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Arshed Nabeel

@arshed.bsky.social
169 followers 841 following 20 posts

Computer scientist wearing a physicist hat in an ecology department. PhD scholar at Indian Institute of Science. Part time cat-butler. arshednabeel.github.io

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Arshed Nabeel @arshed.bsky.social · 21/09/2026
In Czech, there was a plan to restore a wetland by constructing small dams, which was stuck in red tape since 2018. Eventually in 2025, a bunch of beavers decided that they are done waiting and constructed the dams themselves, saving the goverment about $1.2 million. en.wikipedia.org/wiki/Beaver-...
en.wikipedia.org
Beaver-engineered dam in the Czech Republic - Wikipedia
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Arshed Nabeel @arshed.bsky.social · 21/09/2026
Ever since I read about the beaver story in Czech Republic, I am a massive beaver fanboy. They are at it again. 🦫
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Arshed Nabeel @arshed.bsky.social · 07/08/2026
Speaking at this online seminar series tonight, about data driven models. Do join if this interests you!
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Fishers Fishes @fishersfishes.bsky.social · 03/08/2026
Talk Alert! The 2nd talk in the series "Ecological Dynamics" Featuring @arshed.bsky.social! Arshed will talk about data-driven modelling as a powerful approach for modelling real-world biological systems. 📆 7th August 2026 | ⏱️ 9:30 PM IST Joining Link: alueducation.zoom.us/j/2549018131
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Harman Jaggi @harmanjaggi.bsky.social · 20/05/2026
Excited to share our new preprint on noise and determinism in Trinidadian guppy population dynamics! Thanks to all collaborators: Ron, Joe, Arshed, Dave & Simon. We develop a framework for quantifying how stochasticity alters equilibrium structure, stability and vulnerability to perturbations. 1/5
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Arshed Nabeel @arshed.bsky.social · 20/05/2026
Our new preprint on the stochastic population dynamics of Trinidadian guppies is out! Proud to have been part of this collaboration, led by @harmanjaggi.bsky.social www.biorxiv.org/content/10.6...
biorxiv.org
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bioRxiv Ecology @biorxiv-ecology.bsky.social · 19/05/2026
Noise and determinism in Trinidadian guppy population dynamics www.biorxiv.org/content/10.64898/20…
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Arshed Nabeel @arshed.bsky.social · 06/03/2026
For more details, check out the blog post, and the paper here: go.aps.org/4aJrftm
go.aps.org
Flocking by stopping: A mechanism of emergent order in collective movement
In typical models of collective motion, each individual takes the average direction of multiple neighbors, resulting in the ordered movement of large flocks. Alternatively, interactions with only one ...
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Arshed Nabeel @arshed.bsky.social · 06/03/2026
We introduce a new 'halting interaction', where individuals stop on encountering others moving in the opposite direction. With this simple addition, we can attain globally ordered collective movement, with just pairwise interactions!
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Arshed Nabeel @arshed.bsky.social · 06/03/2026
We show, using a model, that a simple addition can circumvent this limitation, and attain globally ordered movement, with just pairwise interactions. The ingredient is 'stop-and-go' movement, a feature seen across taxa in animal locomotion, from locusts to sheep.
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Arshed Nabeel @arshed.bsky.social · 06/03/2026
Previous work has shown that, in small groups, interacting with just one neighbour is enough to achieve order. However, in large groups, these single-neighbour or pairwise interactions are insufficient, and the group devolves into disordered motion.
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Arshed Nabeel @arshed.bsky.social · 06/03/2026
In animal collective movement, there is evidence that individuals can interact only with a few neighbours at a time, due to perceptual and cognitive limitations. This begs the question: how many neighbours do you need to interact with, to achieve ordered collective movement?
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Arshed Nabeel @arshed.bsky.social · 06/03/2026
Here is a blog post on our recently published paper on collective movement with stopping: arshednabeel.github.io/blog/flockin... (Short thread follows)
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Arshed Nabeel @arshed.bsky.social · 04/03/2026
Work lead by Yogesh Kumar KC, and mentored by @vishuguttal.bsky.social and Srikanth Iyer.
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Arshed Nabeel @arshed.bsky.social · 04/03/2026
Our work on collective movement of individuals who can stop is now out in Physical Review E! We show that stopping can lead to ordered collective movement through a surprising new mechanism. go.aps.org/4aJrftm
go.aps.org
Flocking by stopping: A mechanism of emergent order in collective movement
In typical models of collective motion, each individual takes the average direction of multiple neighbors, resulting in the ordered movement of large flocks. Alternatively, interactions with only one ...
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Theo Sanderson @theo.io · 08/02/2026
I made a map of 3.4 million Bluesky users - see if you can find yourself! bluesky-map.theo.io I've seen some similar projects, but IMO this seems to better capture some of the fine-grained detail
bluesky-map.theo.io
Bluesky Map
Interactive map of 3.4 million Bluesky users, visualised by their follower pattern.
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Arshed Nabeel @arshed.bsky.social · 02/12/2025
Google's NotebookLM is one of the few times that AI has pleasantly surprised me. Especially with its new feature of creating slide-decks from sources you upload, it's an incredible tool for self-study.
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The Company of Biologists @biologists.bsky.social · 06/08/2025
This week, we are highlighting Rohini Balakrishnan, a @jexpbiol.bsky.social author, Editorial Advisory Board member and a part of the first cohort of JEB Travelling Fellowship recipients, as an extraordinary biologist. #100biologists
The Company of Biologists 100 logo to the left and QR code to the right.
 
Portrait of Rohini Balakrishnan to the left, text to the right
 
100 extraordinary biologists

Rohini Balakrishnan

Rohini Balakrishnan is a Journal of Experimental Biology author, Editorial Advisory Board member and a part of the first cohort of JEB Travelling Fellowship recipients. Rohini Balakrishnan is a Professor at the Indian Institute of Science, India, where she investigates animal communication and bioacoustics. 

#100biologists #biologists100
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American Naturalist / ASN 🐌 @asn-amnat.bsky.social · 01/08/2025
How Randomness Can Flip Evolution: New Study Uncovers Surprising Role of Population Noise Summary & Analysis by Tahirah Williams of “Eco-Evolutionary Dynamics for Finite Populations and the Noise-Induced Reversal of Selection” by Bhat et al. www.amnat.org/an/newpapers...
Diagram from “Eco-Evolutionary Dynamics for Finite Populations and the Noise-Induced Reversal of Selection” by Ananda Shikhara Bhat and Vishwesha Guttal (Jan 2025). © University of Chicago
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Ahmed El Hady @zamakany.bsky.social · 26/07/2025
Full House brainstorming about Projects at the Konstanz School of Collective Behavior . What an amazing group of Students . Each student works on a project to be presented at the end of the school @cbehav.bsky.social
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Arshed Nabeel @arshed.bsky.social · 26/04/2025
I recently learned that people may be using em-dashes (—) as one of the tell-tale signs for AI generated text. Now I have to consciously avoid using them in emails etc. I liked my em-dashes! 😞
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American Naturalist / ASN 🐌 @asn-amnat.bsky.social · 19/03/2025
Nabeel et al. present a method to derive models of theoretical ecology from stochastic time series data. This data-driven method may help empirical tests of ecological theories and to discover unknown principles. Read now ahead of print! www.journals.uchicago.edu/doi/10.1086/...
journals.uchicago.edu
Discovering Stochastic Dynamical Equations from Ecological Time Series Data | The American Naturalist
Abstract Theoretical studies have shown that stochasticity can affect the dynamics of ecosystems in counterintuitive ways. However, without knowing the equations governing the dynamics of populations ...
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Arshed Nabeel @arshed.bsky.social · 05/03/2025
Oh sorry for the confusion! The purgatory time consisted of many submissions across journals. All things considered, the review process at AmNat was quite pleasant!
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Arshed Nabeel @arshed.bsky.social · 28/02/2025
After languishing in the peer-review purgatory for over two years, our work on discovering dynamical models from time series data is finally out in @asn-amnat.bsky.social! www.journals.uchicago.edu/doi/10.1086/...
journals.uchicago.edu
Discovering Stochastic Dynamical Equations from Ecological Time Series Data | The American Naturalist
Abstract Theoretical studies have shown that stochasticity can affect the dynamics of ecosystems in counterintuitive ways. However, without knowing the equations governing the dynamics of populations ...
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Timothée Poisot @ctrlalttim.com · 10/02/2025
We finally got a ChatGPT generated review on a manuscript. So I wrote about how we handle these reviews is a sign of whether we have given up on peer review altogether.
buttondown.com
Vol. 24 - Here is a revised version of your review with improved clarity
ChatGPT is not my peer. It should not review my papers.
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Arshed Nabeel @arshed.bsky.social · 05/02/2025
Even the full paper is very readable (by CSTheory standards anyway). arxiv.org/abs/2301.10191
arxiv.org
Distinct Elements in Streams: An Algorithm for the (Text) Book
Given a data stream $\mathcal{A} = \langle a_1, a_2, \ldots, a_m \rangle$ of $m$ elements where each $a_i \in [n]$, the Distinct Elements problem is to estimate the number of distinct elements in $\ma...
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Arshed Nabeel @arshed.bsky.social · 05/02/2025
So elegant! Back in the day when I was a CS masters student, streaming algorithms were of my favorite things in our graduate algorithms course.
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Arshed Nabeel @arshed.bsky.social · 03/02/2025
I’m probably missing something, but intuitively it looks like A should imply B?
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Michael Plank @michaelplanknz.bsky.social · 15/01/2025
Do you work with individual-based models of birth, death and movement? We have a review paper for you, part of a special collection for the journal Interface’s 20th birthday! doi.org/10.1098/rsif...
Comparison of lattice-based random walks models with and without interactions between agents.
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Arshed Nabeel @arshed.bsky.social · 20/01/2025
This past week, I had a pleasure to attend and teach a tutorial session at the ICTS-ICTP Winter School on Quantitative Systems Biology. Fascinating school, opened my eyes to the amazing world of theoretical community ecology.
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