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We are destroying species' habitats, leading to a mass extinction event. This habitat destruction also reduces the genetic diversity _within_ species. Our latest work develops quantitative models to predict how much genetic diversity has been and _will be_ lost. 🧬🧪🧵 www.pnas.org/doi/10.1073/...

pnas.orgLarge future genetic diversity losses are predicted from conservation indicators even with habitat protection | PNASGenetic diversity within species underpins evolutionary adaptation and has recently been included as a target for protection in the United Nations’...

Jeffrey Ross-Ibarra

@jrossibarra.bsky.social

31 Mar

Hi Jeff, interested in checking this out. Confused as to whether there is something different going on other than 1) π is driven by intermediate freq. alleles, so even big changes in N won't affect it in short term and 2) independent drift in isolated pops causes metapop Ne > sum of individual Nes.

Jeff Spence

@jeffspence.github.io

Yes! That’s basically the gist. There’s some effect of the geometry of the habitat, and the spatial structure of how habitat is lost, but what you said is the right intuition.

31/3/26, 5:58 am0 reposts2 likes

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