Their livelihood depends on a robust population of lake trout and salmon, the two most popular species among fishermen.

"I would strongly suspect that we are going to have a robust population of mosquitoes this spring," he said.

In this part of its range, only wetlands with minimal human impact have robust populations.

In these areas, they have more robust populations, since there are limitations on grazing competition from livestock.

South African fur seals have a very robust and healthy population.

The product contributes to the establishment of a robust microbial population.

More than its neighbors, France has traditionally regarded a robust and growing population as a reflection of national strength.

The lake is also renowned by fishermen in southwestern Pennsylvania for its robust population of channel catfish.

It would be many years before he could hope to have the robust population he had seen in Aradia's land.