standing dead trees or ‘ghost forests’ can form owing to rising sea levels in coastal areas, but the extent to which this occurs is unclear. This study maps ghost forests at the indiv...
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Jeff Dukes @dukesjeff.bsky.social · 05/11/2025
Just published this new paper, with a bunch of fantastic colleagues, with many suggestions for "Improving the representation of plant water stress and water use in Earth System Models." Access is free online. We have some great figures, thanks to Victor Leshyk. 🧪🌐🌳🌎
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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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LEMONTREE @lemontree-uofr.bsky.social · 15/08/2025
📢Just out! A new paper by the team in @pnas.org : Observed declines in leaf nitrogen explained by photosynthetic acclimation to CO2! www.pnas.org/doi/10.1073/... Maoya Bassiouni, @nickgregsmith.bsky.social @trevorkeenan.bsky.social et al.
pnas.org
Observed declines in leaf nitrogen explained by photosynthetic acclimation to CO2 | PNAS
Widespread evidence of decreasing leaf nutrients has raised concerns about ecosystem productivity under global change. Interpreting trends in leaf ...
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Weiwei Zhan @weiweizhan.bsky.social · 16/07/2025
What a wonderful surprise to see our work reflected in a commentary that so clearly "gets it". Thank you so much @juergenknauer.bsky.social !
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Nature Ecology & Evolution @natecoevo.nature.com · 15/07/2025
A machine learning approach using long-term observations of eddy covariance finds that the increase in plant intrinsic water-use efficiency under higher CO2 is driven primarily by reduction in canopy conductance, rather than stimulation of gross primary productivity www.nature.com/articles/s41... 🧪
nature.com
Reduced water loss rather than increased photosynthesis controls CO2-enhanced water-use efficiency - Nature Ecology & Evolution
A machine learning approach using long-term observations of eddy covariance finds that the increase in plant intrinsic water-use efficiency under higher CO2 levels, across diverse ecosystems, is drive...
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Jürgen Knauer @juergenknauer.bsky.social · 14/07/2025
What a pleasure to write a News & Views piece on this intriguing article that found surprising insights into WUE trends --> www.nature.com/articles/s41...
nature.com
Water-use efficiency driven by water savings - Nature Ecology & Evolution
Analysis of land–atmosphere water and CO2 fluxes suggests that reduced water use by vegetation, rather than increased carbon uptake, is the driving factor behind the well-documented increase in vegeta...
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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 12/07/2025
For a recent review see www.nature.com/articles/s43... "Both short-duration and long-duration (>1 day) rainfall extremes are intensifying with warming at a rate consistent with the increase in atmospheric moisture" (~7% per degree C), but some local convective rainfall events increase even more. 5/5
nature.com
Anthropogenic intensification of short-duration rainfall extremes - Nature Reviews Earth & Environment
Short-duration rainfall extremes are determined by complex processes that are affected by the warming climate. This Review assesses the evidence for the intensification of short-duration rainfall extr...
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Nature Plants @natplants.nature.com · 08/07/2025
New Article: "When and where soil dryness matters to ecosystem photosynthesis" rdcu.be/evfGV A causality-guided explainable AI framework shows soil moisture dominates vapour pressure deficit in shaping global photosynthesis during water-limited conditions.
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Reposted by Weiwei Zhan
Pierre Gentine @pierregentine.bsky.social · 12/07/2025
Delighted to share our new paper "Reduced water loss rather than increased photosynthesis controls CO2-enhanced water-use efficiency: www.nature.com/articles/s41... , which demonstrates the strongly detectable impact of CO2 fertilization on canopy and stomata conductance,
lnkd.in
LinkedIn
This link will take you to a page that’s not on LinkedIn
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Weiwei Zhan @weiweizhan.bsky.social · 11/07/2025
Interested in how plant intrinsic water-use efficiency (iWUE) responds to rising CO2? Our new paper shows that CO2-enhanced iWUE is mainly driven by reduced canopy conductance, while stimulation of ecosystem photosynthesis is less detectable given current data length. www.nature.com/articles/s41...
nature.com
Reduced water loss rather than increased photosynthesis controls CO2-enhanced water-use efficiency - Nature Ecology & Evolution
A machine learning approach using long-term observations of eddy covariance finds that the increase in plant intrinsic water-use efficiency under higher CO2 levels, across diverse ecosystems, is drive...
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Reposted by Weiwei Zhan
Liangzhi Chen @liangzhi-chen.bsky.social · 08/07/2025
This species-specific study and another latest out global analyses www.nature.com/articles/s41... converge to the same conclusion: enhanced tree/forest growth by the global warming cannot offset the negative impacts causes by disturbances, such as droughts.
nature.com
Seasonal stabilization effects slowed the greening of the Northern Hemisphere over the last two decades - Nature Communications
Rising CO₂ and warming enhance vegetation greening, but drought, heat stress, and resource limits constrain this trend. Here, the authors show that within a year, increased early- and peak- season gre...
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Huanyuan Zhang-Zheng @h-zhang.bsky.social · 10/07/2025
This was the first chapter of my PhD but we spent a long long time on reviewing and revising (which indeed greatly improved the quality). This is where we need nice supervisors and coauthors who keep encouraging me regardless of peer criticism and rejection! Also C.Bio. has very good author service!
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Jiangong Liu @jiangong-liu.bsky.social · 09/07/2025
Our new paper is out on Nature Plants! We found that soil moisture contributes more to ecosystem photosynthesis than VPD for the water-limited periods and water-limited locations, using causality-guided explainable AI. www.nature.com/articles/s41...
nature.com
When and where soil dryness matters to ecosystem photosynthesis - Nature Plants
Using a causality-guided explainable AI framework, Liu et al. show soil moisture dominates vapour pressure deficit in shaping global photosynthesis during water-limited conditions.
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Pierre Gentine @pierregentine.bsky.social · 08/07/2025
Excited to share our new paper "When and where soil dryness matters to ecosystem photosynthesis" www.nature.com/articles/s41..., which resolves a long-standing debate as to whether soil moisture or atmospheric dryness dominates water stress response.
nature.com
When and where soil dryness matters to ecosystem photosynthesis - Nature Plants
Using a causality-guided explainable AI framework, Liu et al. show soil moisture dominates vapour pressure deficit in shaping global photosynthesis during water-limited conditions.
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Ben Bond-Lamberty @benbondlamberty.bsky.social · 20/06/2025
Traditionally ESMs didn't actively model human decision-making, but just published today: "E3SM-GCAM: A Synchronously Coupled Human Component in the E3SM Earth System Model Enables Novel Human-Earth Feedback Research" by Alan Di Vittorio et al.! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
E3SM‐GCAM: A Synchronously Coupled Human Component in the E3SM Earth System Model Enables Novel Human‐Earth Feedback Research
We have incorporated a novel, advanceable human component in an Earth system model to simulate human-Earth feedbacks Including terrestrial productivity feedbacks from the Earth to the human syste...
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Reposted by Weiwei Zhan
LEMONTREE @lemontree-uofr.bsky.social · 19/06/2025
🌍New paper out today!!! Global variation in vegetation carbon use efficiency inferred from eddy covariance observations @xiangzluo.bsky.social @natureportfolio.nature.com 🔗👇 www.nature.com/articles/s41...
nature.com
Global variation in vegetation carbon use efficiency inferred from eddy covariance observations - Nature Ecology & Evolution
The efficiency with which plants use carbon assimilated through photosynthesis has a key role in determining natureʼs capacity to offset carbon dioxide emissions. This study leverages global eddy cova...
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Pierre Gentine @pierregentine.bsky.social · 17/06/2025
Excited to share our new Nature Geoscience paper on how persistent Rossby waves patterns are triggering simultaneous hot-dry extremes across western Europe, Asia, and the U.S., severely reducing vegetation productivity and carbon uptake. www.nature.com/articles/s41...
nature.com
Northern ecosystem productivity reduced by Rossby-wave-driven hot–dry conditions - Nature Geoscience
Satellite observations suggest that prolonged hot–dry conditions induced by Rossby waves in the jet stream reduce ecosystem productivity, providing insights into the potential impacts of a future warm...
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Jeff Dukes @dukesjeff.bsky.social · 06/06/2025
How do dominant plants' functional traits affect biomass responses to global change? New paper by Mingyan Hu et al uses the large Manipulation Experiments Synthesis Initiative (MESI) database to find out. besjournals.onlinelibrary.wiley.com/doi/epdf/10....
besjournals.onlinelibrary.wiley.com
Plant functional traits affect biomass responses to global change: A meta‐analysis
The positive effects of elevated nutrient on belowground biomass were more pronounced for communities dominated by “fast” species. In communities dominated by arbuscular mycorrhizal fungi-associated ...
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Ben Bond-Lamberty @benbondlamberty.bsky.social · 11/06/2025
Now online: "Permafrost, Peatland, and Cropland Regions Are Key to Reconciling North American Carbon Sink Estimates" by Kelsey Foster et al., including @avnimalh0tra.bsky.social w/ Stanford, PNNL, NAU, and NRC colleagues agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Permafrost, Peatland, and Cropland Regions Are Key to Reconciling North American Carbon Sink Estimates
Additional sink inferred by inversions in just 16% of North America accounts for the discrepancy between top-down and bottom-up estimates Statistically significant differences between top-down an...
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Weiwei Zhan @weiweizhan.bsky.social · 05/04/2025
Wanna learn how to partition CO2 fluxes using ML and SIF? 🌱🤖 Come join me on April 8 - it's a talk ➕ a hands-on coding session!
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Reposted by Weiwei Zhan
Nick Smith @nickgregsmith.bsky.social · 28/03/2025
New pub out in @annbot.bsky.social led by Astrid Ode titled "Temporal constraints on leaf-level trait plasticity for next-generation land surface models" We critically examine timescales of trait-environment responses Have a look! @lemontree-uofr.bsky.social academic.oup.com/aob/advance-...
academic.oup.com
Temporal constraints on leaf-level trait plasticity for next-generation land surface models
AbstractBackground and aims. Dynamic global vegetation models (DGVMs) are essential for quantifying the role of terrestrial ecosystems in the Earth’s clima
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Reposted by Weiwei Zhan
FLUXNET Early Career Network @fluxnetecn.bsky.social · 27/03/2025
The FLUXNET Early Career Network (FLUXNET-ECN) is excited to announce “Bridging the Gap: Flux Data Meets Land Surface Models”, a three-day in-person workshop August 6-8th, 2025 focused on integrating flux data for validating and parameterizing land surface models.
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Li Li (李黎) @lireactivewater.bsky.social · 31/03/2025
eartharxiv.org/repository/v... Can we develop a global #deeplearning #model for daily Soil CO2 efflux? Results show - #LSTM models can use existing data to generate synthetic data for temperate mesic regions - challenges of transferring relationships learned from data-rich to data-poor sites
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Antoine Champreux @toinechampreux.bsky.social · 28/03/2025
🌲🌳🌐 New study reminds us that forests act globally as a #carbon sink Between 2001 and 2023, the world's #forests have absorbed 5.5 gigatonnes more #CO2 than they have emitted on average each year. 👉 Gibbs et al. dx.doi.org/10.5194/essd... 🧪
Figure 3 from the paper of Gibbs et al (2025) showing three maps respectively representing the amounts of greenhouse gas emmisions, removal, and net flux.

Caption from the paper: Forest-related GHG fluxes (annual average, 2001–2023). (a) Gross GHG emissions. (b) Gross CO2 removals. (c) Net GHG flux. Fluxes are aggregated to 0.04×0.04° (approximately 4×4 km) cells for display purposes. Publisher's remark: please note that the above figure contains disputed territories.
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Ben Bond-Lamberty @benbondlamberty.bsky.social · 27/03/2025
A global meta-analysis of soil respiration in response to elevated CO2 www.sciencedirect.com/science/arti...
sciencedirect.com
A global meta-analysis of soil respiration in response to elevated CO2
Soil respiration (Rs) is a crucial component of the terrestrial ecosystem carbon (C) cycle, which significantly regulates atmospheric CO2 concentratio…
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NOAA Climate.gov @climate.noaa.gov · 27/03/2025
Did the winter 2024-25 La Niña precipitation pattern perform as predicted? To find out, we compared observed conditions to two ENSO-monitoring indices. See how we did in our newest ENSO blog post! www.climate.gov/news-feature...
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LEMONTREE @lemontree-uofr.bsky.social · 25/03/2025
📣📖New paper out in @newphyt.bsky.social🌿 "Soil resource acquisition strategy modulates global plant nutrient and water economics" by @alissarcheaib.bsky.social @nickgregsmith.bsky.social & @eaperkowski.bsky.social 🔗 Read it here: nph.onlinelibrary.wiley.com/doi/10.1111/... #EEO #LEMONTREE
nph.onlinelibrary.wiley.com
Soil resource acquisition strategy modulates global plant nutrient and water economics
Natural selection favors growth by selecting a combination of plant traits that maximize photosynthetic CO2 assimilation at the lowest combined carbon costs of resource acquisition and use. We quant...
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Christian Frankenberg @cfranken.bsky.social · 23/03/2025
Recent gains in global terrestrial carbon stocks are mostly stored in nonliving pools | Science www.science.org/doi/10.1126/...
science.org
Recent gains in global terrestrial carbon stocks are mostly stored in nonliving pools
Terrestrial sequestration of carbon has mitigated ≈30% of anthropogenic carbon emissions. However, its distribution across different pools, live or dead biomass and soil and sedimentary organic carbon...
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Professor Chuixiang (Tree) Yi at City University of New York @cyi12.bsky.social · 21/03/2025
Our perspective paper on resilience and tipping points is now out! We outline key principles to guide future research on these critical topics, from dynamical systems to real-world applications. iopscience.iop.org/article/10.1... #Resilience #TippingPoints #Ecology
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Image and Signal Processing • ISP @isp-uv-es.bsky.social · 21/03/2025
⬇️ New paper! ⬇️ "Large Language Models for Causal Hypothesis Generation in Science" Can LLMs help uncover hidden causal patterns? This paper explores how AI, data-driven methods, and expert knowledge can work together to unlock discoveries! 🚀 🔗 tr.ee/LargeLanguag...
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Bill Smith @wkolby.bsky.social · 27/01/2025
Happy to share a new @newphyt.bsky.social paper, "Proximal remote sensing: an essential tool for bridging the gap between high-resolution ecosystem monitoring and global ecology," led by the amazing Zoe Pierrat w/ the broader #SpecNet community. nph.onlinelibrary.wiley.com/doi/10.1111/...
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