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.

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