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Jitka Polechová

@polejit.bsky.social
2.4K followers 2K following 35 posts

evolutionary ecology, eco-evolutionary dynamics, eco-evo feedback, population genetics, evolutionary genetics, species' range & niche limits, speciation, evolution of genetic variance and genetic architecture 🧬 🧪 🌱 🐟 🦠 🦤 🌏 💻 @univie.ac.at

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Jitka Polechová @polejit.bsky.social · 08/05/2026
New #ecoevo paper @pnas.org: Evolution of species’ range and niche in changing environments. I show that feedback between evolutionary and population dynamics can create a tipping point where genetic variance erodes, and species’ ranges contract or fragment www.pnas.org/doi/10.1073/... #popgen 🧬🧪 🌎
Drawing shows a group of chimeric species at the center, from which three spirals of diversity loss lead to a single form: a bird, a fish, or a fox. Image credit: Tereza Nekovarova.
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Jitka Polechová @polejit.bsky.social · 25/11/2025
PhD-position vacancy in Jan Hrcek's lab lab.hrcek.net, Czech Academy of Sciences: Exploring how rapid evolution in communities allows maintenance of genetic variation and species diversity. @erc.europa.eu 🪰 🧬 🌏 🧪Application deadline: January 7th 2026
Ilustration of evolution in ecological communities, feuturing Drosophila
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Jitka Polechová @polejit.bsky.social · 22/01/2025
Preprint finally out! I show that eco-evo feedback can drive a tipping point where genetic drift overwhelms adaptation. This can result in a contraction of a species' range border or range fragmentation. Fragmentation is abrupt and arises readily under rapid temporal change. doi.org/10.1101/2025...
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Jitka Polechová @polejit.bsky.social · 16/11/2024
If you see this, please repost with a favourite photo of the sky that you’ve taken recently.
Evening sky over Alps
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Jitka Polechová @polejit.bsky.social · 08/11/2024
November in Austrian Alps: Schneealpe.
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