Communties and Ecosystems

A field grazed by cows actually has more plant species than a field next to it that is fenced to prevent grazing. Why?

Succesion in ecosystems

Fire destroys a large swath of Yellowstone National Park, but it turned out to be beneficial in the long run. Explain why. What type of succession has occurred there?

Communities and ecosystems

Why are vegetarians more efficient at saving energy and food resources? Would our food problems be solved if everyone chose a vegetarian diet? Why or why not?

Ecosystems

What is the importance of introducing wolves or other large predators into ecosystems? Is this a good idea? Why or why not?

Bioremediation in ecosystems

What are the roles of bioremediation and augmentation of ecosystem processes in restoring degraded habitats?