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Harman Jaggi

@harmanjaggi.bsky.social
161 followers 160 following 50 posts

Ecologist interested in theoretical ecology and traditional farming landscapes. Currently, HMEI Postdoc at Princeton university. PhD '24 Stanford university. love geeking about food and music 🎶, sketch sporadically 🎨 harmanjaggi.com

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Reposted by Harman Jaggi
Chuliang Song @clsong.com · 10/09/2026
A wonderful review by Stefano on 100 years of Lotka–Volterra models. Don’t miss the incredibly detailed Supplement, truly the “War and Peace” of LV models. I really wish it had existed when I was a grad student! doi.org/10.1146/annu...
doi.org
One Hundred Years of Lotka–Volterra Models
Over the past century, the generalized Lotka–Volterra (GLV) model has grown from a mathematical curiosity to a cornerstone of theoretical ecology. Here we celebrate the enduring legacy of Lotka and Vo...
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Chuliang Song @clsong.com · 04/09/2026
Very grateful to the editorial board for the opportunity to write about a topic I care deeply about. This review is deliberately opinionated, a personal view of where theory in community ecology stands and where it might go next. Pushback and disagreement are very welcome! doi.org/10.1146/annu...
doi.org
Toward a Conceptual Commons for Theory in Community Ecology
Community ecology has developed a rich and increasingly diverse body of theory, but its rapid expansion has outpaced efforts to compare and synthesize competing frameworks. As a result, semantic ambig...
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International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 07/09/2026
📣We will soon be back for a new run of open online theoretical ecology seminars! We have six exciting speakers covering topics from all corners of the field to add to your calendars: In the meantime, there are 80+ previous talks on our YouTube 📺: www.youtube.com/@theoretical... See you there!
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Harman Jaggi @harmanjaggi.bsky.social · 04/09/2026
an old #sketch of some kind of hawk i think!
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Oxford Biology @biology.ox.ac.uk · 28/08/2026
In the most populated country in the world - and in a landscape changing with urbanisation - there is an ever-changing relationship between humans and dogs in India. @nishantkumar.bsky.social discusses his recent article in Nature Cities and this coexistence 👇
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India’s urban coexistence crisis with 60 million street-dogs
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Harman Jaggi @harmanjaggi.bsky.social · 22/08/2026
a great horned #owl sketch, referred to a picture by @birdnote.bsky.social! definitely took more time than I thought. P.S. finally watched the Wild Inside documentary and relived all my Flaco memories with @birdcpk.bsky.social. #GreatHornedowl
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Chuliang Song @clsong.com · 17/08/2026
www.science.org/doi/10.1126/... An amazing paper led by Jamie on the feedback between competition and evolution!
science.org
Eco-evolutionary feedback reshapes competitive dynamics in an orchard fly system
The feedback between competition and evolution is central to hypotheses about the origin and maintenance of species diversity. Yet, whether competition-induced evolution is sufficiently rapid, consist...
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Harman Jaggi @harmanjaggi.bsky.social · 14/08/2026
Join us this fall for a NITMB workshop on Multi-scale Biological Adaptation to Environmental Variability! Please share among colleagues and friends. www.nitmb.org/event/multi-...
nitmb.org
Multi-scale Biological Adaptation to Environmental Variability - National Institute for Theory and Mathematics in Biology (NITMB)
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Sebastian Schreiber @sebastianschreiber.bsky.social · 13/08/2026
Adding some color to liven up my research notes. Samples below include renditions of @ascalaphid.com's shrew monks and the hattifatteners from Moomin valley.
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Harman Jaggi @harmanjaggi.bsky.social · 09/08/2026
Happy to share new preprint led by Deepti on snow leopard-mediated apparent competition between wild ungulates and domestic livestock in the Trans-Himalaya! We find classic apparent competition mediated by the iconic snow leopards, making this result and time series especially valuable. (1/5)
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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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Sebastian Schreiber @sebastianschreiber.bsky.social · 22/07/2026
New preprint with @biologyjoe87.bsky.social and Jürg Spaak: a mathematically rigorous method for building community assembly graphs from Lotka-Volterra models, which map which species coexist and how single species introductions shift community composition. 1/14 www.biorxiv.org/content/10.6...
Community assembly graph (left) and numerically simulated dynamics along the highlighted orange path (right)
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Harman Jaggi @harmanjaggi.bsky.social · 06/08/2026
a quick great blue heron on my flight back from Salt lake city! planning on a great horned owl next! :D #ESA2026 #bird #sketch
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Caroline Farrior @cfarrior.bsky.social · 26/07/2026
Spread the word! My lab group is hosting a workshop tomorrow at #ESA2026: Ecological Theory for Everyone: A practical introduction to engaging with theory in your own research for those with little or no theoretical experience 1:30pm, Room 254B events.rdmobile.com/Sessions/Det...
A collage of theory figures: Trees searching for light, chaos from logistic growth, evolutionary analyses, stabilizing coexistence, and collective movement.
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Kaleda Denton @kaledadenton.bsky.social · 08/07/2026
My TEDxNewEngland talk is live and was selected for Editor's Pick - so honored! www.youtube.com/watch?v=X1_m...
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Harmit Singh Malik @harmitmalik.bsky.social · 04/07/2026
I must confess that before the World Cup, I did not even know where Cabo Verde was on the map, except that I knew it was off the coast of Africa. It may have lost to Argentina, but it won many hearts with its soccer and resilience.
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CJ Fogler @cjzero.bsky.social · 04/07/2026
Lawd, the replays of the Lopes Cabral goal 🤌🏼
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Casey terHorst @ecoevolab.bsky.social · 29/06/2026
Although Priyanga was fired, the story very much continues for her as she is struggling to make ends meet without a job or prospects. She recently sold her home to move into a small apartment in LA. She made some mistakes...but the punishment so far exceeds the "crime" (see: gender and race)
linkedin.com
UCLA's Most Decorated Ecologist Just Got Fired : Here's the sequence
In January of 2025, at the ICTP ICTS winter school at NCBS, Priyanga Amarasekare offered to take me and a few other students out for my birthday. She didn't have to do that.
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Harman Jaggi @harmanjaggi.bsky.social · 29/06/2026
Huge thanks to @sebastianschreiber.bsky.social for the excellent lectures & the most fun learning I have had in a long time! glimpses of his gorgeous illustrations attached! Thanks also to Alex and Zhongwei for the great lectures + organizing the stochastic dynamics summer school. Highly recommend!!
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Chuliang Song @clsong.com · 16/06/2026
Spent the last two years developing a new Intro to Physics course for undergrad biology majors. It features tons of examples from biology (especially Ecology & Evolution!) and requires only middle school-level math. Lecture note here shorturl.at/0PiVp Any comments or feedback are highly welcome!
drive.google.com
physics_for_biologists.pdf
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Harman Jaggi @harmanjaggi.bsky.social · 14/06/2026
An old sketch of Flaco from a picture via Manhattan Bird Alert @birdcpk.bsky.social. The most endearing part of 2023/early 2024! #sketch #owl #EurasianEagleOwl
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Sebastian Schreiber @sebastianschreiber.bsky.social · 12/06/2026
My @ucdavis.bsky.social colleague Laci Gerhart is doing extraordinary work: teaching natural history and participatory science in CA prisons, with a new $1.9M NSF grant to scale it statewide. The participants' curiosity and engagement shine through in this piece. biology.ucdavis.edu/news/trainin...
biology.ucdavis.edu
Training Naturalists Behind Prison Walls
A kestrel swoops to grab a smaller bird on the wing and eats it, right in front of a group of men in the garden at California Health Care Facility, or CHCF, a prison in Stockton, where the garden has ...
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Harman Jaggi @harmanjaggi.bsky.social · 10/06/2026
Our paper on transient dynamics and nonlinear fitness it out in Ecology! We present a matrix framework that links pulse (one-time) and press (sustained) perturbations, showing how transient nonlinearities and demography shape fitness. (1/3) esajournals.onlinelibrary.wiley.com/doi/10.1002/...
esajournals.onlinelibrary.wiley.com
Transient dynamics and nonlinear fitness: A matrix approach to pulse and press perturbation
Disturbances can occur as short-lived pulses (e.g., storms) or sustained presses (e.g., chronic drought). Much work in ecology has developed methods to help predict how natural populations respond to...
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Harman Jaggi @harmanjaggi.bsky.social · 08/06/2026
Late to this but congrats to all co-authors and awardees! Super grateful to have our paper receive the 2026 ESA Sustainability Science Award! We examine the ecological traits, genetic diversity and cultural/nutritional significance of traditional high-altitude crops in the western Himalaya. 1/5
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Ben Allen @evodynamics.bsky.social · 07/06/2026
And of course Evolution's Rainbow by Joan Roughgarden www.ucpress.edu/books/evolut...
ucpress.edu
Evolution's Rainbow by Joan Roughgarden - Paper
Scholarship is a powerful tool for changing how people think, plan, and govern. By giving voice to bright minds and bold ideas, we seek to foster understanding and drive progressive change.
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Chuliang Song @clsong.com · 01/06/2026
What have we actually learned from empirical applications of Modern Coexistence Theory? We reviewed 84 studies from the last two decades to find out. Read our new synthesis in Ecology Letters here: onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
What Have We Learned From Empirical Applications of Modern Coexistence Theory?
Reader environment loaded
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Nature @nature.com · 26/05/2026
Billie Goolsby’s experience with hearing loss helped her to develop a robotic tadpole for deciphering the secret lives of amphibians go.nature.com/4tTtlxb
go.nature.com
How I eavesdrop on frog conversations
Billie Goolsby’s experience with hearing loss helped her to develop a robotic tadpole for deciphering the secret lives of amphibians.
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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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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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Harman Jaggi @harmanjaggi.bsky.social · 18/05/2026
a quick blue tit sketch inspired by @cthonicyouth.bsky.social 's art! want to do this more often.
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International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 11/05/2026
📣Tomorrow (Tuesday)📣, our final speaker this term: Harman Jaggi (Princeton) will be presenting: ⭐Noise and determinism across systems: insights from Trinidadian guppies and Soay sheep⭐ Zoom link: iite.info/seminar/ Global times: www.timeanddate.com/worldclock/f... We hope to see you there!
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EcoEvoRxiv @ecoevorxiv.bsky.social · 22/03/2026
A robust method for quantifying the contribution of transient dynamics to variation in population growth rate. doi.org/10.32942/X2MT1V
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Harman Jaggi @harmanjaggi.bsky.social · 22/03/2026
Delighted to share new preprint co-led by @fishychrissy.bsky.social and I! Why do population growth rates vary through time? We develop a robust method to quantify the contribution of environmental fluctuations and transient dynamics to variation in growth rate. 1/6 ecoevorxiv.org/repository/v...
ecoevorxiv.org
A robust method for quantifying the contribution of transient dynamics to variation in population growth rate
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International Initiative for Theoretical Ecology @iite-ecotheory.bsky.social · 20/03/2026
🗓 Extended schedule for this term, now with Harman Jaggi @harmanjaggi.bsky.social joining our lineup of speakers! All details and Zoom link here: iite.info/seminar/ Also, don't forget we have 75+ previous talks archived on our YouTube 📺: www.youtube.com/@theoretical...
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Sebastian Schreiber @sebastianschreiber.bsky.social · 11/03/2026
Summer School on Stochastic Population Dynamics led by Alex Hening. A great opportunity for anyone interested in learning about stochastic methods and their applications to population dynamics. stochasticsummerschool.com www.mathprograms.org/db/programs/... Please repost.
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Harman Jaggi @harmanjaggi.bsky.social · 10/03/2026
Honored to serve as co-editor of Journal of Theoretical Biology special issue celebrating Prof. Madhav Gadgil’s profound contributions to theoretical ecology, population biology, following his sad passing. Shripad Tuljapurkar, Arni Rao & I are editing the issue. www.sciencedirect.com/special-issu...
sciencedirect.com
Journal of Theoretical Biology | ScienceDirect.com by Elsevier - Journal of Theoretical Biology | ScienceDirect.com by Elsevier
Read the latest articles of Journal of Theoretical Biology at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature
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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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Zach Gold @zachgold.bsky.social · 19/01/2026
Our new paper in @pnas.org (co-led by @theogibbs.bsky.social) demonstrates that spatial patterns can modify interactions in plant communities of more than two species! (1/8)
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Sebastian Schreiber @sebastianschreiber.bsky.social · 19/11/2025
Join us for an @smtpb.bsky.social workshop on Modern Coexistence Theory. We'll cover mathematical foundations, the theory of partitioning, and data-based applications. Featuring @swatipatel.bsky.social, Nick Kortessis, & Lauren Shoemaker. Zoom link here: smtpb.org/event-6426026
Poster announcing the workshop.
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Eve Beaury @evecologist.bsky.social · 18/09/2025
The Princeton Field Workshop is great opportunity for undergraduate students to learn ecological field skills and explore career paths! tinyurl.com/PFEW-2025
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Harman Jaggi @harmanjaggi.bsky.social · 05/09/2025
Had a great interaction with Sahana Ghosh from Nature India about our black pea research. Here's her excellent story on our paper: www.nature.com/articles/d44... @nature.com @ornithoale.bsky.social @stanforddoerr.bsky.social
nature.com
An ancient pea holds lessons for a warming Himalaya
Nurtured for millennia in the Trans-Himalaya, the hardy black pea outperforms cash crops in resilience and nutrition — and could reshape how science values farmers’ knowledge and forgotten foods.
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Harman Jaggi @harmanjaggi.bsky.social · 20/08/2025
Happy to share our research was featured in Stanford reports. @stanforddoerr.bsky.social @ornithoale.bsky.social news.stanford.edu/stories/2025...
news.stanford.edu
The ecological promise of the Himalayan black pea
Stanford researchers discovered a nearly forgotten variety of black peas from the northwest Himalayas that excels in climate resilience and nutrition.
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Jacob Levine @jacoblevine.bsky.social · 20/08/2025
Excited to see our work on 🔥 in industrial forests featured in the @sfchronicle.com this morning. Article by @kurtisalexander.bsky.social: www.sfchronicle.com/california-w...
sfchronicle.com
Does logging reduce wildfire danger? New California study finds key exception
Private timberlands in Northern California are more likely to see high-severity wildfire than areas in and around public forests, a new study found.
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Alejandra Echeverri, PhD @ornithoale.bsky.social · 19/08/2025
Check out our newest study published in Science Advances last Friday ❤️
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Harman Jaggi @harmanjaggi.bsky.social · 19/08/2025
Happy to share our research on traditional farming landscapes in northwest Himalaya is out in Science Advances! Thanks to my advisor Tulja & all the wonderful collaborators- Ale @ornithoale.bsky.social, Katie @kasolari.bsky.social, Akshata, Kullu, Rinchen, Lamaji. 1/7 www.science.org/doi/10.1126/...
science.org
Biocultural vulnerability of traditional crops in the Indian Trans-Himalaya
Traditional understudied crops in Indian Trans-Himalaya offer unique ecological, genetic, and nutritional potential.
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