The phrase "human populations" is correct and usable in written English
For example, "The effects of global climate change are becoming increasingly evident in human populations around the world."
The pace of change accelerated as human populations rose.
They can be contained in human populations but the viral reservoir still exists in animals.
Biological diversity in human populations is much greater than government officials suggested.
Declining rural human populations led to increased forest cover and deer numbers.
"I study patterns and trends in cancer in human populations," he told me.
The rest of the world will be affected by those movements of human populations.
Disease-causing parasites have long affected human populations.
(A) The demographic history of three human populations.
Infection is widespread in livestock, and human populations are exposed.
The same, it seems, goes for human populations.
Also around 1200, human populations in Kodiak started growing.
