What distinguishes savannas from grassland ecosystems?

Savannas are tropical and subtropical grasslands with scattered trees or shrubs. They are often found between rainforests and deserts, across Africa, Australia, India, and South America. Grasslands, on the other hand, are large open areas of land covered mainly by grasses and herbs, with few or no trees. They can be found all around the world, in regions like the North American prairies, South America's Pampas, African plains, and Eurasian steppes.

Savannas experience a tropical or subtropical climate with distinct wet and dry seasons. They typically receive an annual rainfall of 20 to 50 inches (50 to 127 cm), with the wet season being warm and humid, and the dry season being cool and arid. Grasslands usually have a temperate climate with cold winters and hot summers. They receive an irregular rainfall of about 10 to 30 inches (25 to 75 cm) per year, which is inadequate to support the growth of a dense tree population.

The most distinguishing aspect of savannas is the presence of scattered trees with an open canopy, allowing sunlight to reach the grasses below. These trees are adapted to survive in the encompassing grassy environment. Grasses in savannas are usually taller and coarser than those found in grasslands. Grasslands, conversely, have a predominantly herbaceous vegetation cover, including grasses and flowering plants, with only occasional or no trees. The grass species in grasslands usually have a higher diversity compared to those in savannas.

Both savannas and grasslands support a wide range of animal species, but certain animals are more prevalent in each ecosystem. For example, herbivores such as elephants, giraffes, and zebras are commonly found in savannas, while bisons, antelopes, and prairie dogs are more typical of grasslands. Predators like lions and hyenas in savannas and coyotes and wolves in grasslands also adapt to their respective ecosystems. In conclusion, savannas and grassland ecosystems can be distinguished based on their climate, vegetation types, and animal species. Savannas have a tropical or subtropical climate with distinct wet and dry seasons, scattered trees, and tall, coarse grasses, while grasslands possess a temperate climate with irregular rainfall, limited or no tree population, and a higher diversity of grass species. Each ecosystem also supports different types of animal species, adapted to their respective environments.