3AO3 module 2 cases - Case Study 1: San Juan, Puerto Rico...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Case Study 1: San Juan, Puerto Rico The strong disk snail, Marisa cornuarietis , is not susceptible to infection with human schistosomes, and thus can be used as a potential competitor to snails that do. A signiFcant reduction in population densities of from most experimental ponds occurred after only several years. In the two to three succeeding years, native snails could no longer be demonstrated. In another related experiment, competitor and nativ snail species coexisted in heavily eutrophicated ponds, whereas in sparsely vegetated ones, strong disk snails replaced the original population. Conditions that favored maintaining the competition were easy to maintain at low cost.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Case Study 2: Three Gorges Dam Project “In central China, the Three Gorges Dam, when completed, will permanently alter the fow oF the Yangtze River. The project will result in a dam 180 m high, and generating 18,000 megawatts oF electricity. One oF the side eFFects will be the displacement oF some 2 million people. The lake is expected to
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

3AO3 module 2 cases - Case Study 1: San Juan, Puerto Rico...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online