The widely scattered perennial streams still support unique populations of native fish.

Since then, this unique population, which is the only striped bass stock that migrates to salt water but spawns far inland, has been considerably reduced.

Visitors may not be able to tour The White House easily anymore, but they can still experience a cross section of Washington's unique population.

Students rotate at three different campuses, serving three unique populations of Karachi.

Like many communities in eastern Ontario, Richmond houses several unique populations.

Acadians often married the Mikmaq people, leading to an ethnic accord and the creation of a unique local population.

This last group, a unique, small, insular population, is genetically distinct from the other populations.

As a result, schools may not have the appropriate funds to adequately serve their unique population of students.

The Island breed is recognised internationally as a unique population of livestock.

As a rule, biologists prefer not to hybridize subspecies or smaller, unique populations.