Dr. Joan Dudney
banner
dudney-joan.bsky.social
Dr. Joan Dudney
@dudney-joan.bsky.social

Assistant Professor @ucsantabarbara Global Change Forest Ecologist @switzernetwork @SmithFellows @PeaceCorps #BLM

Environmental science 80%
Geography 20%
Pinned
Thrilled our #AREES review on #Disturbance #Interactions is out! #ClimateChange = MAJOR DISRUPTER, but not how you’d expect 👀

#NewFramework: #CC effects on interactions🧪🌐🍁🌱
HUGE🙏4 legendary efforts: @rupertseidl.bsky.social @brian-j-harvey.bsky.social @julieedtree.bsky.social

tinyurl.com/3p97ztr5

Reposted by Joan Dudney

Study area shape matters when tracking species range shifts & we may underestimate longitudinal range shifts to the benefit of latitudinal range shifts, potentially undermining drivers other than T°C 🌡

🌐🌏🌎🌍🧪🐠🐍🦋🦉🦇🌳🌲

shorturl.at/prp63
Global bias towards recording latitudinal range shifts - Nature Climate Change
The authors consider studies reporting species range shifts and demonstrate a geometric bias in sampling along latitudinal, rather than longitudinal, gradients. This bias may favour the corroboration ...
shorturl.at

Reposted by Joan Dudney

Our new study—part of the forthcoming book Andean #Herpetofauna—explores how #amphibian diversity and threats shift across the elevational zones of the #Colombian #Andes 🧪🦤🐸🌐🌎

link.springer.com/chapter/10.1...
Diversity and Extinction Risk of Colombian Andean Amphibians Across Life Regions
The Andean region in Colombia is heavily populated and has suffered significant habitat conversion and loss, which leads to declining amphibian species richness and abundance. The Colombian Andes enco...
link.springer.com
The Amazon Rainforest was shaped by people. Analysis of 262 trees species across 1,521 forest plots reveals that both pre-Columbian Indigenous peoples and European colonists enduringly influenced the forest’s relative abundance of trees. In PNAS: https://ow.ly/VAqY50XuP38
A paper in Scientific Data presents a novel global natural forest map for 2020 at 10 m resolution. This map can support forest monitoring or conservation efforts that require a comprehensive baseline for monitoring deforestation and degradation. go.nature.com/4remVIQ ⚒️ 🧪
📢 Upcoming online seminar:

Next week (26th November) at 11am CET, Alice Penanhoat @alice4science.bsky.social from Swedish University of Agricultural Sciences will talk about her interdisciplinary research on forest structure 🌲🌳🔍

Register here to join the zoom seminar:
lnkd.in/gcgh5qFE

Reposted by Joan Dudney

Central Europe’s forests face steep biomass losses and beetle outbreaks above 1.5 °C warming; staying below 2 °C keeps timber, carbon and diversity services safer, underscoring the urgency of meeting Paris Agreement targets.
#biomass
@forestecosyst.bsky.social
www.sciencedirect.com/science/arti...
Hi people. Today in "one day, one paper", thermal tolerance breadth in plants exceeds local climate ranges, shaped mainly by heat, cold, and aridity. Desert species show extreme resilience, revealing partial support for climate variability hypothesis and highlighting microclimate-driven plasticity🌎🍁
Drivers of thermal tolerance breadth of plants across contrasting biomes
The results provide partial support for the climate variability hypothesis in plants: photosystem thermal tolerance breadth was greatest in more thermally variable biomes. This relationship was large....
besjournals.onlinelibrary.wiley.com

Incredible figure! Congratulations on this insightful work!

Reposted by Joan Dudney

Unlocking Populus’ genetic blueprint! 🧬
From 707 resequenced trees, researchers built a high-density map pinpointing 89 QTLs for growth, wood, and disease traits, boosting genomic selection accuracy by up to 21%.
🔗 link.springer.com/article/10.1...

#JFR #ForestryGenomics #Populus 🍁🌺🌱🌿
Insights Into Water Vapor Uptake by Dry Soils Using a Global Eddy Covariance Observation Network

🔗 buff.ly/O9bovwm

Reposted by Joan Dudney

Hello everyone. Today in "One day, one paper", contrasting phenological responses among understorey herb species to warming, light, nitrogen, and land-use legacy reveal shifts in plant competition, with key implications for biodiversity and adaptive forest management 🍁🌎
Intra‐annual growth dynamics of forest understorey herbaceous plant species in response to global change
This study provides new insights into the growth dynamics of forest understorey species and their responses to global change drivers. The findings suggest that global changes, such as climate warming...
besjournals.onlinelibrary.wiley.com
Our new paper in Ecology Letters, led by Jan Divíšek, shows that non-invasive alien plant species that successfully establish within local plant communities tend to resemble the resident native species. In contrast, invasive alien species usually differ from native plants.
doi.org/10.1111/ele....
🌳 Our research in Nature Communications!
Converting coniferous to broad-leaved forests in Europe could cut summer hot extremes by up to 1 °C — boosting climate effectiveness.
Read more 👇
🔗https://www.nature.com/articles/s41467-025-64580-y
#ForestNavigator #ClimateScience #Forestry #NatureComms
Conversion from coniferous to broadleaved trees can make European forests more climate-effective - Nature Communications
This study investigates the effects of forestation on temperature in Europe using climate model experiments. The findings indicate that conversion from coniferous to broadleaved trees in currently for...
nature.com
Great to see the results of our massive biodiversity assessment at Berchtesgaden Natl. Park pour in! Cool insights on patterns & drivers of multidiversity!

#1 Macro- and microclimate interactively shape species diversity of multiple taxa in mountain landscapes by L. Geres. doi.org/10.1002/ecog...
Globalization has accelerated the spread of mosquito species that transmit human diseases. An analysis in Nature Communications shows that 45 disease-vector mosquito species have been introduced to non-native regions worldwide. go.nature.com/4hn6ogW 🧪
Mortality from fire & wind is increasing in Europe's forests, but what about biotic disturbances? A new, massive dataset compiled by @thlasny.bsky.social and many local experts shows a mixed picture: While wood borers increase strongly, defoliator activity generally decreases doi.org/10.1111/gcb....
Great new paper led by @knowlton.bsky.social with @ttkeller.bsky.social and @rupertseidl.bsky.social (and me!) Still so much to learn from #Yellowstone about #fire, #forests & #climatechange. #NSFfunded #JFSPfunded
🆕 in Ecosphere's "Vegetation Ecology" track: A hot & dry future may shake up Yellowstone forests—think fewer spruce, more fire-tolerant neighbors

📄Simulated postfire tree regeneration suggests reorganization of Greater Yellowstone forests during the 21st century
doi.org/10.1002/ecs2...

Congratulations @julieedtree.bsky.social on this cutting-edge research, out today #AGUpubs!

High-resolution tree-ring data are dramatically improving our ability to estimate past climate. We’re now much closer to accurately tracking temperature changes—both today and across history!
Dr. Julie Edwards (@julieedtree.bsky.social) leads a new paper showing that high-resolution cellular-scale measurements (Quantitative Wood Anatomy) yield better temperature signals in Alaskan tree rings than even conventional MXD across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Resolution and Frequency‐Dependent Climate Signals in an Arctic Tree‐Ring Temperature Reconstruction of the Last Millennium
Tree-ring density measurement resolution affects low-frequency trends in temperature reconstructions High-resolution anatomical maximum latewood density has stronger correlations with instrumenta...
agupubs.onlinelibrary.wiley.com
📣So happy to share the PhorEau model, combining models of forest dynamics, plant water relations, and process-based SDM = linking ecophysiology, ecology & biogeography 🌳📈💻
gmd.copernicus.org/articles/18/...
➡️ from Tanguy Postic's PhD, with many perspectives to simulate forests under CC
PHOREAU v1.0: a new process-based model to predict forest functioning, from tree ecophysiology to forest dynamics and biogeography
Abstract. Climate change impacts forest functioning and dynamics, but large uncertainties remain regarding the interactions between species composition, demographic processes and environmental drivers...
gmd.copernicus.org
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🧪🌐🌾
Happy to announce a short perspective piece as part of a SynCom @helmholtz.de working group. Discussing the breadth of biodiversity indicators, we encourage to differentiate better between multidimensional diagnosis, leading steering & actionable management indicators
dx.doi.org/10.1002/2688... 🧪
Operational perspectives for biodiversity indicators
To understand, measure and mitigate biodiversity change, science and policy need to differentiate between diagnostic indicators that capture as many different biodiversity facets as needed, outcome-o...
dx.doi.org
As droughts become longer and more intense, their toll on ecosystems could be far greater than we thought. Our new paper in @science.org shows how prolonged & extreme droughts cause dramatic, cumulative losses in ecosystem productivity across the globe www.science.org/doi/10.1126/...

Reposted by Joan Dudney

🌿 CSR strategies reflect species' habitat preferences for stress and disturbance, as well as whole-plant traits, offering support for Grime’s hypothesis and highlighting its significance to understanding plant adaptation in the Anthropocene🌲

Read here: buff.ly/yFDdpAZ

Reposted by Joan Dudney

Can site index be determined using branch whorls detected by deep learning from very dense laser scanning data? 🌲

Check out our newly published paper to find out!

academic.oup.com/forestry/adv...
Pine plantations burn more severely & recover more slowly than other vegetation types. This is observed using the forest map (L) or the forest inventory (R), Spain
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
jgpausas.blogs.uv.es/2025/10/16/p...
🧪🌎🔥🍁🌳🔥 wildfire @jappliedecology.bsky.social
Paper out in Ecology Letters!

We - incl. @westobymark.bsky.social @biogeokreft.bsky.social and others - show that traits are linked to species’ colonisation and extinction probabilities on #islands — with direct implications for species persistence and the Equilibrium Theory of Island #Biogeography
Resurveyed Island Vegetation Reveals That Species Colonisation and Extinction Probabilities Are Linked to Traits
We show that species richness and community trait composition on 132 Australian islands remained stable over six decades, despite high species turnover. Colonisation and extinction probabilities were....
onlinelibrary.wiley.com

Reposted by Joan Dudney

An article about a former lab tech in my lab, Kim Ballare, in the new NYTimes "Lost Science" series about impacts of federal cuts. Thanks to @carlzimmer.com for doing this!
www.nytimes.com/2025/10/08/s...
She Studied How Logging Affects Pollinators
www.nytimes.com

Reposted by Joan Dudney

Rarely do I get to see seminars that truly inspire—but this one hit all the high notes! Thanks for visiting us!
Great visit to UCSB & an honor to present in the EEMB seminar series. Was fun to talk forests, fire, & resilience w/ many awesome faculty, graduate students & undergrads.
🌲🔥
Thanks to Anderegg Lab for hosting me, esp Joe Celebrezze. Was fun to be back at my UG alma mater.
@dudney-joan.bsky.social