Violeta Calleja's Avatar

Violeta Calleja

@violetacalleja

Postdoc @ebdonana.bsky.social Exploring ecological interactions through the lens of Complex Systems 🌱 violetavivi.github.io

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24.10.2023
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Latest posts by Violeta Calleja @violetacalleja

New blog post:

"Higher orders need higher standards"

skewed.de/lab/posts/hi...

I discuss our current work disentangling misconceptions around "higher-order" networks: arxiv.org/abs/2602.16937

Explainer thread for the paper here: bsky.app/profile/tiag...

23.02.2026 09:38 👍 40 🔁 21 💬 1 📌 3
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The NYT style guide

02.03.2026 04:09 👍 8201 🔁 3316 💬 70 📌 105
TENET@NetSci2025

📣 Join us for the TENET satellite at @netsciconf.bsky.social in Boston!
Following the enthusiasm for last year’s editions, we're bringing together researchers working on Temporal Networks!
✏️2 pages abstracts
📆 Submit by Feb 20, 2026
🔗 more info here: tinyurl.com/4zevnyft

29.01.2026 13:00 👍 2 🔁 6 💬 0 📌 0
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‘The Ecology of Ecologists’: what, if anything, is ecology? (book review) What, if anything, is ecology? You would think I’d know that – I’ve been a practicing (academic) ecologist for about 40 years. But I don’t. Sure, I know some stuff. I know that ecology isn’t the sa…

Jeremy Fox has a new book out, 'The Ecology of Ecologists'. What's that about, and should you read it? (Quick answers: how ecology's chaos of approaches is a feature, not a bug; and YES.) scientistseessquirre... 🌍🧪

17.02.2026 13:04 👍 26 🔁 8 💬 1 📌 0

Congrats Dr Maull!

17.02.2026 14:56 👍 1 🔁 0 💬 0 📌 0
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The “Epstein Files” and the anatomy of hidden social networks How secrecy reshapes structure and why its analysis is conditional on the data

A lot of “network analysis” about the Epstein Files.

Nearly all of them missing the point: when a system operates under strong incentives for discretion, what gets documented is NOT a neutral sample of reality.
Results are conditional on what is observed!

open.substack.com/pub/manlius/...

16.02.2026 12:43 👍 16 🔁 9 💬 1 📌 0
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☀️ 2026 Summer School in the Pyrenees - Unifying Mathematical Models of Biodiversity
Applications are now open!
This school offers a state-of-the-art overview for interdisciplinary theoreticians.
🗓️ July 5-11
🎯 PhD students to senior researchers
ℹ️ intp.science/en/summer26....
📭 contact@intp.science
🌐🧪

28.01.2026 10:39 👍 18 🔁 10 💬 0 📌 1

Apply now to become a member of the Advisory Board!

10.02.2026 15:06 👍 2 🔁 3 💬 0 📌 0
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Excited to share a new PhD thesis from my student and soon Dr @vmaull.bsky.social on synthetic ecosystems, preventing tipping points, and a new concept: emergent bioengineering. Very proud of this achievement, and thankful to @sfiscience.bsky.social, where many of these ideas came to life.

06.02.2026 13:30 👍 35 🔁 8 💬 2 📌 0
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📣We will be back soon with a new series of online theory seminars!

As ever, free and open for all via Zoom. Follow us on here, or join our email list (iite.info/seminar-emai...) for details.

In the meantime, all our past talks are on Youtube: www.youtube.com/@theoretical...

See you there!

06.02.2026 10:10 👍 18 🔁 13 💬 0 📌 0
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🌱🧩 La semana pasada tuvo lugar en Sevilla la 4ª Reunión de la Sociedad Española de Sistemas Complejos, organizado por nuestras investigadoras @violetacalleja.bsky.social y @domgarvir.bsky.social y la @unisevilla.us.es.

La investigadora @paniw.bsky.social fue una de las conferenciantes invitadas.

29.01.2026 08:30 👍 13 🔁 8 💬 0 📌 1
Call for Participants - complexitynextgen Menu Call for Participants – Call For Scholarships Deadline: 28 Feb 2026 Are you a curious and motivated young researcher interested in complex systems? Are

The call for participants for Complexity72h is finally open! Apply by February 28 for the best collab ever!

Why???
✨ Amazing projects
👩‍🏫 Fantastic tutors
📍 A great location

👉 Apply now: www.complexitynextgen.org/complexity72...

Do you REALLY need anything else to be convinced?
We didn’t think so.

19.01.2026 15:21 👍 12 🔁 12 💬 0 📌 4
Pablo Valgañon during his talk

Pablo Valgañon during his talk

Pablo Valgañon presenting our results

Pablo Valgañon presenting our results

@pvalganon.bsky.social from @paleoipe.bsky.social group at the @ipe-csic.bsky.social presenting our work on causal networks in pleoecology at the CS3 meeting @cs3conference.bsky.social taking place in Sevilla.

22.01.2026 13:33 👍 5 🔁 4 💬 0 📌 0
FisEs Joven'26 Esta cuarta edición, celebrada del 10 al 12 de marzo de 2026, tendrá lugar de forma gratuita y virtual mediante la plataforma Zoom.

¡Hola a todos! Esperamos que hayáis disfrutado de las fiestas. Os recordamos que el cierre de contribuciones es el 12 de enero. ¡No os quedéis fuera!

Más información en: fisesjoven26.gefenol.es

08.01.2026 21:02 👍 4 🔁 3 💬 0 📌 0

I'm really happy to see this article being published!

I find it very intriguing that the topology of genotype networks, which reflects the exploration of the antigenic space, can alone be enough to explain seasonality in epidemic trajectories.

08.01.2026 13:34 👍 6 🔁 1 💬 0 📌 0

Una pena que la universidad no tenga un grado en bellas artes y tenga que hacer un vídeo con IA de estatuas sin pies ni manos...

17.12.2025 14:20 👍 1 🔁 0 💬 0 📌 0
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🚨 What if evolution is the ”law”… and networks are the machines that do the work?

In this paper (just published) I try to formalize how living systems are non-equilibrium, information-processing, adaptive matter. With a great biological flavor! 🧪🌐🌍🧬🦠

👉 iopscience.iop.org/article/10.1...

🧵 1/

16.12.2025 09:04 👍 134 🔁 44 💬 8 📌 3
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Context Widows or, of GPUs, LPUs, and Goal Displacement

Nature would do well to publish more content like this thoughtful piece from @kevinbaker.bsky.social and fewer Buzzfeed listicles gussied up as career advice "Five productivity hacks for using AI in your scientific workflow"

15.12.2025 19:13 👍 130 🔁 39 💬 5 📌 15
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Avi Loeb y los científicos que se pasan al ‘lado oscuro’: cuando el enemigo de la razón duerme en casa Figuras como el físico de Harvard, que defiende que los cometas interestelares podrían ser naves alienígenas, erosionan la credibilidad de la ciencia desde dentro. Sus perfiles prosperan en un ecosist...

Manudo articulazo se ha marcado @aberron.bsky.social sobre los científicos que se pasan al lado oscuro. En @eldiario.es , www.eldiario.es/sociedad/avi...

14.12.2025 10:05 👍 17 🔁 8 💬 1 📌 0
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Our new science exhibition “The Invention of Time” has just opened in Barcelona. Come explore time in physics, brains & life, from Evolution 2 relativity. We even have a working Time Machine (that’s me using it) @ibe-barcelona.bsky.social @icreacommunity.bsky.social museuciencies.cat/en/exposicio...

13.12.2025 20:26 👍 45 🔁 12 💬 1 📌 1
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Population Structure Plays a Key Role in Community Stability Population structure is a widespread yet underappreciated feature of ecological communities. Here, we develop a general theoretical framework integrating life-stage structure into community matrix mo...

New article out in Ecology Letters!

Developing a general math model, we show how cross-stage interactions modify the stability predicted by classic unstructured models.

📄 Population Structure Plays a Key Role in Community Stability. @ox.ac.uk @ifisc.uib-csic.es @ceabcsic.bsky.social @csic.es

09.12.2025 09:39 👍 19 🔁 8 💬 1 📌 0

Looking forward to the Modern Coexistence Theory workshop tomorrow.

Please repost :)

07.12.2025 21:54 👍 23 🔁 27 💬 0 📌 0
Open Letter of the Complex Systems Society on academic freedom and human rights.pdf

The @cssociety.bsky.social has issued an open letter on academic freedom and human rights following the non-stop genocide in Gaza:

drive.google.com/file/d/1-q5E...

05.12.2025 15:27 👍 4 🔁 3 💬 0 📌 0
FisEs Joven'26 Esta cuarta edición, celebrada del 10 al 12 de marzo de 2026, tendrá lugar de forma gratuita y virtual mediante la plataforma Zoom.

🚨🚨 ¡Atención! 🚨🚨

La IV edición del congreso FisEs Joven, un congreso online dedicado a jóvenes investigadores e investigadoras en física estadística, se celebrará los días 10, 11 y 12 de marzo. (1/2)

03.12.2025 10:40 👍 10 🔁 9 💬 1 📌 1

hmm I concede. Let's say that we got a sweet point in the 00s, and right now we are at the other side of the curve, where finding "information" is quick, but the quality is worsening. Ex: searching for images and finding AI-generated ones

02.12.2025 11:20 👍 1 🔁 0 💬 1 📌 0

The amount of time and work needed back then still is small compared with the amount of time we *waste* on the byproducts of today’s Internet aka social networks and shitty AI web search‘s results

02.12.2025 08:55 👍 0 🔁 0 💬 1 📌 0

Congrats Nerea! 🐝 🕰️

02.12.2025 08:49 👍 2 🔁 0 💬 0 📌 0
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Generalized plant–pollinator phenological climate‐driven advances still lead to a decline in phenological overlap Climate change is altering the phenology of interacting species, potentially leading to mismatches in the timing of their interactions. This may affect the delivery of key ecosystem services such as ...

My 1st thesis chapter is out in #EcologicalMonographs! 🎉
With @curromolina.bsky.social @ibartomeus.bsky.social
How is #climatechange reshaping plant–pollinator timing (phenological overlap) in Mediterranean ecosystems? Can #biodiversity buffer mismatches?
Find out here👇
dx.doi.org/10.1002/ecm....

01.12.2025 12:11 👍 45 🔁 16 💬 5 📌 2
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Signed Networks: theory, methods, and applications Signed networks provide a principled framework for representing systems in which interactions are not merely present or absent but qualitatively distinct: friendly or antagonistic, supportive or confl...

Our team just released a comprehensive and accessible review of Signed Networks — two years in the making! Theory, methods, applications, all in one place. Feedback welcome.
arxiv.org/abs/2511.17247

24.11.2025 10:08 👍 37 🔁 13 💬 1 📌 0

🚨 Job alert 🚨 Postdoc position in ecological forecasting 📈 as part of the Horizon Europe OSCARS call. The postdoc will be based in lovely Sevilla (fantastic place to live) and will include working closely with several European forecasting projects. Apply by Dec 11! 🌎🧪 globalchangeeco.com/jobs

24.11.2025 09:38 👍 20 🔁 34 💬 0 📌 0