Earth has known far more extreme climate in the past than even the +4 degrees that we could reach because of human CO2 emissions. Some species may disappear from some parts of the globe, but for sure new ones would emerge thanks to increased temperatures in colder places.
However, never has a single specie had such a huge direct mechanical impact on the habitat of all the other species all around the world.
Do you have a response to this?
CO2 is fertilizing plant life on the earth. And satellite data confirms this: https://www.nasa.gov/feature/goddard/2016/carbon-dioxide-fer...
Since plant life is thriving, so too will overall animal life. Although extinction will continue to occur just as it always has throughout the history of the planet.
[0]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4036122/
https://science.gu.se/english/News/News_detail/increased-car...
https://www.nature.com/scitable/knowledge/library/effects-of...
If the yields and plant mass overall increase by more than 14%, then perhaps the trade-off is worth it. And this is perhaps why commercial greenhouse growers pump CO2 into them up to 1200PPM.
At any rate it does seem like an interesting question. What sort of species will thrive in a high CO2 environment? I do have faith in plants and their ability to adapt to such conditions, as it was the conditions they thrived under in the Mesozoic and beyond.
At any rate, thank you for the interesting studies.
https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2486...
https://academic.oup.com/treephys/article-abstract/14/7-8-9/...
https://en.wikipedia.org/wiki/Quaternary_glaciation#Next_gla...
> The state of various species is always in flux.
You asked for instances of climate change causing an extinction, this is your response to me fulfilling your request?
And don't forget in your other conversation about CO2 and plants about the increased temperatures predicted under climate change: "the diverse impacts of higher temperatures on other metabolic processes are likely to feed back on carbon metabolism in ways that we do not currently appreciate."