Essay on Food Web Diagram

645 WordsMay 21, 20083 Pages
Food Web Diagram The African Grasslands are areas where the vegetation is dominated by grasses and other herbaceous (non-woody) plants. Grasslands cover nearly 50 percent of the land surface of the continent of Africa. While grasslands in general support diverse wildlife, given the lack of hiding places for predators, the African Savannah regions support a much greater diversity in wildlife than do temperate grasslands. The root systems of perennial grasses and forbs form complex mats that hold the soil in place. Mites, insect larvae and earthworms inhabit deep soil, which can reach 20 feet underground in undisturbed grasslands on the richest soils of the world. These invertebrates, along with symbiotic fungi, extend the root…show more content…
And the scavengers (vultures and hyenas) are animals which eat the remains of dead animals. A food chain, describe the feeding relationships between species to another within an ecosystem, shows how each living thing gets its food. For example, a simple food chain links the trees and shrubs, the giraffes (that eat trees & shrubs), and the lions (that eat the giraffes). Each link in this chain is food for the next link. A food chain always starts with plant life and ends with an animal. The general structure of an ecosystem is more or less like a pyramid. Each level influences the number of individual in the other levels. Masses of plants (producers) are at the bottom and support the whole structure. If the plants that support the food chain are destroyed, the whole system will collapse. If an animal further up the chain is destroyed, that may cause a population explosion below and disrupt the balance of the ecosystem (ZAP, n.d.). Intense, short-duration trampling and dunging by grazing animals is a natural part of how ecosystems function in arid and seasonally dry environments. Removing grazers damages these ecosystems, which depend on disturbance by grazing animals to perform vital functions such as mulching soil and planting seeds. The intense trampling that mimics the effects of wild herds has proven effective at healing environmental damage in grasslands and deserts (Keppel, 2005). Overgrazing has

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