Jim, one study in one area is definitely not definitive on what the effect is of relatively rapid process (whatever you want to call). I don’t think we know that species can adapt to these circumstances and there is a lot of evidence that it has the potential to do damage to certain species and ecosystems.
And for a look at that evidence you can go here You can read some abstracts..
https://scholar.google.com/scholar?hl=en&q=ocean+acidification&btnG=&as_sdt=1%2C19&as_sdtp=