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Savanna Biome Project

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on 10 April 2014

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Transcript of Savanna Biome Project

Description of Savanna
Savanna is one of terrestrial biome situated between a grassland and a forest; affected by either dry or wet seasons.

The savanna biome is mostly made up of grass but there are a few trees.

Because of the availability of grass in the biome, there are many grazing animals who take advantage of this abundant food supply.

of Savanna

Savannas are always found in warm or hot climates where the annual is between 10 to 30 inches. There is no rain between December and February, yet its still a little bit cooler.
Description of Savanna
All of the animals and plants are extremely dependent upon each other for a food supply. If one species of animal were removed, the entire ecosystem would be altered.

The savanna remains warm all year long. During the wet season, the temperature is more pleasant with an average of 63° F.

Savana can be found in:
South America
Potential Threats
Characteristics of Savanna
& Abiotic Factors
South African Airways
(Head to Africa!)
South African Airways
Savanna Biome Project
By Andrew, James and KiBeom
Grade 12

Abiotic Factors
One very likely and imminent threat to the Savanna biome is climate change. Climate change is a threat which all biomes must face, although some will be affected more so than others.
Tree clearing is also another threat that is caused by humans.
For example until recently 480,000 hectares of savanna were cleared annually in Australia alone primarily to improve pasture production.

Human usage of the savanna biome is increasing, which can lead to degradation of vegetation and soil resources, resulting in nutrient losses and shifts in water balance and availability.

Savanna separate into two seasons
winter and summer
In the winter the temperature range of Savanna is 68° F to 78°F (200C to 250C)
in the summer, the temperature range is 78° to 86° F (25°C to 30° C)

The temperature in savanna is stable not change a lot
There is an annual precipitation of 10 to 30 inches (100 to 150 cm) of rain.
From December to February is rainy season

Most of animal migrate to other place during summer season.
Most of plants are dry and die
Lack of food to eat
Even sometimes small rivers are steam up or dry

In the summer there is lots of rain. In Africa the monsoon rains begin in May. An average of 15 to 25 inches of rain falls during this time. It gets hot and very humid during the rainy season. The hot, humid air rises off the ground and collides with cooler air above and turns into rain. In the afternoons on the summer the rains pour down for hours.
Fire play role in savanna
Removes oak leaves and litter, opening up the soil so that plants can grow faster. This also permits planted seeds to reach the soil.
• Helps perpetuate fire-dependent species.
• Help to remove harmful insects or diseases.
• Helps improve access to the savanna, making it easier to walk the property and survey the ecosystem.
• Kills invasive conifers such as red cedar.
• Recycles nutrients from the litter into
(Head to India!)
(Head to Australia!)
Soil is affected by four factors: Climate, Slope, Time, Organisms. Savanna has a long dry season, the soil become infertile, grass and plants die off. In the wet season, the soil become fertile due to grazing of herbivores. There are several types of soil in Savanna: Lithosol, Lateritic soils, Cracking clays, Red/yellow earths, Deep sands, Alluvial soils

(Head to South America!)
Air India
Air India


Threats to Savanna
Baobab - the trees reach heights of 5m to 30 metres and trunk diameters of 7 to 11 metres. It can provide shelter, clothing, food, and water for the animal and human inhabitants of the African savannah regions.
Acacia Senegal - It grows to a height of 5-12m. This plants can used on inflamed skin.
Gum tree eucalyptus - 10m to 60m. Koala bear eat them. providing food for many pollinators including insects, birds, bats and possums. Eucalyptus oil is highly flammable. Bushfires can travel easily through the oil-rich air of the tree crowns.
Scattered with shrubs and isolated trees; generally xerophytic (species adapted to survive with less water), or drought resistant.
In addition This biome lies in the transition belt between tropical rainforest and tropical steppes and deserts.
Herbivores such as: Zebra, Gazelle, Elephants Bufallo, giraffe, antelope, etc exists
Retrieved from http://www.savanna.org.au/all/
Keystone species
Elephant - Lots of scientist arguing elephants are keystone species in Savanna or not. They can change all the environment in Savanna but their waste can help other species to survive.
Caracal - predator, They have big ears to listen all the sound and usually they eat bird and sometimes wild pig

Emu - second biggest bird in the world. They cannot fly. They usually eat bugs and fruit.

Grant's Zebra - first consumer, they have strong logs to protect themselves from lions or other predators.

Lion - predator, they usually eat gazelles, buffalo, zebras and many other small to medium sized mammals. Endangered species in the world because over hunting.

Nigriceps ant - first consumer, the ants have adapted to living in trees because the soil gets waterlogged and spongy during the rainy season, and dries out and cracks during the dry season.
The trees have deep roots so that they can utilize water present in the soil during the dry season
Largest biome of Savanna can be found Africa
Thank you
D, Rajan. The main characteristic feature of the tropical
savanna biome are. Retrieved from www.preservearticles.com/2011112017603/the-main-characteristic-feature-of-the- tropical-savanna-biome-are.html
Webber, C. The Grassland Biome. Retrieved from
Savanna. Retrieved from
Full transcript