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Introduction Savanna grasslands are best described as dry,
hot expanses of land. They are characterized by long grasses and with only a few trees which are scattered. The Pliocene and Miocene Epochs lasted for 25 million years. During this time, mountains rose in the Western North American region creating continental climate that was suitable for grasslands. http://www.premiumessays.net/
Prehistoric forests declined and they were
replaced by grasslands. After the Ice Ages of Pleistocene, there was an expansion of grasslands. Drier and hotter climates prevailed across the globe. Savannah grasslands have seasons that are very hot, dry and long which are followed by rainy short seasons each year. http://www.premiumessays.net/
Temperatures During summer, the average temperature is 270C
while in winter, it is 180C. Usually, the sky above savannah grasslands does not have any clouds. The temperature drops dramatically during the nights. The clouds aid in reflecting heat back to the earth as such, keeping it warm. Animals living in this environment have adapted to the dry conditions. They also make the most of the available water. http://www.premiumessays.net/
Coverage Savanna grasslands cover half of Africa’s
surface area. Are found in large sections of Australia, India and North America. This type of biome covers a large section of the earth’s surface area. They can also result from soil conditions, climate changes, agricultural practices and animal behavior. http://www.premiumessays.net/
Creation of Savannas Humans contribute in the creation of
savannas. This is by cutting down trees and burning them in order to plant crops. Large animals such as elephants can also turn any forest into a savanna. This is by knocking down trees, stripping bark from trees and also trampling on tree seedlings. http://www.premiumessays.net/
The most important aspect about savanna
grasslands is the climate. This is warm usually and with temperatures ranging from 680F to 860F. This biome exist in areas that have a six to eight month wet summer season and a four to six month dry winter season. Annual rainfall in the grasslands is ten to thirty inched per year. During dry seasons, lightening strikes the ground often igniting dry grasses covering the region. http://www.premiumessays.net/
Habitation Several plants are found in savanna
grasslands. They include red oats, Rhodes grass, lemon grass, star grass and other types of shrubs. Most of the savanna grass is coarse. It grows in patches that have interspersed regions of bare grounds. It is not easy to find many trees though there due to low rainfall. http://www.premiumessays.net/
Some small groves of trees mostly found near
ponds and streams. There are also different types of animals found in savanna grasslands. They do vary in accordance to the geographical position of the particular biome.
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