Re thermal limits see: https://www.nature.com/scitable/knowledge/library/physiological-optima-and-critical-limits-45749376/ & https://www.nature.com/articles/s41467-021-21263-8
Physiological limits to heat tolerance will remove some species immediately. Other species' survival normally depends on presence of other species for 'services'. Extinction of a keystone species leads to extinctions of many others where some aspect of life-cycle requires presence of keystone... and so on. See https://en.wikipedia.org/wiki/Systems_ecology, ...Ecosystem_services, ...Ecosystem_collapse, ...Extinction, ...Ecological_niche.



