@Jon_Chase03

Ecologist; Biodiversity Synthesis Professor @idiv and @UniHalle; Senior Editor @Ecology_Letters; Dad

Joined December 2018
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  • Following901
  • Followers6.2K
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Our new study @Nature synthesizes time series on insects from sites across the world. Building on our previous work @idiv, we show that abundant species are declining faster than rarer species (richness is also declining). Expertly led by @PunksInScience nature.com/articles/s41586-0…

Disproportionate declines of formerly abundant species underlie insect loss

Nature - An analysis of more than 500 sites distributed worldwide finds that declines in the abundance of terrestrial insects are attributable mainly to decreases in species that were formerly...

nature.com
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🚀 BioTIME 2.0 - the largest biodiversity time-series database - now spans 12 million records from 553,000 locations, tracking ecosystem changes since 1874! idiv.de/major-update-to-biot… @univofstandrews @idiv @ERC_Research @Jon_Chase03

Major update to BioTIME 2.0, world’s largest biodiversity time-series database

BioTIME 2.0 is the largest biodiversity time-series database on the planet and gives unprecedented insight into global biodiversity.

idiv.de
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See our paper exploring scaling relationships of diversity-stability (and its components), applied to real-world data and metacommunity theory with habitat destruction. Was a phenomenal team to work with, led by @maowei_liang, @shaopeng_wang and Qi Yang, and I learned so much!
Maowei Liang@maowei_liang21 Mar 2025
I’m thrilled to share our diversity-stability study on @ScienceMagazine Unifying spatial scaling laws of biodiversity and ecosystem stability | Science science.org/doi/10.1126/scie…

Unifying spatial scaling laws of biodiversity and ecosystem stability

While both species richness and ecosystem stability increase with area, how these scaling patterns are linked remains unclear. Our theoretical and empirical analyses of plant and fish communities...

science.org
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A new paper with amazing colleagues is out! @ESAEcosphere 🇺🇸🇩🇪🏴󠁧󠁢󠁳󠁣󠁴󠁿🇵🇹🏴󠁧󠁢󠁥󠁮󠁧󠁿🇯🇵 Disentangling nonrandom structure from random placement when estimating β‐diversity through space or time dx.doi.org/10.1002/ecs2.7006…

Disentangling nonrandom structure from random placement when estimating β‐diversity through space...

There is considerable interest in understanding patterns of β-diversity that measure the amount of change in species composition through space or time. Most hypotheses for β-diversity evoke nonrand...

esajournals.onlinelibrary.wiley.com
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Does fragmentation reduce biodiversity? New research provides insights into a 50-year old debate 🌎conservationcorridor.org/dig…

Resolving a 50-year debate: fragmentation decreases biodiversity on multiple scales - Conservation...

For 50 years, there has been ongoing debate over whether habitat fragmentation leads to biodiversity loss. The reason for this debate is that fragmentation is a complex process: fragmentation...

conservationcorridor.org
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What a wonderful paper!! Really clear results and extremely important research!! Congrats Thiago Gonçalves-Souza @Nate_J_Sanders @Jon_Chase03 @nickmhaddad nature.com/articles/s41586-0…

Species turnover does not rescue biodiversity in fragmented landscapes

Nature - An analysis of habitat fragmentation using a dataset of more than 4,000 species worldwide shows that fragmentation reduces biodiversity at all scales, and that increases in β...

nature.com
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Jonathan Chase retweeted
Nick Haddad@nickmhaddad12 Mar 2025
Our paper led by Thiago Gonçalves-Souza is out. Habitat fragmentation and habitat loss reduce biodiversity. @Nate_J_Sanders @Jon_Chase03 Results from 37 studies distributed worldwide, on plants and animals, comparing continuous and fragmented landscapes. nature.com/articles/s41586-0…

Species turnover does not rescue biodiversity in fragmented landscapes

Nature - An analysis of habitat fragmentation using a dataset of more than 4,000 species worldwide shows that fragmentation reduces biodiversity at all scales, and that increases in β...

nature.com
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Nick Haddad@nickmhaddad28 Aug 2024
Important new paper led by Melissa Guzman showing that insecticides reduce bee abundances in the United States nature.com/articles/s41893-0…

Impact of pesticide use on wild bee distributions across the United States

Nature Sustainability - Bees provide important pollination ecosystem services in agricultural landscapes, but the extent to which they are affected by pesticide use on a continental scale has yet...

nature.com
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Hey #ESA2024 @ESA_org ! Anyone have any cool “synthesis” projects they’re looking for an awesome place to publish!?! Try @Ecology_Letters! Let me know if you have something or see something. Would be delighted to consider it. onlinelibrary.wiley.com/jour… – at Oak Park, MI

Ecology Letters

Ecology Letters is a broad-scope ecology journal considering all taxa, in any biome and geographic area, and spanning community, microbial & evolutionary ecology.

onlinelibrary.wiley.com
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We studied how community assembly processes vary across ecosystems, latitude and taxon groups. We found that homogeneous selection dominates especially in marine systems while heterogeneous selection is rare @Oikos_Journal @GeoHelsinkiUni @GracoRoza nsojournals.onlinelibrary.wi…

Homogeneous selection and stochasticity overrule heterogeneous selection across biotic taxa and...

Deterministic factors including homogeneous and heterogeneous selection and stochastic factors jointly shape ecological communities. However, a quantitative synthesis of the factors underlying the...

nsojournals.onlinelibrary.wiley.com
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Another update in the Amarasekare saga. An insider from UCLA EEB (Peter Kareiva) speaks out. pamarasekare.org/an-insider-… – at Birmingham, MI
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The International Biogeography Society (TIBS) has relaunched its flagship OA scientific journal, Frontiers of Biogeography (FoB), on the ARPHA platform, where it will be co-published with Pensoft Publishers. Check out the announcement at biogeography.org/news/news/r… #newbiogeo
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Oskar Hagen@hagen_oskar2 Jul 2024
Thrilled that our research is out and on the cover! The macro-eco-evolutionary interplay between dispersal, competition, and landscape structure using an upscaled individual-based model over 5 million years. 📄doi.org/10.1098/rstb.2023.01… 🏝️ #gen3sis @RenskeOnstein @Jon_Chase03
Royal Society Publishing
@RSocPublishing25 Jun 2024
New theme issue 'Diversity-dependence of #dispersal: interspecific interactions determine spatial #dynamics', edited by @BonteDries, @efronhofer and @Sal_Keith. Read: ow.ly/V53x50SoUm6
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A recent study published in @NatureEcoEvo highlights the delicate relationship between habitat loss, fragmentation and biodiversity. @Jon_Chase03 and colleagues show that the total amount of habitat lost is a key factor influencing how fragmentation affects #biodiversity. #idiv
PJeganathan, CC BY-SA 3.0 via Wikimedia Commons

ALT PJeganathan, CC BY-SA 3.0 via Wikimedia Commons

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This post is on behalf of our colleague and friend Priyanga Amarasekare, who is not on X and continues to endure disappointing and a draconian treatment by UCLA. She has asked us to share an update via this thread.
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Was great having you visit @idiv! Looking forward to enlightening collaborations! – at Leipzig, Germany
David Cunillera-Montcusí@david_cunillera26 Jun 2024
Leaving #Leipzig after my #FastAndFurious visit to @idiv visiting @Jon_Chase03 lab's to start the next #MetaHeroes adventure! Inspiring and insightful exchanges to begin drafting & exploring long-term landscape degradation effects on diversity! @Zsofia_Horvath1 @MSCActions
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🔍🌱 New research: Scientists reveal that the total habitat lost plays a crucial role in how fragmentation impacts biodiversity. This nuanced understanding challenges the binary view of fragmentation as purely good or bad. nature.com/articles/s41559-0… #biodiversity #idiv #research
Jonathan Chase@Jon_Chase0324 Jun 2024
Is fragmentation bad or good for biodiversity? Yes! We use a classical competition-colonization metacommunity model to show that fragmentation can increase or decrease diversity depending on the total amount of habitat in the landscape. @idiv @UniHalle nature.com/articles/s41559-0…
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Is fragmentation bad or good for biodiversity? Yes! We use a classical competition-colonization metacommunity model to show that fragmentation can increase or decrease diversity depending on the total amount of habitat in the landscape. @idiv @UniHalle nature.com/articles/s41559-0… – at Leipzig, Germany
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Jonathan Chase retweeted
Nick Haddad@nickmhaddad20 Jun 2024
Our new paper led by Braeden Van Deynze shows insecticides are a leading driver of butterfly decline in the US Midwest, above climate and land use change. doi.org/10.1371/journal.pone…
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Petr Keil@R_you_cereal21 Jun 2024
Living Planet Index "suffers from several mathematical and statistical issues, leading to a bias towards an apparent decrease even for balanced populations. The claim that vertebrate populations declined by 70% since 1970 is thus unsubstantiated". Source: communities.springernature.c…

The Living Planet Index is not a reliable measure of population changes

A widely used index characterizing the average change in population sizes suffers from several mathematical and statistical issues, leading to a bias towards an apparent decrease even for balanced...

communities.springernature.com
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Petr Keil@R_you_cereal19 Jun 2024
Job offer! We are looking for a *postdoc* in biodiversity science, macroecology, ecol. modelling, stats. In Prague, Czech Republic, @fzpczu, 2 years (with possible extension), ERC-funded, 66,000 CZK/m gross. More info and application instructions: petrkeil.github.io/news/2024…
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