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African Savanna Biome

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by

Perla Serrato

on 1 October 2012

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Transcript of African Savanna Biome

African Savanna Biome By Perla Serrato, Alex Tucker and Megan Shuptrine A savanna is a grassland ecosystem with isolated trees and shrubs. Temperature Savannas have warm temperatures all year long. During the dry season, which is winter, the temperature stays between 68 and 78 degrees F. During the wet season, which is summer, there is lots of rainfall and the temperature is between 78 and 86 degrees F. Longitude African savanna is located in the southern part of Africa. They are on either side of the equator. Savannas can be found between a tropical rainforest and a desert biome. Latitude 15 degrees north and 30 degrees south. 15 degrees west and 40 degrees west. Weather In the wet season (which is summer) they get fifteen to twenty-five inches of rain a month. In the dry season (which is winter) there is only an average of four inches of rain fall. Humidity During the months of December to March the temperatures are very hot and humid. However in the dry months like May to August have a low humidity. Soil Type and Compostion The soil of the African savanna is porous, with rapid drainage of water. It has a thin layer of humus (the organic portion of the soil created by partial decomposition of plant or animal matter), which provides vegetation with nutrients. How do Producers, Consumers, and Decomposers interact in the Savanna? Ecosystems are made up of many food chains that interact. These interacting food chains create food webs. In these food chains there are producers such as grass and other plants that are consumed by herbivores like a warthogs. Then scavengers like vultures or hyenas prey on the warthog. Thats when the decomposers/detritivores such as bacteria, fungi, termites break down organic matter making it available to producers and completing the food web. 4 Symbiotic relationships Predation: Lion chasing and eating a gazelle.
Parasitism: Tick on an elephant.
Commensalism: A Carry (bird) taking a ride on elephant.
Mutualism: A bird eating ticks from a rhino. What are we, as humans doing to the African Savanna? How is this effecting the biome. Negative Activities:
Using land for cattle grazing causing the grass to die and turning the savanna to a desert, causing fires which is destroying the land, cutting wood for fuel are causing problems for environment , and hunting animals illegally is causing animals to become extinct. Positive Activities:

Creating controlled burning programs to keep fires from developing, creating natural preserves to keep the savanna natural and protecting the environment by creating a biosphere reserves in South Africa. Some endanger animals in the savanna
are:
Black rhinos
African Elephant
Cheetahs
Cape mountain zebras Cheetahs are endangered because of their loss of habitat and poachers hunting them for their fur. By law these cheetahs are protected and the American Association of Zoological Parks and Aquariums are helping breed the species for preservation. African Elephants are endangered because of their loss of habitat due to human expansion. Though it is illegal, African elephants are hunted for their tusks,meat and skin.We are helping the elephants in the savanna by having wildlife preserves. Cape mountain zebras are endangered because of poachers hunting them. Management and monitoring plan has been developed to manage the zebra population in order to help save them from becoming extinct. Black Rhinos are one of the most endangered animal in the world. They are endangered because hunters kill them for their horns. I think we should help these endangered animals because we are one the reasons they are becoming extinct. If it weren't for us hunting them, they're would be more of these endanger species living. Predation Parasitism Mutualism Commensalism
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