Lake victoria storyboard

Lake victoria storyboard
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  • But the Nile perch weren't the only problem for the cichlids in Lake Victoria. There were many thin layers of blue-green algae scattered across the lake.
  • As the algae grew in Lake Victoria, the water became murkier. The cichlids who did survive couldn't see well enough to find mates, therefore they couldn't reproduce.
  • Despite these problems, some organisms thrived such as prawns, snails, and midges- which need little oxygen.
  • To add on, the rotting algae caused the water to pollute. It also caused the cichlids and many other fish to suffocate. By the early 1990's, about 60% of Lake Victoria's water lacked oxygen all year.
  • And there is yet again another enemy in the ecosystem of Lake Victoria. This plant, called a water hyacinth, floats down Kagera River into the lake. It is native to the Amazon Basin and was introduced to Africa in he 1800's.
  • The reason why the water hyacinth was bad is because the hyacinth makes breeding harder by blocking light and removing oxygen from the water.
  • And that is the story of Lake Victoria.
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