Victor Danneyrolles
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victordnr.bsky.social
Victor Danneyrolles
@victordnr.bsky.social
1.2K followers 390 following 6 posts


Researcher in forest/landscape/historical/global change ecology @UQAC & @CEF_CFR. Past and future long-term forest changes, their causes and consequences…

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Environmental science 55%
Geography 17%
Posts Replies Media Videos

Reposted by Jens‐Christian Svenning, Ben Bond‐Lamberty, Emilio Vilanova , and 1 more

jgpausas.bsky.social
juli g pausas @jgpausas.bsky.social · Sep 24
Sequoia sempervirens (redwood; world's tallest tree) is well adapted to high-intensity crown fires (eg 2020), but Sequoiadendron giganteum (giant sequoia; world's most massive tree) is adapted to surface fires only!
bsapubs.onlinelibrary.wiley.com/doi/10.1002/...

🧪🌍🔥🌿🌳🔥🪴 @botsocamerica.bsky.social
Sequoia sempervirens (Coast redwood) resprouting epicormically after a high-intensity fire Sequoiadendron giganteum (giant sequoia) with a fire scar in the base from a surface fire

Reposted by Mathias Disney, Juan Rocha, Tommaso Jucker , and 1 more

rupertseidl.bsky.social
Rupert Seidl @rupertseidl.bsky.social · Sep 18
What is the cost of wildfire, windthrow and bark beetles for Europe’s forestry? We estimate that disturbances reduce Europe’s forest value by €115 bn, more than doubling to €247 bn under severe climate change. Led by @johannesmohr.bsky.social, out in @natclimate.nature.com doi.org/10.1038/s415...

Reposted by Pieter De Frenne, Neil Pederson, Brian J. Harvey , and 4 more

rupertseidl.bsky.social
Rupert Seidl @rupertseidl.bsky.social · Sep 8
Climate change increasingly alters the interactions between forest disturbances. Here we present a framework for quantifying dist. interactions and compile evidence for their impacts. Led by @dudney-joan.bsky.social with @brian-j-harvey.bsky.social & @julieedtree.bsky.social doi.org/10.1146/annu...

Reposted by Jens‐Christian Svenning, Ana S. L. Rodrigues, Ben Bond‐Lamberty , and 12 more

tommaso-jucker.bsky.social
Tommaso Jucker @tommaso-jucker.bsky.social · Sep 5
Only a pre-print for now, but after 4 years of hard work I couldn't resist sharing this!

The Global Canopy Atlas: analysis-ready maps of 3D structure for the world's woody ecosystems

📜: doi.org/10.1101/2025...

Huge team effort led by the brilliant Fabian Fischer!
Global distribution of forest landscapes covered by airborne LiDAR

victordnr.bsky.social
Victor Danneyrolles @victordnr.bsky.social · Aug 19
📄 New paper in Forest Ecology & Management: Using forestry archives, we tracked changes since the 1950s across 3.8M ha of Québec forests. Results show significant shifts in age structure & composition linked to natural disturbance, forest management & climate change.
🔗 doi.org/10.1016/j.fo...

victordnr.bsky.social
Victor Danneyrolles @victordnr.bsky.social · Aug 4
Aerosol from biomass burning Monday, August 4 😬
atmosphere.copernicus.eu/charts/packa...

Reposted by Victor Danneyrolles

firebobbc.bsky.social
Robert W. Gray @firebobbc.bsky.social · Jul 12
"Years with such extreme FWI metrics are 88-152% more likely across global forested lands under a contemporary (2011–2040) climate compared to a quasi-preindustrial (1851–1900) climate, with the most pronounced increased risk in temperate and Amazonian forests." www.nature.com/articles/s41...
Climate change has increased the odds of extreme regional forest fire years globally - Nature Communications
The authors show that extreme fire years in global forests align with rare fire weather extremes. Climate change has made such extremes 88-152% more probable. These findings highlight the need for act...
www.nature.com

Reposted by Victor Danneyrolles

mgirardin.bsky.social
Martin P. Girardin @mgirardin.bsky.social · Jun 27
New paleofire study! Spring droughts have intensified over the past 250 years, reshaping fire seasonality in eastern Canada. Spring is now nearly as flammable as summer, driving infrequent but large and severe fires 🌲🔥 onlinelibrary.wiley.com/doi/10.1111/...
Drying Spring Accelerates Transitions Toward Pyrogenic Vegetation in Eastern Boreal North America
Over the past 8000 years, spring climatic conditions, particularly drought, have been the primary driver of wildfire dynamics in eastern boreal North America. Increasing spring dryness over the last ....
onlinelibrary.wiley.com

victordnr.bsky.social
Victor Danneyrolles @victordnr.bsky.social · Jun 17
Here is some early Sentinel-2 footage (May 26, 2025) of the 25LF-SHOE wildfire near Prince Albert National Park (Saskatchewan). This fire has since become the largest active fire of the 2025 season in Canada, with over 550,000 hectares burned as of today, June 17, 2025.

victordnr.bsky.social
Victor Danneyrolles @victordnr.bsky.social · Jun 17
I'm a bit late on this, but here is Sentinel-2 footage (June 6, 2025) of the G90216 fire in northern British Columbia. The western front is over 50 km long, and the entire fire is still out of control, with ~211,000 hectares burned.

Reposted by Victor Danneyrolles

tonyveco.bsky.social
Antonio Vecoli (@tonyveco on X) @tonyveco.bsky.social · Apr 26
🔴🔥⚠️🇷🇺Terrifying start of wildifires season and emergency in #Russia burning 194000Ha in #Zabaikalsky due to man-made fires boosted by lack of snow and early spring ⬇️#Sentinel2 📸 of fires,massive smoke and pyrocumulonimbus over 5000km2 on Apr.25 #ClimateEmergency @volcaholic1.bsky.social

Reposted by Brian J. Harvey, Cornelius Senf, Martin Ehbrecht , and 3 more

rupertseidl.bsky.social
Rupert Seidl @rupertseidl.bsky.social · Mar 26
Natural disturbances are often invoked as an argument against creating new forest reserves. But are reserves more affected by disturbances than managed forests? For C Europe the answer is no, in fact reserves have lower disturbance rate & severity than managed forests! doi.org/10.1111/1365...

Reposted by Victor Danneyrolles

paulomfernandes.bsky.social
Paulo Fernandes @paulomfernandes.bsky.social · Mar 18
#FIRE-ADAPT project new paper
Integrated fire management as an adaptation and mitigation strategy to altered fire regimes - Communications Earth & Environment
Integrated Fire Management can be used as a valuable adaptation and mitigation strategy combining fire prevention, response, and recovery across different ecological, socio-economic, and cultural cont...
www.nature.com

Reposted by Victor Danneyrolles

jcsvenning.bsky.social
Jens-Christian Svenning @jcsvenning.bsky.social · Mar 18
This #defaunation-driven dynamic is part of a broader set of human drivers that cause rising ecological novelty across the biosphere www.nature.com/articles/s41...
Widespread ecological novelty across the terrestrial biosphere - Nature Ecology & Evolution
Even outside urban and agricultural areas, ecosystems are vastly transformed as a result of human activities. Here the authors map patterns in climate change, defaunation and floristic disruption to q...
www.nature.com

Reposted by Sami W. Rifai, Encarni Montoya, Daniel Zuleta , and 1 more

ymalhi.bsky.social
Yadvinder Malhi @ymalhi.bsky.social · Mar 7
In our new paper in @science.org, we show that tropical forests are changing over time, but too slowly to track climate change. Our article, led by @jeaggu.bsky.social just out:

www.science.org/doi/10.1126/...

@oxfordgeography.bsky.social
@naturerecovery.bsky.social
@forestplots.bsky.social
Tropical forests in the Americas are changing too slowly to track climate change
Understanding the capacity of forests to adapt to climate change is of pivotal importance for conservation science, yet this is still widely unknown. This knowledge gap is particularly acute in high-b...
www.science.org

Reposted by Victor Danneyrolles

xavierdelamo.bsky.social
Xavier De Lamo @xavierdelamo.bsky.social · Feb 11
Hey Fire Folks, check out these new @fao.org positions to support the Global Fire Hub 🔥 🌳

👉🏼 Forestry Officer (Integrated Fire Management) in Santiago, Chile jobs.fao.org/careersectio...

👉🏼 Forestry Officer (Integrated Fire Management) in Bangkok, Thailand jobs.fao.org/careersectio...

👇🏼🧵
Forestry Officer (Integrated Fire Management)
Click the link provided to see the complete job description.
jobs.fao.org

Reposted by Jill S. Baron, John T. Abatzoglou, He Yin , and 2 more

grumpyunclesean.bsky.social
GrumpyUncleSean🔥 @grumpyunclesean.bsky.social · Feb 10
1/n
Please see our new paper in Nature Communications!

We used 1,851 tree-ring fire-scar sites and contemporary fire perimeters to quantify the prevalence of wildfire from 1600-1880 compared to 1984-2022. 🧪🌍🔥

Our key findings are as follows ...
A fire deficit persists across diverse North American forests despite recent increases in area burned - Nature Communications
Across many North American forests, recent years with exceptional area burned are not unprecedented when considering the multi-century perspective offered by fire-scarred trees. Nevertheless, abundant...
www.nature.com

Reposted by Victor Danneyrolles

jgpausas.bsky.social
juli g pausas @jgpausas.bsky.social · Feb 8
Fires in the Petrocene
A review of the book Fire Weather @johnvaillant.bsky.social

It focuses on the 2016 Fort McMurray fire (Alberta) to understand firestorms across the world
doi.org/10.1093/bios...
jgpausas.blogs.uv.es/2025/02/08/f...
En español: El Tiempo del Fuego, ed @capitanswing.bsky.social
Covers of the book Fire Weather by J. Vaillant of the original English version and the Spanish translation (El Tiempo del Fuego)

Reposted by Mike Flannigan, Victor Danneyrolles

zacksteel.bsky.social
Zack Steel 🪶🦇🌲🔥 @zacksteel.bsky.social · Feb 7
We are recruiting a postdoctoral ORISE fellow to join an interdisciplinary team focused on issues of ecosystem type conversion, directional biodiversity change, and what to do about it. Please spread the word! 🌎🌐🧪

Details here:

www.zintellect.com/Opportunity/...
A fire-killed forest in the Sierra Nevada Mountains. Recently after fire with only snags remaining

Reposted by Amy Bruckman, Victor Danneyrolles

stairwaytokevin.bsky.social
Kevin Bird @stairwaytokevin.bsky.social · Feb 2
The National Science foundation has just updated their FAQ to say they are complying with the court order and has restored access to funds and the ACM$ platform new.nsf.gov/executive-or...
1. When will the Award Cash Management Service (ACM$) be restored to allow disbursements on active awards? Access to ACM$ has been restored and the system is available to accept payment requests as of 12:00 PM ET on February 2, 2025. 2. On Friday, January 31, 2025, a Federal Court issued a Temporary Restraining Order (TRO) directing Federal grant-making agencies, including the U.S. National Science Foundation (NSF), to"..not pause, freeze, impede, block, cancel, or terminate... awards and obligations." What is NSF doing to comply with this TRO? NSF has restored access to the ACM$ system as of 12:00 PM ET on February 2, 2025 and is in compliance with the TRO.

Reposted by Thomas L. Frölicher, Victor Danneyrolles

frediotto.bsky.social
Prof Friederike Otto @frediotto.bsky.social · Jan 29
LA is in a high fire risk region & fire weather conditions are complex. So we @wwattribution.bsky.social looked at many lines of evidence. All show: our burning of fossil fuels increased the likelihood of such extreme fire weather conditions www.worldweatherattribution.org/climate-chan...

Reposted by Victor Danneyrolles

grumpyunclesean.bsky.social
GrumpyUncleSean🔥 @grumpyunclesean.bsky.social · Jan 17
1/2

For this #FireScarFriday, I'd like to share our new paper titled "Spatiotemporal synchrony of climate and fire occurrence across North American forests (1750–1880)" 🧪🔥

We used 1159 fire scar sites to conduct this study!

We found that ...
Spatiotemporal Synchrony of Climate and Fire Occurrence Across North American Forests (1750–1880)
Aim Increasing aridity has driven widespread synchronous fire occurrence in recent decades across North America. The lack of historical (pre-1880) fire records limits our ability to understand long-...
onlinelibrary.wiley.com

Reposted by Victor Danneyrolles

andrewrumbach.bsky.social
Andrew Rumbach @andrewrumbach.bsky.social · Jan 16
Stop what you are doing and read this: www.nytimes.com/interactive/...
More Americans, Risking Ruin, Drop Their Home Insurance
As climate threats worsen, they are skipping payments and losing protection.
www.nytimes.com

Reposted by Victor Danneyrolles

kjmacleod.bsky.social
Kirsty MacLeod @kjmacleod.bsky.social · Jan 15
www.tbsnews.net/features/pan...
In Trump’s fantasy world, fish set fire to Los Angeles
Activists and scientists hoped that once more people experienced the dangers of the climate crisis firsthand, they’d be compelled to act. That’s not working out
www.tbsnews.net

victordnr.bsky.social
Victor Danneyrolles @victordnr.bsky.social · Jan 14
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
Understanding the long‐term dynamics of vegetation since 1953 in high‐mountain regions
Alpine ecosystems show complex shifts in species ranges and community structures due to climate, land use, geomorphology, and species interactions. Over 70 years, vegetation patterns in an alpine to ....
besjournals.onlinelibrary.wiley.com

Reposted by Victor Danneyrolles

lilianvallet.bsky.social
Lilian Vallet @lilianvallet.bsky.social · Jan 13
🚨NEW SCIENTIFIC STUDY🚨

8 million tonnes of CO2
~ 2% of french greenhouse gas emissions 🔵⚪🔴
~ 30% of the national sequestration capacity of the forest🌳

That's the carbon emissions from fires in 2022! 🔥

⚠️Predominant effect of soil combustion

🧵👇

Reposted by Victor Danneyrolles

jdaldern.bsky.social
Jared Dahl Aldern @jdaldern.bsky.social · Jan 12
No, “brush clearance” could not have “prevented” the Palisades Fire, but fuel reduction would reduce the firestorm’s intensity. And as @amycardinal.bsky.social put it so well, “it’s not only about wildfire risk reduction, but living daily in healthy landscapes that are properly stewarded.”
Fact check: Could brush clearance have prevented the Palisades Fire?
LAist dives into the science behind the claim that the brush clearance would have 'significantly mitigated' the destruction and losses.
laist.com

Reposted by Victor Danneyrolles

nickmustoe.bsky.social
Nick Mustoe @nickmustoe.bsky.social · Jan 11
“It’s not just a California quirk,” Pyne said. “California, I think, gets there first in exaggerated forms, but this is a national issue. And, in fact, it’s becoming an international issue.”
Inconvenient truths about the fires burning in Los Angeles from two fire experts
For years, renowned fire experts Jack Cohen and Stephen Pyne have tried to shift the conversation on fire prevention strategies. This week’s destruction, they say, could have been minimized.
www.latimes.com

Reposted by Victor Danneyrolles

julienruffault.bsky.social
Julien Ruffault @julienruffault.bsky.social · Jan 11
Une version actualisée des projections pour la France, intégrant les dernières projections climatiques ainsi que des estimations quantitatives de l'activité incendiaire (et pas seulement du danger météorologique), est disponible ici :
www.inrae.fr/actualites/d...
Le dérèglement climatique attise les risques de feux de forêts
Le dérèglement climatique induit une hausse des risques d’incendies à des niveaux inédits, ce qui menace des zones jusque-là épargnées. Les feux de forêts qui concernent des surfaces importantes (plus...
www.inrae.fr

Reposted by Lawren Sack, Victor Danneyrolles

pyrogeog.bsky.social
Dr. Crystal A. Kolden @pyrogeog.bsky.social · Jan 9
Here's the reality about the #LAFires this week: this isn't the first time ANY of these places have burned. Not even close. In 2018, we mapped CA fire history to look at fire frequency across SoCal. Santa Monica Mtns area burns more than anywhere else -- up to once per decade in a given spot. 🧵
Map showing the number of times a location has burned in SoCal and which kind of fire it was: one burning under Santa Ana winds, or one that was a summer, fuel-driven fire without Santa Ana winds. Malibu area had burned at least 8 times from 1900-2017, and has burned twice now since. Image from Kolden and Abatzoglou (2018): https://www.mdpi.com/2571-6255/1/2/19