The phrase "a separate population" is correct and usable in written English.
It can be used when discussing distinct groups within a larger context, often in scientific, sociological, or demographic discussions.
Example: "In the study, researchers identified a separate population of birds that exhibited unique mating behaviors."
Alternatives: "an isolated group" or "a distinct community".
The experiments also revealed a separate population that responds selectively to speech.
Prior to orchestrating reinstatement, a separate population of hippocampal neurons distinguishes different scene cues (buildings vs. landscapes).
The idea was to establish a separate population in case an oil spill wiped out the original colonies.
We recall INTEGRAL results on the spectral lag analysis, showing how long-lag GRBs appear to form a separate population at low peak fluxes.
One population aligns roughly along the anticipated flow direction while a separate population is generated as a result of transverse stretching associated with diverging streamlines during mold filling.
Guest molecules shorter than the host segregate as a separate population causing growth rates to become both reduced and non-linear.
Weakened by forced labor, malnutrition, and diseases introduced by the foreigners, and dispersed by migration and intermarriage, they ceased to exist as a separate population group.
Critically, before orchestrating object reinstatement in EC, a separate population of hippocampal neurons distinguishes different scene cue types (buildings vs. landscapes) in both tasks (NAM and AM).
A coalition of commercial fishermen in Hawaii has asked NOAA to designate the Hawaiian humpbacks a separate population, which would make it easier to delist them.
Dr. Wayne showed that dogs were indeed derived from wolves, as long suspected, but he set their date of origin as a separate population at 135,000 years ago.
Others argue that the new anchovy stocks are a separate population that is only now rebounding in numbers thanks to greatly improved climatic conditions, and that French and Spanish boats should be allowed only restricted access to them.
