Final answer:
Temperate grasslands host a mix of migratory and permanent animal populations, adapted to seasonal changes and supported by the ecosystem's dense vegetation and fertile soils.
Step-by-step explanation:
The population of animals in temperate grasslands, which are found in regions like central North America (prairies) and Eurasia (steppes), includes both migratory and permanent species.
Migratory animals, such as certain birds, often travel thousands of miles to find food, mates, or other resources, adapting to the seasonal changes in these ecosystems.
In contrast, permanent residents like some species of grazing animals and rodents do not migrate and have adapted to the conditions present throughout the year.
Migratory patterns can vary within a species, as seen in instances of obligate, facultative, and incomplete migration. The dense vegetation and fertile soils of temperate grasslands, supported by the extensive root and rhizome systems of grasses, provide a stable environment for these populations.