The unique light environment of the Earth’s polar regions creates conditions that result in circumpolar hybrid zones. These extreme conditions force species into a smaller reproductive window, creating opportunities for hybridization. This will sustain biodiversity in the long term.
https://www.utu.fi/en/news/press-release/extreme-polar-light-environment-of-the-north-and-south-poles-sustains
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The original research article is available at: [https://doi.org/10.1002/j.oneear.2024.08.002](https://doi.org/10.1016/j.oneear.2024.08.002)