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Biome Project

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C Durden

on 12 May 2010

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Transcript of Biome Project

TROPICAL SAVANNA BY: COBY D. Geographic Distribution The tropical savanna is located in northern and east central South America, central and southern Africa, the Indian Peninsula in Asia, and scattered throughout Australia. CLIMATE In the Tropical Savanna climate there is a dry season, which is in the winter. Savannas get all their rain in the summer months. During the dry season of a
Savanna, most of the plants shrivel up and die. Some rivers and streams dry up. Most of the animals migrate to find food.

In the wet season all of the plants are lush and the rivers flow freely. The animals migrate back to graze. In West Africa the rainy season begins in May.

It is usually cooler during the dry season by a few degrees. Because it is in the tropical latitudes that is still hot enough. The savanna climate has a temperature range of 68° to 86° F. In the winter, it is usually about 68° to 78° F. In the summer the temperature ranges from 78° to 86°. In a Savanna the temperature does not change a lot. When it does, its very gradual and not drastic.

There is an annual precipitation of 10 to 30 inches of rain. From December to February hardly any rain falls at all. ABIOTIC FACTORS The factors that can affect the Tropical Savanna and its organisms living in it are unseasonably warm temperatures, seasonal rainfall which can be too high or low which can cause floods or droughts, and fires that can be set by lightning can be harmful to the animals. Predation The African Wild Dog will chase and kill larger prey like wildebeest, medium sized gazelles and antelopes. The Lion preys on gazelles, buffalo, zebras and many other small to medium sized mammals. The Nile Crocodile preys buffaloes, antelope, and big cats. Adaptation During the rainy season, birds, insects, and both large and small mammals thrive in the Savanna, but the rainy season only lasts 6 to 8 months. During the dry season, surface water from the rain is quickly absorbed into the ground because the soil is extremely porous. Competition for water during the dry season is intense. Consequently, most birds and many of the large mammals migrate during the dry season in search of water. Example of Mutualism in the Tropical Savanna The Oxpeckers, and the Rhinoceros; the Oxpecker gets the ticks that are on the Rhino as its food, the Rhino gets the ticks taken off it. Example of Commensalism in the Tropical Savanna Many of the grazing animals will have birds follow them. There is no real benefit to the grazing animal, however the birds get well fed by eating all the bugs.

Example of Parasitism in the Tropical Savanna Ticks and fleas suck the blood off of the animals they live on, and the animals have nothing good that comes from this. ENDANGERED ANIMALS IN THE TROPICAL SAVANNA Lions- They have died out because wild dogs spread disease to the cats.

Black Rhinos- They are hunted for they're horns, which people think is a type of medicine, but it's not. However, people still harm Rhino's because their horns are expensive.

Zebras- There are only 2,000 of them left in the wild, mainly because humans drain their water from their land, so they have nothing to drink.

Wild Dogs- They are endangered because they have to compete with cheetahs and lions, therefor making it harder to survive. Also farmers kill them to protect their livestock..

Producers The producers of the Tropical Savanna are plants such as the Jarrah Tree, Kangaroo Paw, Swollen Thorn Acacia, Baobab, and Elephant Grass. The producers are the food for the primary consumers. Herbivores - Elephants and Giraffes
Detrivores - Dung Beetles
Carnivores - Buffalo, Lions, Leopards, and Cheetahs
Omnivores - Baboons Consumers Food Web Food Chain The Producers - the trees, shrubs and grass.
These producers make their food using the process of photosynthesis and are eaten by various herbivores in the Savanna lands. They gather up their energy from the sun to grow along with the yearly inundation.
The Primary Consumers - the zebra, elephants, antelope, and water buffalo.
These primary consumers consume the plants.
The Secondary Consumers - the cheetah, lions, snakes, manbearpigs, and lemurs.
These secondary consumers catch their prey the primary consumers and consume them.
The Scavengers - the termites, vultures, hyena, ants, and crickets.
These scavengers then come along and eat the leftover chunks of meat the primary consumers left and didn't eat.
The Decomposes or Detriments - mushrooms, insects and microorganisms.
These break down the remnants of what the scavengers left. breaking down the bones and releases energy back to the sun and provides nutrients to the soils and becomes a fertilizer. then new plant life is produced. Human Impact Desertification can result from poorly managed human intervention in the savannah. Desertification is the process by which areas of desert are created by the destruction of natural vegetation. This causes removal of vegetation cover, overgrazing, uncontrolled fuel wood collection, hard farming practice and loss of fertile soil and excessive tree felling. Many animals were hunted to near extinction such as the bison and buffaloes. Fortunately, the hunting of these animals had been banned. Work Cited
http://biology.about.com/od/landbiomes/a/aa041706a.htm

http://www.blueplanetbiomes.org/savanna.htm

http://www.radford.edu/swoodwar/CLASSES/GEOG235/biomes/savanna/savanna.html THE END!
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