@toinechampreux
PhD - Global Ecology, Paleoecology, Paleobotany, Biogeography & Prehistory | vegetation modelling and spatial analyses Deep-time to modern vegetation distribution 🌱 Megafauna extinctions | Neotropics after the Ice Age 🌎
First post on Bluesky! 🌿
Excited to share our new study in Ecography, led by Maxime Lenormand: combining naturalist inventories and satellite data to map plant biodiversity.
Here’s a bioregionalization of the flora of France!
🔗 nsojournals.onlinelibrary.wiley.com/doi/full/10....
[vegetation responded at timescales from hundreds to tens of thousands of years, but not at timescales shorter than about 150 years]
Coupled, decoupled, and abrupt responses of vegetation to climate across timescales | Science www.science.org/doi/10.1126/... 🧪
Also just out: Our new review in @ecography.bsky.social on how ecological models tend to incorporate land use.
Reviewing and benchmarking ecological modelling practices in the context of land use
doi.org/10.1002/ecog...
New paper! led by Ruben Bernardo-Madrid "A general rule on the organization of biodiversity in Earth’s biogeographical regions" in NEE @natureportfolio.nature.com
Read it here: doi.org/10.1038/s415...
Amazon rainforest adjusts to long-term experimental drought ..."After elevated tree mortality during the first 15 years, ecosystem-level structural changes resulted in the remaining trees no longer experiencing drought stress." 🧪🌐🌾
www.nature.com/articles/s41...
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.
🌲🌳🌐 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... 🧪
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....
Global Ecology 🌐 starter pack vol 1 & 2 are full and curated !! ✨💚
Please share so they will fly into the blue sky 🦋🌈
Vol1 👉 bsky.app/starter-pack...
Vol2 👉 bsky.app/starter-pack...
Will start a Vol. 3 soon, please reply if you want to be in !
🌐🧪🌍🦤🍁🦑🪴🦉🐍🌾
The Atlantic Forest in Brazil. A lush almost mossy looking canopy of trees covers pointy hills in close proximity. It's the kind of landscape that a geographer would get goosebumps looking at.
📝 How Amazon Trees Marched to the Atlantic Forest 🧵
https://doi.org/n3rb
Ancient rainforest trees found hidden highways through Brazil's drylands, making more than a dozen epic journeys from the Amazon to the Atlantic coast over twelve million years.
#Botany #PlantScience 🧪 #InBrief
A great starter pack to connect with people working on #ecology at a large scale 🌍🧪
Global Ecology Vol. 2 👉 go.bsky.app/L37W5uH
DM @global-ecology.bsky.social to join the pack, there’s still room for more ! 😊
Super excited that our review on the ecology of the Ediacaran-Cambrian transition is now out on how ecology changes across scales from organisms to communities to the world through time. Fab art @franzanth.bsky.social showing the build up of ecological complexity
www.cambridge.org/core/journal...
How will biodiversity respond to efforts to mitigate C emissions? Smith et al. in @science.org document that vert. biodiv. benefits from (natural) reforestation. BUT, planting biocrops, while it reduces climate change, hurts most species bc they lose habitat. 🧪🌎
www.science.org/doi/10.1126/...
geog.umd.edu/featured-con... Annual data from 2015 to 2023 provides detailed insights into tree canopy cover and height. 🍁🍁🌳 #forestecol
My final PhD chapter published in FEE (Frontiers in Ecology and the Environment): re-mapping Köppen-Geiger climate zones, but now using microclimate! Very excited to have this one out:
onlinelibrary.wiley.com/doi/abs/10.1...
Figure 1 from the study by Champreux et al. (published in Ecological Monographs) showing four global biome maps using different biome-delimitation criteria resulting in various geographic divisions, biome names, and number of biomes. Caption from the study: Global biome maps compared in this study. (a) Compilation biome map of World Wildlife Fund Terrestrial Ecoregions of the World (Olson et al., 2001). (b) Simulated biome map from Holdridge's (1967) life zones (Leemans, 1990a, 1990b) and two functional biome maps: (c) MODIS-IGBP land-cover-type product (Friedl et al., 2010; Loveland & Belward, 1997) and (d) dominant biome distribution over 31 years from global functional biome scheme from Higgins et al. (2016, 2017). Biome names are derived from three letters (1) tall versus short, (2) low, medium, and high vegetation productivity index, and (3) cold, dry, both cold and dry, nonseasonal for growth limitation index.
What is a #biome? 🌳🌲🌱
How can we delineate past, present and future biomes, despite the patchy and incomplete data we have on the distribution of nature on Earth? 🌍🌐
Our review 👉 doi.org/10.1002/ecm....
🧪 #ecology #biogeography #paleoecology #climate #vegetation #FunctionalTraits
Figure 1 from the study by Champreux et al. (published in Ecological Monographs) showing four global biome maps using different biome-delimitation criteria resulting in various geographic divisions, biome names, and number of biomes. Caption from the study: Global biome maps compared in this study. (a) Compilation biome map of World Wildlife Fund Terrestrial Ecoregions of the World (Olson et al., 2001). (b) Simulated biome map from Holdridge's (1967) life zones (Leemans, 1990a, 1990b) and two functional biome maps: (c) MODIS-IGBP land-cover-type product (Friedl et al., 2010; Loveland & Belward, 1997) and (d) dominant biome distribution over 31 years from global functional biome scheme from Higgins et al. (2016, 2017). Biome names are derived from three letters (1) tall versus short, (2) low, medium, and high vegetation productivity index, and (3) cold, dry, both cold and dry, nonseasonal for growth limitation index.
What is a #biome? 🌳🌲🌱
How can we delineate past, present and future biomes, despite the patchy and incomplete data we have on the distribution of nature on Earth? 🌍🌐
Our review 👉 doi.org/10.1002/ecm....
🧪 #ecology #biogeography #paleoecology #climate #vegetation #FunctionalTraits
Thank you!
I would love to be added! I am an ecologist mainly focusing on deep-time to modern vegetation distribution.
scholar.google.com/citations?us...
Figure 5 from the recent paper from Jurikova et al. (2025), a paleo-artistic representation of the Carboniferous-Permian transition showing luxuriant Carboniferous forests on the left and more arid Permian environments on the right with associated fauna, separated by a river. Caption from the paper: A relatively rapid rise in atmospheric CO2 approximately 294 Ma released the Earth from its penultimate icehouse (left) and transitioned the world to a warmer and drier climate of the Early Permian (right). Palaeo-artistic rendering based on findings of this study and previously published literature
Rapid rise in atmospheric #CO2 marked the end of the Late #Palaeozoic Ice Age
Jurikova et al. 👉 rdcu.be/d7fQJ
"About 294 million years ago, atmospheric CO2 rose abruptly (4-fold), releasing the Earth from its penultimate ice age and transforming the Early Permian into a warmer world."
World map showing biodiversity collection hotspots (red) and blindspots (blue). BALL ET AL./PEERJ (2025)
Our records of the world’s biodiversity are patchy—but that's not because lots of places are "unexplored." That story and more of the best in @science.org and science in this edition of #ScienceAdviser: www.science.org/content/arti... 🧪
Thank you!
CO2 fertilization can be a disturbance leading to worldwide #forest degradation 🌳🌲
"even the most remote forests in the world have been altered by human action via CO2 fertilization, and the responsibility for their integrity must be shared globally" 🌐
Lapola et al. 👉 doi.org/10.1002/ppp3...
Hi Graciela, I'd be happy to be added 😊
🌍 Projected future climatic forcing on the global distribution of #vegetation types 🌲🌳🌿🍃🌱
Allen et al. 👉 doi.org/10.1098/rstb...
#Biogeography #ecology #biomes
Post your most popular #art from Twitter🍁
I've never had anything actually go viral or get many likes, but this Ginkgoales leaf montage ended up being my most popular piece of art: so YAY for paleobotany!!! #paleoart #paleobotany #ginkgo
Image of the first page and abstract of the paper "The ecology of plant extinctions Author links open overlay panel Richard T. Corlett 1 2 Show more Add to Mendeley Share Cite https://doi.org/10.1016/j.tree.2024.11.007 Get rights and content Highlights The fossil record suggests that climate change was the major driver of plant extinctions and regional extirpations from the Pliocene until recently, when anthropogenic habitat loss became dominant. Known recent plant extinctions are disproportionately few in comparison with well-studied animal taxa, but many more species are probably committed to inevitable extinction unless given targeted support. Recent warm-edge extirpations demonstrate the growing impact of anthropogenic climate change and show that predictions of massive climate-driven extinctions later this century are plausible. The proximate causes for population extirpations are still rarely known but are likely to be highly varied and both species and location specific."
An important review - The ecology of plant extinctions - "Recent warm-edge extirpations demonstrate the growing impact of anthropogenic climate change & show that predictions of massive climate-driven extinctions later this century are plausible" www.sciencedirect.com/science/arti... 🌾🌎🧪🌐
Figure 7 from S. Scheiter et al. 2024 showing 3 world maps representing the predicted and observed biome maps, as well as the areas where they agree or disagree. Caption from the paper: Global biomes derived from traits. Using species distribution models and bioclimatic data, biome patterns derived from the spatial coverage of the trait data were extrapolated to the global scale. Here, results from trait cluster 1 and the Nature Conservancy (2009) biome map were used. Biomes: 1, tropical subtropical moist broadleaf forest; 3, tropical subtropical grassland savanna and shrub; 4, tropical subtropical dry broadleaf forest; 5, tropical subtropical coniferous forest; 6, flooded grassland and savanna; 7, desert and xeric shrub; 8, montane grassland and shrub; 9, mediterranean forest woodland and scrub; 10, temperate broadleaf and mixed forest; 11, temperate grassland savanna and shrub; 12, temperate conifer forest; 13, boreal forest/taiga; 14, tundra. Publisher’s remark: please note that the above figure contains disputed territories.
🌍 Crowd-sourced trait data can be used to delimit global #biomes 🌳🌲🌱🌿🍃
Scheiter et al. 👉 bg.copernicus.org/articles/21/...
#Biogeography #vegetation #FunctionalTraits #ecology 🌐
🌳 New findings 🌳
Phylogenetic diversity cannot be used as a proxy for functional diversity in vascular plant communities 🌲🌳🌴🌵🌱🍀🌾🌼 We used the #sPlot database & found a pronounced decoupling between phylogenetic & functional diversity ⬇️
🧪🌐🌏🍁
@natureecoevo.bsky.social
shorturl.at/Bf5IK
Global burned area increasingly explained by climate change
Burton et al. 👉 rdcu.be/d2yat
"The simulations show that climate change increased global burned area by 15.8% [...] for 2003–2019 and increased the probability of experiencing months with above-average global burned area by 22% [...]"