Wildebeest Migration and Ecosystem Impact

The wildebeest migration across the Serengeti significantly impacts the ecosystem. Annually, 1.2 million wildebeests migrate, consuming vast amounts of grass. Their river crossings often result in drownings, contributing nutrients to the ecosystem. Carcasses provide essential nutrients like phosphorus, nitrogen, and carbon, supporting various scavengers and river life. Despite the drownings, they only affect a small percentage of the herd, with other factors like illegal harvesting and predation having a more significant impact.

What is one often overlooked aspect of the wildebeest migration?

• The impact on local tourism

• The increase in grass consumption

• The effect on river ecosystems

• The change in predator behavior

How far do wildebeests travel during their migration?

• 1800 kilometers

• 1000 kilometers

• 500 kilometers

• 2500 kilometers

What is a major reason for wildebeest drownings during river crossings?

• Sudden weather changes

• Steep riverbanks

• Predator attacks

• Lack of food

How many wildebeests typically drown each year during migration?

• 8000

• 10000

• 6500

• 5000

What is the primary role of vultures and storks in the ecosystem after wildebeest drownings?

• They prevent other animals from accessing the carcasses

• They scare away predators

• They help decompose the carcasses

• They spread diseases

What percentage of the local fish diet can come from wildebeest carcasses?

• 75%

• 10%

• 25%

• 50%

What happens to the bones of the wildebeests after the meat is gone?

• They are eaten by larger predators

• They dissolve in water

• They support microbial growth

• They are buried by scavengers

How long does it take for wildebeest bones to decay?

• 3 years

• 5 years

• 10 years

• 7 years

What is the percentage of the total wildebeest herd affected by drownings?

• 0.7%

• 0.5%

• 1.5%

• 1.0%

Which of the following causes more wildebeest deaths than drownings?

• Accidents

• Disease

• Old age

• Illegal harvesting