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Grassland biomes are unaltered areas of land where grass is the dominant plant life. Grassland are found around the globe and have served as grazing areas.

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Presentation on theme: "Grassland biomes are unaltered areas of land where grass is the dominant plant life. Grassland are found around the globe and have served as grazing areas."— Presentation transcript:

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2 Grassland biomes are unaltered areas of land where grass is the dominant plant life. Grassland are found around the globe and have served as grazing areas for a large number of animals. Because of the incredibly fertile earth, grasslands have been exploited as farming grounds or plantations by humans for millennia. Of all biomes, grasslands have the most fertile soil!

3 What would a grassland become if it received less rainfall? Which biome receives a similar amount of rainfall to the grassland? What would a grassland become if it received more rainfall?

4 farther from the equator -- such as the U.S. prairies -- they have both hot summers and cold winters Savannas develop in regions closer to the equator, and so are generally warm all year long.

5 Grasslands are generally semi-arid areas with little or no trees, and are inhabited by grazing mammals, ground- nesting birds, insects, and a few species of reptiles. Where there are grazing mammals, there are always the predators who feed on them. There are generally two seasons in grassland biomes: The wet season and the dry season Grassland are found on every continent except Antarctica. Here’s how they’re classified:

6 Prairies are generally more humid than other grasslands, and are densely covered in tall, or short grass. There are very few trees on prairies, most of them usually found on hill slopes or more humid near springs and rivulets. The prairie soil is rich in nutrients. Grazing animals such as oxen and bison who fed on the prairie grass were also exploited by humans, with the bison being driven to near extinction by white hunters in the 19th Century. Bison were vital to the prairie biome, and without them, a cascade effect occurred. Keystone

7 Where do birds build their nests in the grasslands? This little burrowing owl nests in subterranean areas. It can dig its own burrow, but many times claims an abandoned burrow of a prairie dog, or gopher. While this is an owl, it is active both day and night. It will nest in pairs and colonies. They feed on insects, reptiles, and rodents.

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9 The steppe grassland is usually found in areas of the world which are less prone to moisture. Steppe vegetation is well suited to this drier climate, and the grass is generally shorter than that which is found on prairie grasslands. Animal life on the steppe is comprised of grazing mammals such as the antelope, and a wide variety of burrowing mammals such as ground squirrels and ferrets. All these little grazers, of course attract the attention of the Steppe predators, such as the Corsac Fox, and the Steppe Eagle.

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11 Savanna biomes are distinguished by their warmer drier climates, and their seasonal droughts. They have long taproots that can reach the deep water table, thick bark to resist annual fires, and adaptations that discourage animals from grazing on them. sharp bitter taste sharp bitter taste storage organs called bulbs and corms storage organs called bulbs and corms Savanna plant life is highly adapted to the hot and dry climate, with trunks that can store water for days, or special built-in mechanisms allowing the plant to lie dormant during periods of drought.

12 The Tropical Savanna is perhaps the most ecologically diverse of the grasslands. Several species of animals including birds, mammals, reptiles, and insects congregate and feed upon the few trees and grass or each other. One good example of the tropical savanna is found in Africa, where lions, elephants and warthogs make their home. This savanna is known as the Serengeti.

13 The Serengeti Plains of Tanzania Many savannas are transitional between grasslands and forests. They are often described as “woodlands” because trees and shrubs are scattered through these grasslands. The Sahel is another African savanna worth mentioning.

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15 Savannas also exist in the other places around the world. World famous gauchos, or cowboys raise thousands of cattle each year. They are known as Llanos in Venezuela, Pampas in Argentina, and Cerrado in Brazil

16 Brazil’s Cerrado is an open area of short twisted trees, grasslands, and savannas. The diversity of faunal life is very high. Brazil’s Cerrado is an open area of short twisted trees, grasslands, and savannas. The diversity of faunal life is very high. Because of this biodiversity, it is a global hot spot as there is an increased danger of extinction. Because of this biodiversity, it is a global hot spot as there is an increased danger of extinction. This area claims some of Brazil’s and indeed the World’s most rare and endangered species. This area claims some of Brazil’s and indeed the World’s most rare and endangered species. Maned Wolf Giant Anteater Pampas Deer

17 There is also a savanna in northern Australia. Eucalyptus trees and kangaroos are among the flora and fauna in this less biologically diverse area.

18 Up to 16 different species of browsers and grazers can coexist in one area. Up to 16 different species of browsers and grazers can coexist in one area. Different herbivores provide a wide range of food for carnivores, like lions, leopards, cheetahs, jackals and hyenas. Different herbivores provide a wide range of food for carnivores, like lions, leopards, cheetahs, jackals and hyenas.

19 Besides grasses and trees there are also flowering perennials. The flowers arrive when the season's rainy weather kicks in. Some examples of the flowers that grow in the grasslands are milkweeds, goldenrods, asters, the blazing star, sweet coneflower, and purple coneflower.

20 Again, humans have exploited many of the animals of the savanna biome, either for sport, fur, or illegal poaching. Rhinos and elephants have become endangered species due to the illegal trading of their horns and tusks. Frequent fires have also contributed to the diminishing savanna biome, and though most occur because of the dry heat, they are more frequent in areas populated by humans. Conservationists estimate that there are nearly 37,000 African elephants poached each year. Their ivory is traded in China, where it is legal.

21 In many parts of the savannas of Africa, people have started to exploit the grasslands to graze their cattle and goats.In many parts of the savannas of Africa, people have started to exploit the grasslands to graze their cattle and goats. These peoples are sedentary, as opposed to nomadic, so soon the grasses are completely eaten up.These peoples are sedentary, as opposed to nomadic, so soon the grasses are completely eaten up. With no vegetation, the savanna turns into a desert. Huge areas of the Sahel region are lost to the Sahara Desert every year because of overgrazing and farming in a process called desertification.With no vegetation, the savanna turns into a desert. Huge areas of the Sahel region are lost to the Sahara Desert every year because of overgrazing and farming in a process called desertification.


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