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Jonas Wickman

@jonaswickman.bsky.social
325 followers 40 following 12 posts

Theoretical ecologist, postdoc at W.K. Kellogg Biological Station

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Reposted by Jonas Wickman
bob week @bweek.bsky.social · 16/03/2026
new framework for stochastic eco-evo dynamics of multivariate traits now published at jtb 1 new result on response of G matrices to drift , questioning classical wisdom 2 new tools to make measure-valued processes accessible 3 synthesis of classic multvr quant gen ! enjoi :3 doi.org/10.1016/j.jt...
doi.org
Redirecting
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Reposted by Jonas Wickman
International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 24/03/2026
🗓️Next Tuesday our online seminar speaker is Purushottam Dixit (Yale), presenting: ⭐Niche dimensionality drives microbial community structure⭐ Global Times: www.timeanddate.com/worldclock/f... Zoom Link: iite.info/seminar/ Free and open to all. See you there!
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Jonas Wickman @jonaswickman.bsky.social · 23/03/2026
In our second model, we show that intraspecific trait variance is competitively antifragile under a fluctuating optimal environment, mediated by eco-evolutionary dynamics. However, biomass, productivity, and resilience never benefit from fluctuations in this model. (4/4)
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Jonas Wickman @jonaswickman.bsky.social · 23/03/2026
In our first model, we examine under what conditions phytoplankton annual productivity is antifragile with respect to temperature and find that this is true at the community, but not species, level, and under top-down, but not bottom-up, control. (3/4)
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Jonas Wickman @jonaswickman.bsky.social · 23/03/2026
We propose that ‘antifragility’, coined by Nassim Taleb, is a great high-level concept for ecologists of all kinds for parsing and communicating the effects of environmental variability. An antifragile property benefits from variability. We explore its use in two mathematical models. (2/4)
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Jonas Wickman @jonaswickman.bsky.social · 23/03/2026
Happy to announce new paper with @chrisklausmeier.bsky.social and @elenalitchman.bsky.social in @asn-amnat.bsky.social in their new Inspiring Perspectives category! (1/4) www.journals.uchicago.edu/doi/10.1086/...
journals.uchicago.edu
University of Chicago Press Journals: Cookie absent
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International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 20/10/2025
📣Tomorrow our next series of online seminars restarts: Chris Klausmeier (MSU) will present: ⭐Microbial cross-feeding: coexistence and collapse, spatial patterns and population cycles⭐ Free and open to all: Zoom link: iite.info/seminar/ Global Times: www.timeanddate.com/worldclock/f...
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Reposted by Jonas Wickman
American Naturalist / ASN 🐌 @asn-amnat.bsky.social · 19/03/2025
Does availability of juvenile refuge affect size structure of adults? Uszko et al. show that size of streams used as nurseries impacts growth and size structure of lake trout by controlling the strength of cannibalistic mortality and resource competition. www.journals.uchicago.edu/doi/10.1086/...
journals.uchicago.edu
University of Chicago Press Journals: Cookie absent
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Reposted by Jonas Wickman
Giulia Ghedini @giuliaghedini.bsky.social · 18/03/2025
Happy to share our new paper! We tested how species evolve in response to #competition. We tracked the evolution of 3 #phytoplankton species, evolved alone or together. Our main finding is that #density-dependence weakens through #evolution to increase population production. doi.org/10.1002/ece3...
doi.org
Evolution Under Competition Increases Population Production by Reducing the Density‐Dependence of Net Energy Fluxes and Growth
Using experimental evolution, we determined the impact of intra- versus interspecific competition on three marine phytoplankton species. We found that the species achieved the same evolutionary outco....
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Jonas Wickman @jonaswickman.bsky.social · 13/03/2025
We find that even in two highly symmetric models, outcomes are highly idiosyncratic with more available resources sometimes leading to lower evolved consumer diversity for the same trade-off shape. (3/3)
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Jonas Wickman @jonaswickman.bsky.social · 13/03/2025
We develop some new tech to deal with high-dimensional resource space, where consumers’ uptake abilities for different resources are traded off against each other. We then assemble communities for different trade-off shapes and dimensionalities, to find when diverse communities evolve. (2/3)
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Jonas Wickman @jonaswickman.bsky.social · 13/03/2025
No more competing consumers than there are resources can coexist in equilibrium, but have you ever wondered how many consumers actually evolve as resource diversity increases? In our new paper, @chrisklausmeier.bsky.social and I investigate. (1/3) www.sciencedirect.com/science/arti...
sciencedirect.com
The effects of trade-off shape and dimensionality on eco-evolutionary dynamics in resource competition
Organisms invariably experience trade-offs in their capacities for interacting with their environments. In resource competition, this often means that…
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Reposted by Jonas Wickman
International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 13/03/2025
📆Join us next Tuesday for our online seminar: Hal Caswell (Woods Hole) will present on: ⭐The formal demography of kinship: Demographic stochasticity in the kinship network⭐ Free for all to join! Zoom Link: iite.info/seminar/ Global Times: www.timeanddate.com/worldclock/f... NB Euro time shift!
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International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 24/02/2025
📣Join us next week for the first talk of the year! Virginia Domínguez-García (EBD-CSIC, Seville) will present: ⭐Complex Networks to Understand Persistence in Empirical Plant-Pollinator Communities⭐ Zoom link: iite.info/seminar/ Global Times: www.timeanddate.com/worldclock/f... See you there!
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Brian J. Enquist @bjenquist.bsky.social · 09/05/2024
In our latest paper in PNAS, we ask: How can scientific progress be accelerated to meet the urgent challenges of the Anthropocene? We point to significant barriers in forecasting & prediction efforts for the biosphere 🧵👇 🧪🌎🦋 1/n www.pnas.org/doi/10.1073/... #ScienceTwitter #Ecology #Anthropocene
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Brian J. Enquist @bjenquist.bsky.social · 25/01/2024
Check out our new paper - Life history scaling in a tropical forest. Body size scaling & life history variation drive community structure & dynamics. Using a scaling framework, we quantify how abundance, richness, productivity & environmental variation link across life history strategies 1/n.... 🧪
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Géza Meszéna @gezam.bsky.social · 01/04/2024
IITE webinar Anuraag Bukkuri (Moffit Cancer Center): The Polyaneuploid Cancer Cell State and Therapeutic Resistance: Models of State-Structured Populations 2 April, 2024, 9 a.m. Pacific Zoom: liu-se.zoom.us/j/63158449287 🧪,🌍, #ecoevo
IITE webinar 
Anuraag Bukkuri (Moffit Cancer Center): 
The Polyaneuploid Cancer Cell State and Therapeutic Resistance: Models of State-Structured Populations
2 April, 2024, 9 a.m. Pacific 
Zoom: liu-se.zoom.us/j/63158449287
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Reposted by Jonas Wickman
Lucas Nell @lucasnell.bsky.social · 15/03/2024
Excited to share our new paper out in Science! We combined simulations, experiments, and field data to show how dispersal simultaneously stabilizes species and genetic diversity, which results in persistent eco-evo dynamics. doi.org/10.1126/scie...
doi.org
Dispersal stabilizes coupled ecological and evolutionary dynamics in a host-parasitoid system
Experiments and simulations show that dispersal maintains host genetic diversity and promotes host-parasitoid coexistence.
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Reposted by Jonas Wickman
Géza Meszéna @gezam.bsky.social · 19/02/2024
IITE webinar Axel Rossberg (Queen Mary): Ecological Structural Instability everywhere February 20, 2024, 9 a.m. Pacific liu-se.zoom.us/j/63158449287 🧪,🌍, #ecoevo
IITE webinar
Axel Rossberg (Queen Mary): 
Ecological Structural Instability everywhere 
February 20, 2024, 9 a.m. Pacific
liu-se.zoom.us/j/63158449287
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Jonas Wickman @jonaswickman.bsky.social · 15/02/2024
Our work ties scalings at different levels of organization to one another and to ecological and evolutionary mechanisms. As these scalings have mostly been studied in isolation, our work points the way towards integrated study for testing the interrelation of scalings. 5/5
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Jonas Wickman @jonaswickman.bsky.social · 15/02/2024
When parameterized with micro-scaling exponents our model predicts macro-scaling exponents between zooplankton biomass and phytoplankton biomass, and between phytoplankton mean body mass and biomass that agree remarkably well with observed macro scalings. 4/5
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Jonas Wickman @jonaswickman.bsky.social · 15/02/2024
We propagate estimates of micro-scaling exponents and their uncertainty through our model predictions into how state variables scale with nutrient enrichment (A). Estimates of micro-scaling exponents from the literature (B). Model-predicted scalings with enrichment (C, D). 3/5
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Jonas Wickman @jonaswickman.bsky.social · 15/02/2024
At the individual level, micro scalings relating to cell size determine many traits (F–I). These scaling relationships constrain eco-evolutionary dynamics (E), from which macro-level scaling relationships emerge across environmental gradients (A–D). 2/5
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Jonas Wickman @jonaswickman.bsky.social · 15/02/2024
Delighted to announce our new paper in Science. @chrisklausmeier.bsky.social, @elenalitchman.bsky.social, and I show how power-law scaling at the micro (individual) level is translated by eco-evolutionary dynamics into power-law scaling at the macro (food-web) level. 1/5
science.org
Eco-evolutionary emergence of macroecological scaling in plankton communities
Eco-evolutionary dynamics informed by allometric scaling can predict large-scale patterns across planktonic food webs.
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