Souleyman Bakker

Colline d’Hollywood. L’inscription « Hollywood » a été remplacée par « Nom Ville »

Figure demonstrating how the ordering of temperatures through time determines whether an ectothermic population experiencing those temperatures will go extinct

Thrilled to share that my first dissertation chapter is now published at Ecology! dx.doi.org/10.1002/ecy....

We embed TPCs into population dynamics to show how changing temperatures' ordering — not just its distribution — increases extinction risk (i.e. heatwaves matter!)

@esajournals.bsky.social

I am still actively looking for postdoc positions — please lmk if you (or your friends and colleagues) need a hardworking postdoc with field, lab, and bioinformatic skills!

I am broadly interested in evolution in the ocean, conservation and population genetics, and rapid evolution.

Published 📖

A general method for detection and segmentation of terrestrial arthropods in images🪲

flatbug offers ecologists and practitioners a ready-to-use, efficient and accurate tool for arthropod monitoring that addresses common limitations of existing methods 👇️

Un pays, deux écoles.

L’école privée, massivement financée sur fonds publics, disloque notre société en séparant sa jeunesse.

50% d'élèves dans le privé à horizon 2030 à Paris, c'est délirant.

Our package estar for quantifying ecological stability is out: MEE @britishecologicalsociety.org! Provides 11 stability metrics for measuring stability at different levels of organization, from individuals to populations, communities + ecosystems. besjournals.onlinelibrary.wiley.com/doi/10.1111/...

I started making this R package 6 years ago. I finally have it in a state I'm happy with, thanks to Claude Code #Rstats github.com/MattCowgill/...

Great opportunity to interact with the French Community of Ecological Theory: "Biodiversity in Equations" Conference in Montpellier, France on April 9 and 10, 2026, organized by GDR TheoMoDive and SFE2.
Registration is free! Find more info here: biodiveq.sciencesconf.org?forward-acti...

You know what they’re going to store in those warehouses?

People

Environmental conditions shape the global distribution of ant societies | PNAS Sociality has evolved several times and is a key strategy for overcoming environmental challenges and promoting ecological success. Yet, it remains...

Our new study is out in @pnas.org ! 🐜🌍
We show that the environment shapes how ant societies are distributed across the world. Accessible here:
www.pnas.org/doi/10.1073/...

No kidding. If you had been paying any attention whatsoever, you would know crypto is the worst….

Hommage à El Hacen DIARRA (31/12/1990 - 14/01/2026) mort entre les mains de la police du 20ème arrondissement dans la nuit du 14 au 15 janvier 2026 Foyer Père Lachaise-Mûriers, coin de la rue Fernand Léger et la rue des Pruniers, dimanche 18 janvier 2026 à 14h El Hacen DIARRA était un jeune homme mauritanien hébergé par son cousin au foyer 16 rue Fernand Léger, Paris 20ème, métro Père Lachaise. Le mercredi soir 14 janvier, à la suite du match entre le Sénégal et l'Égypte, il est descendu déposer un sac d'ordures à la poubelle. Ensuite il est sorti du foyer en shorts et tongs pour boire un café et fumer une cigarette sur le côté rue des Pruniers. Une voiture de police est passée par là, s'est arrêtée. Une conversation avec les policiers s'est enclenchée. Les policiers ont voulu palper le jeune homme. Celui-ci a protesté et ne voulait pas que les policiers le touchent. Une bagarre a éclaté, un coup de taser est parti, des voitures de renfort sont arrivées. Le jeune homme en sang a été embarqué dans une des fourgonnettes, direction le commissariat. Le lendemain matin, inquiète, sa famille s'est présentée au commissariat du 20ème pour prendre des nouvelles. Au début les agents du commissariat ont refusé de donner des informations. Ensuite une policière les a amenés dans un autre commissariat du côté de République et on leur a dit que El Hacen était mort. Suite à Lamine Dieng (2007), suite à, Adama Traoré (2016), Liu Shaoyao (2017), Gaye Camara (2018), Aboubacar Fofana (2018), et de nombreux autres, El Hacen prend sa place dans la longue liste de victimes de l'usage disproportionné de la force mortelle par la police française et de la culture d'impunité cultivée en son sein. Un hommage et un moment de recueillement lui sera rendu par sa famille au lieu même de l'interpellation dimanche 18 janvier à 14h.

El Hacem Diarra, a été tué parce qu’il a refusé de se faire palper. Tasé, interpellé, il a fini par être tué par des policiers, à l’abri de tous les regards dans le commissariat.

Aucune info dans les médias, rien… Pas de vidéo pas de scandale.

Racisme, impunité, la police quoi.

Is there a mathematics of discontinuous behavior? Christopher Zeeman was a leading proponent of Catastrophe Theory, a topological approach to sudden change that underpins much of today’s work on tipping points. This is his beautiful 1976 paper in @sciam.bsky.social www.jstor.org/stable/pdf/2...

Tips and tricks for writing constructive peer reviews Peer review has been the cornerstone of scientific inquiry for centuries and is considered the backbone of scientific quality and rigour (Spier, 2002). Des

In my first Editorial as Associate Editor for @conphysjournal.bsky.social, we help combat this lack of training by providing some "tips and tricks" for writing constructive peer reviews, based on our collective experiences as editors for multiple scientific journals.

Giant springtail, Tetrodontophora bielanensis, Onychiuridae very tiny squishy looking black bug type beast on an orange leaf

one of the animals of all time

Lu ce matin dans @lefigaro.fr, qui a rencontré l'ancien président pour la sortie (le 10 décembre) de son « Journal d'un prisonnier ».

Not Gorafi.

TRAVAIL : VOTRE MÉTIER EST-IL INUTILE ? YouTube video by BLAST, Le souffle de l'info

IRL on me dit ne pas voir sur YT notre nouveau format avec Lumi sur le Travail donc n'oubliez pas le 👄 à 👂

On questionne l’utilité du travail sous le capitalisme. Est-on payé à détruire la 🌍 & exploiter les autres?
Pq les boulot du care si important sont-ils si mal payés?
youtu.be/8zmx_UJRGLI?...

Time‐structured models of population growth in fluctuating environments Although environmental variability is expected to play a more prominent role under climate change, current demographic models that ignore the differential environmental histories of cohorts across...

📖 Published📖

In this recent paper, the authors create a new class of time structured model that better predicts population growth in a variable world 🌍 🧪 🖥️

🔎 Read here:

Je sais pas si on percute que certains pensent cadrer les pratiques alimentaires des adolescents tout en refusant catégoriquement de cesser de boire sur leur lieu de travail.

Au-delà des garanties d'anonymat, le fait de produire des statistiques sur les orientations politiques des agents de la fonction publique ne peut QUE mener à les jeter à la vindicte de médias ultra orientés, alors que la seule question est de savoir s'ils font bien leur travail.

Model is: b3 <- scasm( y ~ s(x0, bs = "bs", k= k) + s(x1, bs = "sc", xt = "m+", k = k) + s(x2, bs = "bs", k = k) + s(x3, bs = "bs", k = k), family=poisson, bs=200 ) The second smooth `s(x1) is a shape constrained smooth with a positive monotonicity constraint (xt = "m+"). The `bs = 200` arguments uses 200 boostrap samples, which generates bootstrap distributions for each coefficient in the model. These bootstrap samples respect the shape constraints, while the usual +/- 2 SE credible intervals may not. The uncertainty in the partial effects is shown by two credible interval bands; a dark blue central band is a 68% Bayesian credible interval, while the lighter blue outer interval is a 95% Bayesian credible interval. The background of each panel is light grey with white grid lines, in a similar style to ggplot2's default theme.

A new release of the mgcv #RStats 📦 is out on CRAN and Simon Wood (U Edinburgh) has added some significant new features despite the small bump in version number:

🌟 scasm() for estimating GAMs with shape constrained smooths. Can be used with any family & smoothness selection is via the EFS method

Communiqué n°2 : Notre colloque se tiendra, comme prévu, les 13 et 14 novembre prochains. Le colloque « La Palestine et l’Europe » se tiendra les 13 et 14 novembre, réaffirmant la liberté académique et le partage du savoir.

carep-paris.org/annonce/comm...

🐜❌Effects of environmental and individual variation on time patterns of extinction in small experimental populations

vist.ly/4bdf5

Decliningpopulations #Collembola #ExtinctionVortex #FolsomiaCandida, #LongTransients, #EnvironmentalEffects #SmallPopulationParadigm

Happy to announce an open post-doctoral position (24 months) in the ThéMA lab (Besançon, CNRS-Univ.Marie et Louis Pasteur) to work on the coupled modelling of population genetic structure and metacommunity dynamics in habitat networks. Details here: shorturl.at/7muyx
For any questions, contact me!

An infographic showing global economic figures related to nature and biodiversity, displayed in a circular format with a money/globe illustration at the center. The data points are presented in descending order: Global GDP: $105.6 trillion GDP from nature-dependent sectors: $58 trillion Nature decline externalities: $10.7 trillion Subsidies to nature-declining sectors: $1.4-$3.3 trillion Global biodiversity financing gap (annual until 2030): $598-$824 billion Current global biodiversity funding: $135-$156 billion The center features a mint green globe with stylized stacks of money and coins in front, using green and yellow colors. The data is arranged in a semi-circular arc, with monetary values shown in green and purple text. The visualization uses a clean, minimalist design with clear typography.

The global economy depends on #nature but also has an impact on nature. Learn more about these interactions with this graphic from the @ipbes.net #TransformativeChange Assessment Report.

Read the Summary for Policymakers: www.ipbes.net/transf...

#BranchingProcesses #Collembola #ExtinctionVortex #FolsomiaCandida, #LongTransients, #EnvironmentalEffects #SmallPopulationParadigm

Our study on extinction risks in small parthenogenetic Folsomia candida populations shows how founder life stage and culling shape survival. Found that extinction risks can persist longer than expected, with transient dynamics mimicking stability prior to an extinction vortex.

Effects of environmental and individual variation on time patterns of extinction in small experimental populations Predicting the fate of small populations is essential in ecology, epidemiology and conservation biology. Small populations can go extinct quickly or can develop into large established populations. Th...

Our article is now out in Oikos! If you are interested in exploring extinction probabilities in small populations ⬇️

@thomastully.bsky.social @ieesparis.bsky.social @vpa-paris.bsky.social

@oikosjournal.bsky.social

nsojournals.onlinelibrary.wiley.com/doi/full/10....

Müllerian Mimicry in Neotropical Butterflies: One Mimicry Ring to Bring Them All and in the Jungle Bind Them Aim Uncovering the effects of Müllerian mimetic interactions on the evolution of species niches and geographic distributions at a continental scale. Location Neotropics and part of Nearctic. Tim...

Finally published my master’s work in Global Ecology and Biogeography! 🦋🌎Huge thanks to all coauthors for their patience and support during this project. If you’re interested in butterflies/mimicry/biogeography, or just curious, you can read it here: onlinelibrary.wiley.com/doi/10.1111/...