Grassland Biome

By Jeff Bohlmann

What makes it a Grassland?

A grassland is a geographical area where the average annual precipitation is enough that it can support grasses, and even trees in some areas. There are two different types of grasslands. Tall-grass grasslands contain taller grasses and are very humid. Short-grass grasslands have shorter grass and have more extreme weather than tall-grass; hotter in the summer and colder in the winter.

Where Are Grasslands Located?

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Grassland biomes are usually found near the middle latitudes. It is also very common for grasslands to be on the interior of continents. As the picture above shows, grasslands are on six of the seven continents.

Abiotic Factors

Grasslands have lots of loose topsoil due to lack of rainfall. In temperate grasslands, the average annual precipitation is about 50.8 to 88.9 cm. Summer temperatures can be as high as 100 degrees fareinheit, while winter temperatures can be as low as -40 degrees fareinheit.


Plant Life

Most of the plants in a grassland are grasses. Some of the different types of grasses found in grasslands are blue grama, buffalo grass, big blue stem, and little blue stem. Tall grasses will grow only in areas where there is about 30 inches of rainfall per year.

The purple cone flower is a flower that blooms in mid-summer and fall. Plants are the producers of grassland ecosystems and are necessary to maintain the carefully balanced food web.

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This picture shows the transfer of energy in a grassland biome. The animals of this food web usually live in a tall-grass biome, but some can live in short-grass biomes.

Ecological Concerns

Some threats to the biome are fires. However, since grass grows from the ground up, a grassland can quickly regrow because the roots will not be destroyed in a fire. One endangered species is the asian elephant due to people hunting and killing them. The west african giraffe is also endangered.