Bitesize has changed! We're updating subjects as fast as we can. Visit our new site to find Bitesize guides and clips - and tell us what you think!


Human uses of the savannah

The Masai and desertification

Masai women in the Amboseli National Park, Kenya

Masai women in the Amboseli National Park, Kenya

Many people in central Africa farm to produce the food they eat. The Masai tribe of the Kenyan Serengeti practise nomadic farming [nomadic farming: A type of livestock farming in which the farmers do not settle in one place but continually move with their herds to new pastures. ], a traditional method of farming allows vegetation to recover from animal grazing whenever the farmers move on to another area.

However, in the past 40 - 50 years the Masai's way of life and farming have been disrupted as a result of commercial pressures and government policies. The ecosystem has also started to suffer.

  • Commercial farmers, encouraged by government policies, have moved into the best dry-season land and converted it to commercial agriculture. As savannah is converted into cropland, the natural vegetation is removed and the soil's nutrients are rapidly used up.
  • When the Serengeti National Park was established in the 1950s to conserve wildlife and encourage tourism, human access to the park was restricted and the Masai were excluded from it.
  • The Serengeti's population has expanded rapidly over the past 30 years. This has resulted in larger herds grazing the grassland and more trees being cut down for fuel. As vegetation is removed there is a risk of soil erosion.

These interventions forced the nomadic Masai farmers onto marginal land. Their traditional pastoral migration patterns have been disrupted and they have been compelled to use smaller areas of land for their cattle. Overgrazing has been the inevitable result.

The Serengeti's increasing population has resulted in a growth in demand for meat, which has led to a rapid increase in meat poaching [poaching: Illegal hunting or fishing. ]. Poachers are now killing around 150,000 wildebeest a year - and a dramatic fall in the wildebeest population will cause a knock-on effect throughout the ecosystem.

Back to Ecosystems - the living world index

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.