Dr Nadiah Kristensen

Dr Nadiah Kristensen

@nadiah.bsky.social

modeller of ecology, evolution, and cooperation | she/her | 🤘 | 🐘 fediscience.org/@nadiah | nadiah.org

2.4K followers1.1K following571 posts

My goal here though is not to speed up but to make richer. If anything it slows me down (more to check and learn), so I don’t think that counts as what people usually mean by a “productivity gain”.

I got an email celebrating a Faculty wellbeing initiative. Some lovely colleagues have been volunteering to do things like deliver flowers and citrus fruits to the tearooms to lift our spirits.

You'd think requiring everyone to agree to the fishing level would protect fish better, but this new paper shows consensus-based voting can lead to worse conservation outcomes when the fishery was already highly exploited. Congratulations to Irina Lerner on her first paper 🎉

conbio.onlinelibrary.wiley.comVoting Systems Influence Conservation Outcomes for International FisheriesFishery stocks that range partly or entirely beyond national jurisdictions pose substantial coordination challenges. Regional Fishery Management Organizations (RFMOs) were created to coordinate the s...

We need $484 billion/year for nature-based climate solutions by 2030. But how do you convince investors when a single cyclone can erase years of restoration? Jordan Holdorf's new paper shows adaptive timing of investments can make risky projects financially viable.

onlinelibrary.wiley.comAdaptive temporal optimization of restoration investments with blue carbon returns and climate risksThis framework provides a tool for conservation scientists to develop adaptive investment plans for restoration projects under climate risk. Using project-specific data, it shows how carbon markets c...
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Thread summarising an arxiv preprint investigating what Grokipedia changed from Wikipedia by @harold.bsky.social and @mantzarlis.com bsky.app/profile/haro...

hal@harold.bsky.social

back again to share a new preprint from me and @mantzarlis.com! “What did Elon Change? A comprehensive analysis of Grokipedia” arxiv.org/abs/2511.09685 I had seen many spot analyses of individual grokipedia pages, but I was curious: how was grokipedia made? what did Elon change from wikipedia?

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A blessing for the system, not me. I really regret not going with my gut and saying “no” to submitting that paper to Scientific Reports. The Ecol. Model. ones can’t be helped because that was a respectable journal at the time, but Sci Rep has always felt dodgy. That’s a lesson learned for me.

Though funnily enough, we got a really thorough review at Sci Rep. The reviewer was so careful they picked up a right author but wrong paper mis-citation. I think they even found typos in the supplement, from memory (20 pages of mostly maths). But we could have got somewhere else.

Recently read a superstar outside my field, summarising their previous work modelling institutional change. A quite simple model, but it can capture, e.g., "strategic stability", where groups vote against a change that will benefit them bc it will open the door to future change that harms them.

sciencedirect.comInstitutional change and institutional persistenceIn this essay, we provide a simple conceptual framework to elucidate the forces that lead to institutional persistence and change. Our framework is ba…
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Recently read a superstar outside my field, summarising their previous work modelling institutional change. A quite simple model, but it can capture, e.g., "strategic stability", where groups vote against a change that will benefit them bc it will open the door to future change that harms them.

sciencedirect.comInstitutional change and institutional persistenceIn this essay, we provide a simple conceptual framework to elucidate the forces that lead to institutional persistence and change. Our framework is ba…
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I understand they need to suppress the individual-level model for clarity and tractability, so they need to assume some mechanism like niche-construction/intergenerational kin selection that makes individuals care for group interests in the future.

Recently read a superstar outside my field, summarising their previous work modelling institutional change. A quite simple model, but it can capture, e.g., "strategic stability", where groups vote against a change that will benefit them bc it will open the door to future change that harms them.

sciencedirect.comInstitutional change and institutional persistenceIn this essay, we provide a simple conceptual framework to elucidate the forces that lead to institutional persistence and change. Our framework is ba…

This was the overview, so I might have the details of the model wrong, but it seems to have two layers: (1) given the institution, the policy is determined by the median voter, and (2) voting on institutions themselves, which determine shares and which groups are enfranchised.

The institution-voting is modelled as a dynamic game (Markov Voting Equilibria approach). There is a discounting factor which allows groups to take into account the effect of future institutions on their payoffs. It's exciting it captures so much about their historical case studies.

Congratulations to my office-mate, Zach Carter, for making the cover of Nature Ecology & Evolution 🎉

Nature Ecology & Evolution@natecoevo.nature.com

Our October issue is now live: www.nature.com/natecolevol/... Featuring research on: 🧪 💧Wetland carbon sequestration 🌊Starfish diversity in the deep sea 🧬Genetic architecture of reproductive success Cover shows a colony of king penguins, from Carter et al. www.nature.com/articles/s41...