Ecosystems - ThinkQuest - includes links on food chains and nutrient cycles

Mission: Biomes (NASA)
World Biomes
World Biomes Map
Ecosystems & Biomes at Internet Geography
The World's Biomes - UCMP Berkeley Online Exhibit

Planet Earth Explorer (requires Flash)

Ecosystems & Biomes matching games
Amazon Interactive - An Ecotourism Game
Build a Prairie Interactive Game
In Search of the Ways of Knowing Trail - an interactive game thorugh an African forest

The Amazon

• The Amazon Paradox
  
• Delicate balance: Can the Amazon be exploited without being destroyed?

See also Forests 4

Tundra

Canadian tundra turning green

Mangroves

• Mangrove Ecosystems
• See Forests4