No doubt that situation affected the timing of European arrivals ~ some before the peak and some after ~ and one devil of a time surviving here DURING the peak.
I didn't know the Sa'ami barcode had been found in Florida DNA ~
You would likely get some argument from OTHERS about that:
Roughly 26,000 years ago, the glaciers of the Northern Hemisphere had reached their maximum size before beginning to melt a point that scientists call the Last Glacial Maximum (LGM). At the LGM, the Earths ocean levels were at their lowest point and extensive reaches of dry land were exposed along the continents coasts.
I happened to run across something I wasn't aware of(not the first time) concerning exploration of North America's continental shelf. Dr. Adovasio(of Medowcraft fame) has been systematically SURVEYING AND SAMPLING OFF WESTERN FLORIDA since 2008. His mission -- primarily to find evidence of human occupation during the last ice age. There of course have been "accidental" discoveries on our continental shelf going back decades but he(amongst others maybe?) has apparently been able to acquire the necessary resources to do some serious exploration.
Not much but, the LATEST. BTW, don't do any "News" searches about his work. You'll find absolutely NOTHING.