Exam 10: Sustaining Terrestrial Biodiversity: the Ecosystem Approach

People have, seemingly, always feared the wolf.In order to restore and sustain biodiversity in ecosystems in which the wolf is a keystone species, the gray wolf was re-introduced into such ecosystems.Given human concerns and fears about wolves, was it the correct decision?

Today the forests of the United States cover more area than they did in 1920.

One of the biggest problems for national parks in the U.S.is ____________________.

The value of ecological services provided by nature is seldom determined.Use the Figure above to answer the following question(s). -From a strictly value perspective, would it be more valuable for nature to be allowed to recycle nutrients or provide raw materials?

Which of the following is not a method of grassland restoration?

Which of the following is the most dangerous type of fire?

Wangari Maathai started the Green Belt Movement by encouraging which of the following?

The major causes of destruction and degradation of tropical forests includes all of the following except

Since 1977, 50,000 members of the Green Belt Movement have planted and protected more than ____________________ trees.

One of the trees that may be vulnerable to increasing global temperatures in New England is the ____________________.

Most developers and resource extractors oppose protecting the current 12% of land that is nominally being protected worldwide.

Which of the following is not a major problem for U.S.public parks?

Overgrazing is a significant cause of degradation of grassland in the United States.Why is overgrazing so devastating to grassland? Why would the people who control the grazing allow overgrazing to happen given what we know about overgrazing?

Which of the following is a "superpower of biodiversity" with an estimated 500,000 plant and animal species?

Burning tropical forests accounts for how much of the human-created greenhouse gas emissions?

The demand for fuelwood is a major factor in the degrading of forests.Which of the following is not true about the use of wood for cooking and heating?

Even moderate levels of grazing are unhealthy for grasslands.

Only about 1% of national parks in less-developed countries are protected.

Livestock graze in ____________________, which are managed grasslands or enclosed meadows, usually planted with domesticated grasses or other forage.

In 1995-1996 gray wolves were re-introduced to Yellowstone National Park. Since then all of the following have occurred, except