how would this disease most likely impact the grassland ecosystem?

Explanation:

Characterized by their flat, open pastures and abundance of nutrient-rich soil, more than a quarter of the world’s land—and about 70 percent of its agricultural land—is covered by grasslands.

This biome is home to a range of flora and fauna, which add to its resilience against natural disasters such as droughts or wildfires. In fact, native grassland plants have adapted to extreme weather conditions to such an extent that savannas, a subset of grasslands found in Africa, Australia, South America, and India, require seasonal droughts and wildfires to maintain biodiversity

But this resiliency does not equate to immunity.

Grasslands are threatened by habitat loss, which can be caused by human actions, such as unsustainable agricultural practices, overgrazing, and crop clearing. Almost half of all temperate grasslands and 16 percent of tropical grasslands have been converted to agricultural or industrial uses and only one percent of the original tallgrass prairie exists today.