Hybridisation between closely related species has increased in recent decades as one species shifts its range boundaries and positions itself more closely to the other. Hybrids between polar bears and brown bears have been documented in northern Canada . In North American rivers, hybridisation between invasive rainbow trout and native cutthroat trout has increased in frequency as the rainbow trout has expanded into warming waters . Whether climate-changed induced hybridisations can generate novel climate adaptations remains to be seen.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report