Changing Landscape




BIO326 : Community : Succession : Changing Landscape

Web Activity: Changing Landscape

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DUE: 7-Apr-2000. Work sent after this date will receive a grade of zero.

1. Satellite images provide an opportunity to evaluate ecological changes at the landscape level, e.g., in Mozambique.

a) How does NDVI use environmental adaptations of plants to infer quality of the vegetation?

b) How did the year 1992 differ from the average NDVI values of the satellite images? What was the environmental cause of the difference?

2. Although many migratory birds have suffered catastrophic declines in recent years, the snow goose population has increased so much that it is having an adverse effect on its environment in some areas, e.g., Knife River, Canada.

a) What increases and decreases does the NDVI index indicate have occurred in the time period between 1973 and 1996?

b) What impacts from the increase in snow goose population have been felt by other wild populations?

c) In what ways did human activities remove the negative feedback controls on the snow goose population?

d) Is it likely that the snow goose population will continue to expand or stabilize in the near future? Explain.

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E-mail Professor Gaud at William.Gaud@nau.edu
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