Final answer:
Savannas support higher densities of large mammals such as gazelles, wildebeests, and elephants compared to forests, owing to the abundance of grass and the dynamic role of fire in these ecosystems.
Step-by-step explanation:
When comparing the densities of large mammals in different landscapes, savannas generally support higher densities than forests. Savannas are immense biomes covered in grasses that provide abundant food sources for grazers. A variety of wildlife, including large mammals like gazelles, wildebeests, and elephants, thrives in these regions. Fire dynamics also play a crucial role in these ecosystems; for example, intense grazing can reduce flammability and support diverse large mammal assemblies. In contrast, forests have dense canopies that limit the growth of grass and other vegetation on the forest floor, which can support fewer large grazing mammals. Forests, on the other hand, have a denser vegetation cover, which can make it more difficult for large mammals to move around and find food.