Ecosystems can recover from abrupt shifts . However, where climate change is a dominant driver, ecosystem collapses increasingly cause permanent transitions , although the extents of such transitions depend on the emission scenario . Over the coming decades, MHWs are projected to very likely become more frequent under all emission scenarios , with intensities and rates too high for recovery of degraded foundational species, habitats or biodiversity  . Emission pathways that result in temperature overshoot above 1.5ºC will increase the risks of abrupt and irreversible shifts in coral reefs and other vulnerable ecosystems .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report