GerardH wrote on Mar 14th, 2022 at 7:04am:Smallmouth bass are non-native invasives in the Yellowstone watershed, they were never found west of the Mississippi drainage until they were stocked farther west outside of their natural range.
That's what I was looking for, thanks.
The rest was informative also. I'd posit that invasive species have been a problem a lot longer than the 20th century. I recall historical examples of invasive causing serious problems well before that.
Pheasants are clearly invasive, and non-native. I wonder if if anyone has ever done a study on their impact; what they displaced...
I'd tend to call wild turkeys invasive - there were few turkeys and tons of grouse and woodcock when I was younger...but then, if I'm being objective and extending my perspective beyond my own lifetime...I have to wonder if it was really grouse and woodcock that were invasive based on the dramatic changes to the habitat from logging, etc.
We tend to celebrate increases in animals/habitat that we enjoy, and overlook the negatives...but "our" record of "management" of wild things is generally poor...and that's just in my lifetime. It was worse - much worse - before that, and I'm not terribly impressed with a lot of the efforts I see now.
I tend to remember Crichton's quote from
Jurassic Park, "Life will find a way."
I'm meandering...thanks for the info.