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Corné de Groot

@cdegroot.bsky.social
441 followers 752 following 3 posts

Postdoc at UZH Zürich. Interested in eco-evolutionary dynamics of labile traits. Bird 🐦 and hiking ⛰️ enthusiast Plasticity | Social evolution | Indirect genetic effects | Multi-level phenotypes | Bayesian modelling

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Reposted by Corné de Groot
Erik Postma @erikpostma.bsky.social · 23/09/2026
Delighted to see this mammoth effort led by @sevans.bsky.social, together with @mevisser.bsky.social, Arie van Noordwijk and Henri Bouwmeester out in @plosbiology.org.
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Kate Laskowski @katelaskowski.bsky.social · 23/09/2026
This was such a monumental amount of work - we tracked groups of clonal fish from birth, all day, every day, for MONTHS, to figure out if we could predict group behavior. It's the coolest project giving us really great insight into what our expectations should be for group behavioral development!
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Tom Ratz @tomratz.bsky.social · 23/09/2026
Our new paper is out in @jevbio.bsky.social! Body size shapes aggression as well as how strongly individuals influence their opponents and how responsive they are to social interactions. @cdegroot.bsky.social @roriwijnhorst.bsky.social @dingemanselab.bsky.social doi.org/10.1093/jeb/...
Size-mediated differences in social responsiveness (left) and social impact (right). Here, individual i is smaller, more responsive to variation in opponent body size and elicits more aggression from opponents than individual j.
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SORTEE @sortee.bsky.social · 17/09/2026
Interested in helping make science a better place? Nominations for 2027 #SORTEE volunteer positions are open now! With 10 committees to choose from and so many ways to get involved, we welcome everyone to volunteer with us! Nominations close 31st Oct. sortee.org/join/ #openscience
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Erin Siracusa @erinsiracusa.bsky.social · 14/09/2026
Why do some animals have many social partners while others invest in a few strong relationships? Our new @royalsocietypublishing.org paper suggests the answer may be: it depends on the weather ☀️🌧️ 🐑 tinyurl.com/mry3mtpf
Soay sheep grazing on the island of Hirta, St Kilda, with dramatic misty cliffs and rough seas in the background
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Corné de Groot @cdegroot.bsky.social · 31/08/2026
New preprint! We show how plasticity, and modification of the behaviour of others (social responsiveness & impact) are integrated, and reduce individual variation in foraging pay-offs in producer-scrounger interactions @dingemanselab.bsky.social @roriwijnhorst.bsky.social @ali--wilson.bsky.social
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SORTEE @sortee.bsky.social · 24/08/2026
⏰ Final call: Nominations for the 2026 SORTEE Commendation Awards close in one week! Know a project promoting Open Science in ecology & evolution? Projects of any scale are welcome. Submit now: sortee.org/awards/ #OpenScience #EcoEvo #SORTEE
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LMU Open Science Center @lmu-osc.bsky.social · 19/08/2026
Presenting on Credible Research is Dr @malikaihle.bsky.social. Anyone can join this lecture virtually to learn about preregistration, how to make your own research credible and likely to be replicated, and more! Register here: bit.ly/4pI2GTC 📆 Monday, 07th September, 11:00-11:45 (CEST)
Green and white flyer advertising a public lecture titled “Credible research” as part of the OSC Open Science Summer School 2026. Visible on the poster are an image of the female speaker, a QR code, and various logos.
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Anonymous Potato @anonymouspotato.bsky.social · 05/08/2026
EcoEvoJobs 2026-27 just opened for business and we've already got 79 faculty / permanent jobs listed. Please repost! ecoevojobs.net
ecoevojobs.net
ecoevojobs.net 2026-27
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Aki Vehtari @avehtari.bsky.social · 13/08/2026
All four books I've co-authored are freely available online for non-commercial use: - Bayesian Workflow at avehtari.github.io/Bayesian-Wor... Links to other three books are in the quoted post 👇 (too many books to fit in one post!)
avehtari.github.io
Bayesian Workflow book: Website – Bayesian Workflow book
Website for the Bayesian Workflow book by Gelman, Vehtari, McElreath, et al. — case studies, code, and exercises in R and Stan.
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Jon Aguiñaga @jon-aguinaga.bsky.social · 03/08/2026
🚨 Behavioral ecologists 🚨 I am about ready to submit a review paper on animal contest behavior. If you have any high quality photos of your study system engaging in a dyadic interaction (fight), DM me. I am revising a figure that has photos of different study systems. Photo creds will be provided!
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SORTEE @sortee.bsky.social · 03/08/2026
🌟 Final month to nominate projects for the 2026 SORTEE Commendation Awards! Know a project promoting Open Science in ecology & evolution, such as workshops, tools, repositories, outreach & more? Projects can be local or global, team-based or individual. sortee.org/awards/
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BirdLife Europe & Central Asia @birdlifeeurope.bsky.social · 24/07/2026
Birds on the € notes!? You can make it happen! 🐦✨ Vote now for your favourite design! www.ecb.europa.eu/euro/banknot... The European Central Bank is redesigning the euro banknotes and is asking the public for feedback. And one of the themes is birds and rivers...😈
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Pietro Pollo @pietropollo.bsky.social · 24/07/2026
Honoured to be one of the winners of the early research career award at #isbe2026
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Merit F Pokriefke @pokriefkemeritf.bsky.social · 17/07/2026
Excited to share that our preprint is now available! 🐦🐛 We explore individual variation in dietary specialisation using DNA-metabarcoding and field based analysis of personality and competition. Go have a look!
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Edward R. Ivimey-Cook @eivimeycook.bsky.social · 21/06/2026
Just updated *READMEBuilder*. Some key mentions: 1. It now produces a nice ASCII map of the directory structure which is added to the README. 2. Allows for data- and code-specific licenses to be specified. 3. Allows you to edit previously made READMEs from READMEBuilder. 4. Various bug fixes!
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SORTEE @sortee.bsky.social · 13/06/2026
🎉Registration for the SORTEE Conference 2026 (13-14 Oct) is now open! 🎉 Register here: www.sortee.org/upcoming The conference is FREE for members, so consider joining us — also with a free ‘no questions asked’ option! www.sortee.org/join/
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Jordan S. Martin @jsmartin.bsky.social · 20/04/2026
Our paper on generalized dynamic phylogenetic models is finally out in MEE 🥳 The brainchild of @err-ring.bsky.social, GDPMs open up a vast new space for comparative studies on complex, coevolving traits, greatly aided by @scottclaessens.bsky.social's work on the accompanying R package. Check it out!
besjournals.onlinelibrary.wiley.com
Trait coevolution and causal inference using generalized dynamic phylogenetic models
Phylogenetic comparative methods are widely used to study trait coevolution across biological and cultural domains. The most common methods are phylogenetic generalized linear (mixed) models, phyl...
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Rori Wijnhorst @roriwijnhorst.bsky.social · 07/04/2026
Have you heard of the impact-and-responsiveness model? It's a way to quantify individual differences in social interactions. Curious how it works, performs across study designs, and compares to other approaches? Check out our paper (also the first chapter of my PhD) 👇 doi.org/10.1093/jeb/voag013
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Journal of Evolutionary Biology @jevbio.bsky.social · 06/04/2026
New method for studying social responsiveness and social impact: both shape the expression of social traits. Ignoring variation in responsiveness can limit understanding of social trait evolution: @roriwijnhorst.bsky.social @cdegroot.bsky.social @dingemanselab.bsky.social doi.org/10.1093/jeb/...
doi.org
Decomposing social interactions: a statistical method for estimating social impact and social responsiveness
Abstract. Social interactions mediate the phenotypic expression of fitness-relevant traits. The expression of such labile social traits includes three dist
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SORTEE @sortee.bsky.social · 26/03/2026
🇨🇦 SORTEE Canada Chapter Based in Canada and interested in open, reliable, transparent ecology & evolution research? 👉 Fill out our expression of interest form (tinyurl.com/yxayj9yd) to connect, share ideas, and help shape future local activities! 😊
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SORTEE @sortee.bsky.social · 24/03/2026
🔊SAVE THE DATE for our 6th SORTEE conference: 13-14th Oct 2026! Registration & content submission (unconferences, hackathons, workshops) will open soon. Keep an👁️on sortee.org/upcoming/ #SORTEE2026 To join the mailing list for conference updates, click: docs.google.com/forms/d/e/1F...
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Edward R. Ivimey-Cook @eivimeycook.bsky.social · 13/03/2026
🧵 New paper out today in @peercommunityin.bsky.social Journal! @joelpick.bsky.social et al. introduce the first standardised guidelines for data & code quality control in #ecology & #evolutionarybiology, on behalf of @sortee.bsky.social 🔓 doi.org/10.24072/pcj... #OpenScience #EEB [1/5]
doi.org
The SORTEE guidelines for data and code quality control in ecology and evolutionary biology
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SORTEE @sortee.bsky.social · 12/03/2026
Want to start a local #SORTEE chapter? 🌍 Here’s how Raquel Turba launched the Brazil chapter for some inspiration!👇 sortee.org/blog/2026/03... Interested in your own? Reach out to us!
sortee.org
My experience starting the SORTEE Brazil chapter
SORTEE blog
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Dax Kellie @daxkellie.bsky.social · 10/03/2026
In one week I'll be talking about tips for reproducible R code and why science would love you to try these tips on your own code too 🧪😍🌏 It's an online talk, so feel free to watch comfortably from your couch. Hope to see you there! @sortee.bsky.social #rstats events.humanitix.com/sortee-webin...
events.humanitix.com
SORTEE Webinar: On what makes good sharable and reproducible R code, how to do it, and why it’s good for science
For this month's SORTEE webinar, Dr. Dax Kellie from the Atlas of Living Australia will present on good, sharable, and reproducible R code in science
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Alfredo Sánchez-Tójar @asanchez-tojar.bsky.social · 03/04/2025
Our paper investigating reproducibility potential in ecological journals without a code-sharing policy is now @peercomjournal.bsky.social 📰 doi.org/10.24072/pcj... 💻 github.com/ASanchez-Toj... We've shared our results already (bsky.app/profile/asan...), so we won't bother you again. Instead...👇
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Jordan S. Martin @jsmartin.bsky.social · 02/02/2026
I am looking for a PhD student to join my new Socio-Eco-Evo group, hosted in Katie Peichel's Evolutionary Ecology Division @ University of Bern. We're offering a fully funded 4-year position, studying social plasticity and behavioral adaptation among stickleback in Greenland. Please share around!
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Jørgen Søraker @jorgensoraker.bsky.social · 04/03/2026
📑📊We have just uploaded a new pre-print where we decompose spatial, temporal and spatial-temporal variation in natural selection on reproductive traits for great tits and blue tits. With Yimen Araya-Ajoy, @ellafcole.bsky.social and @sheldonbirds.bsky.social www.biorxiv.org/content/10.6...
biorxiv.org
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Saoirse Kelleher @saoirsekelleher.eco · 24/02/2026
Coming up in March! Join @sortee.bsky.social for a webinar with @daxkellie.bsky.social on good, shareable, and reproducible R code - register here: events.humanitix.com/sortee-webin...
events.humanitix.com
SORTEE Webinar: On what makes good sharable and reproducible R code, how to do it, and why it’s good for science
For this month's SORTEE webinar, Dr. Dax Kellie from the Atlas of Living Australia will present on good, sharable, and reproducible R code in science
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Edward Grey Institute @egioxford.bsky.social · 20/02/2026
New research just out in J Evol Biol: led by @lbliard.bsky.social with @jsmartin.bsky.social @dzchilds.bsky.social @paniw.bsky.social & Arpat Ozgul using the very cool Covariance Reaction Norm approach to test environmental dependence of trade-offs in great tits academic.oup.com/jeb/advance-...
Figure showing how the correlation between mass and recruitment in Wytham Great Tits depends on environmental conditions - in particular note switch from almost none to very strong with increasing population density
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Journal of Evolutionary Biology @jevbio.bsky.social · 20/02/2026
Social partners shape phenotypes in house sparrows: direct & indirect social effects covary in producer-scrounger tactics, forming a multivariate syndrome that constrains trait variation: academic.oup.com/jeb/advance-... @cdegroot.bsky.social @roriwijnhorst.bsky.social @dingemanselab.bsky.social
academic.oup.com
Among-trait covariance and cross-year repeatability for direct and indirect individual effects in producer–scrounger behaviour in wild house sparrows
Abstract. Variation in traits expressed during social interactions can be attributed to direct individual effects (DIEs) of the focal individual’s identity
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Edward R. Ivimey-Cook @eivimeycook.bsky.social · 16/02/2026
We've just updated the @sortee.bsky.social guidelines for data and code review following great feedback at @peercommunityin.bsky.social. ecoevorxiv.org/repository/v... We now have an app: github.com/SORTEE/DCQC and a website: eivimeycook.github.io/DCQC/
ecoevorxiv.org
The SORTEE Guidelines for Data and Code Quality Control in Ecology and Evolutionary Biology
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Corné de Groot @cdegroot.bsky.social · 09/02/2026
Happy to share that our work on direct & indirect social effects in producer-scrounger behaviours was recently published in JEB: academic.oup.com/jeb/advance-... @roriwijnhorst.bsky.social @dingemanselab.bsky.social @ali--wilson.bsky.social
academic.oup.com
Among-trait covariance and cross-year repeatability for direct and indirect individual effects in producer–scrounger behaviour in wild house sparrows
Abstract. Variation in traits expressed during social interactions can be attributed to direct individual effects (DIEs) of the focal individual’s identity
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Jordan S. Martin @jsmartin.bsky.social · 05/02/2026
I hope to see some of you in Bielefeld for this upcoming workshop on measuring and modeling plasticity. ECRs in and around Germany with a penchant for statistics should consider applying while spots remain available!
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EcoEvoRxiv @ecoevorxiv.bsky.social · 29/01/2026
"Body size shapes average behaviour, social impact, and social responsiveness in agonistic interactions" doi.org/10.32942/X2H...
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Methods in Ecology and Evolution @methodsinecoevol.bsky.social · 07/11/2025
📖Published📖 Check out MEE's new review article 👉 Full decomposition of phenotypic variance in dichotomous traits: New methods and key implications for behaviour, demography and evolutionary ecology 🌍 🧪 buff.ly/IMsl7eL
Illustration of how additive variation on the latent liability scale becomes partly non-additive on the dichotomous phenotypic scale.
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Michał Jezierski @jezierskimt.bsky.social · 29/10/2025
New paper today in Proc B @royalsociety.org. We explored nest architecture in 3,685 species of birds, modelling the multivariate nature of nests, i.e. how shape, location or attachment co-occur. Then we explored how the environment affected nest architecture evolution. Spoilers in the title! 🪺🐦🌍
royalsocietypublishing.org
A wide range of abiotic and biotic variables leaves most variation in bird nest architecture unexplained | Proceedings of the Royal Society B: Biological Sciences
Nests are the locations or containers for offspring, and mediate interactions between offspring and the environment. However, understanding how environmental factors shape the evolution of nest archit...
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Cecilia Baldoni @cecibaldoni.bsky.social · 28/10/2025
📚 We just launched a guide on starting code clubs—born from #SORTEE (un)conference! Real tips, real experiences, from the community to the community! Read it, use it, adapt it, and most importantly, help us make it better! Open science communities for the win! 💙💚 sortee.github.io/start-your-c...
sortee.github.io
How to Start Your Own Code Club – How to Start Your Code Club
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Saoirse Kelleher @saoirsekelleher.eco · 17/10/2025
Happy to announce the next edition of the @sortee.bsky.social Workshop & Webinar series on October 27 at 16:00UTC, ‘The Risks and Rewards of Large Language Models in (open) Scientific Research’ with @tanyadoesscience.bsky.social !! Sign up here: events.humanitix.com/sortee-webin...
events.humanitix.com
SORTEE Webinar: The Risks and Rewards of Large Language Models in (Open) Scientific Research
SORTEE Workshop & Webinar Series
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Natalie E. van Dis @disnatalie.bsky.social · 24/10/2025
📢4-year fully funded #PhD on seasonal timing of egg overwintering insects 🦋🦗🪳 🔬Identify universal mechanisms underlying #insect egg developmental time under #ClimateChange 📌@niooknaw.bsky.social @animalecol-nioo.bsky.social ℹ️ vacatures.knaw.nl/job-invite/2... ❗Application deadline: 7 December 2025
vacatures.knaw.nl
PhD Seasonal Timing of Egg Overwintering Insects under Climate Change - NIOO-KNAW - Wageningen
PhD Seasonal Timing of Egg Overwintering Insects under Climate Change - NIOO-KNAW - Wageningen
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Hannah Scharf @hannah-scharf.bsky.social · 15/10/2025
Does anyone know of a nice guide for students (bachelor and master's level) on how to lead group paper discussions that they could share with me? What would be especially great are examples of the types of questions they should ask the group.
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Barbara Class, Ph.D. (she/her) @barbaraclass.bsky.social · 15/10/2025
🌍 Join SORTEE – A worldwide Open Science community for ecology and evolution! 🌱🧬 🌐 Join trainings, code clubs & our annual online conference 🚀 Help shape the future of Open Science Membership is inclusive and flexible. 👉 Learn more: www.sortee.org/join/ #OpenScience #Ecology #Evolution
sortee.org
Join
Join Society for Open, Reliable, and Transparent Ecology and Evolutionary biology (SORTEE)
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Saoirse Kelleher @saoirsekelleher.eco · 03/10/2025
Do you run or participate in a code club at your institution, or are you interested in starting one but don’t know where to begin? @cecibaldoni.bsky.social and I are leading an ‘unconference’ discussion at @sortee.bsky.social’s virtual conference on October 16 - come share some tips and ideas!
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ISBE2026 @isbe2026.bsky.social · 30/09/2025
#ISBE2026 Call for Abstracts is now open! Submit your abstract by 15 December 2025 on www.isbe2026.com @behavecol.bsky.social
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Cecilia Baldoni @cecibaldoni.bsky.social · 17/09/2025
PhD Alert! 😍 Our lab is hiring a PhD student to study how shrews shrink in winter and grow in spring. Yes, you read that right! tinyurl.com/shrinkingshr... Join us at the @mpi-animalbehav.bsky.social, study a super cool animal, and join the @imprs-qbee.bsky.social community! DM me for questions!
imprs-qbee.mpg.de
Seasonal size change and aging in shrews
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Royal Society Publishing @royalsocietypublishing.org · 17/09/2025
New in #ProcB - From policy to practice: Progress towards #data- and #code-sharing in ecology and evolution @asanchez-tojar.bsky.social @eivimeycook.bsky.social tell us more in our blog royalsociety.org/blog/2025/09...
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SORTEE @sortee.bsky.social · 17/09/2025
Register now for #SORTEE2025 conference! We thank our sponsors (@asn-amnat.bsky.social, @cdnsciencepub.com, @datadryad.bsky.social, @peercommunityin.bsky.social, @royalsociety.org, @sse-evolution.bsky.social, @biologists.bsky.social) who are eligible for free registration.
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Joel Pick @joelpick.bsky.social · 15/09/2025
Interested in simulating the kind of data that you might commonly find in evolutionary and ecological studies? Then we have the R package for you - squidSim!! Check our new preprint: ecoevorxiv.org/repository/v...
ecoevorxiv.org
squidSim: a flexible R package for structured and reproducible simulations in Ecology and Evolutionary Biology
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Ned Dochtermann @neddochtermann.bsky.social · 08/09/2025
New preprint out from the lab, including @rroyaute.bsky.social: www.biorxiv.org/content/10.1... In this we test what we refer to as the "standard model" of behavioral variation. This was inspired by recent work identifying intra-genotypic variation as a major contributor to "individuality". 1/
biorxiv.org
Genetic and environmental sources of behavioral individuality: a test of the standard model
Behavioral variation is typically assumed to arise from the combination and interaction of genetic and environmental variation. However, recent work with genetically identical individuals has found th...
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Joel Pick @joelpick.bsky.social · 15/08/2025
🚨Introducing the @sortee.bsky.social Guidelines for Data and Code Quality Control in Ecology and Evolutionary Biology🚨 doi.org/10.32942/X24... Increasingly E&E journals are recruiting data editors. We provide standardised guidelines for journals with data editors and those wanting to recruit them 🧵
doi.org
The SORTEE Guidelines for Data and Code Quality Control in Ecology and Evolutionary Biology
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