Exam 43: Global Ecology and Conservation Biology

Please use the following information to answer the question(s) below. Three forest areas are being considered for a conservation reserve. Each area contains the same number of trees and is the same cumulative size. The area surrounding the forest patches is a mix of agricultural land and residential homes. -Which area(s) would be most suitable for conserving amphibians, which are highly susceptible to a pathogenic (disease-causing) chytrid fungus?

Although extinction is a natural process, current extinctions are of concern to environmentalists because

Please use the following information to answer the question(s) below. Three forest areas are being considered for a conservation reserve. Each area contains the same number of trees and is the same cumulative size. The area surrounding the forest patches is a mix of agricultural land and residential homes. -Which area(s) would be able to support the most scarlet tanagers, a bird species that is restricted to forest interior habitat?

Which of the following strategies would most rapidly increase the genetic diversity of a population in an extinction vortex?

What causes extremely high levels of toxic chemicals in fish-eating birds?

How is habitat fragmentation related to biodiversity loss?

Which of the following best explains the reduction in human population growth rates over the past four decades?

How can human-caused environmental changes create problems for selecting a site for a preserve?

The main cause of the increase in the amount of CO₂ in Earth's atmosphere over the past 150 years is

Extinction is a natural phenomenon. It is estimated that 99% of all species that ever lived are now extinct. Why then do we say that we are now experiencing an extinction (loss of biodiversity) crisis?

How might the extinction of some Pacific Island bats called flying foxes threaten the survival of over 75% of the tree species in those islands?

The typical ecological footprint for a person in the United States is 8 global hectares (gha). How would you estimate the number of Earths required to support the entire population of the United States?

According to the small-population approach, what would be the best strategy for saving a population from extirpation?

Which of the following is the most sustainable source of energy?

As the climate changes because of global warming, species' ranges of plants in the Northern Hemisphere may move northward, using effective reproductive adaptations to disperse their seeds. The trees that are most likely to avoid extinction in such an environment are those that

The wood turtle (Glyptemys insculpta) is a small, long-lived turtle that is endangered through much of its range in North America. As their populations shrink in size, it becomes even more difficult for turtles to find mates, and small populations have steadily become smaller. What best describes what the wood turtles in small populations are experiencing?

Relatively small geographic areas with high concentrations of endemic species and a large number of endangered and threatened species are known as

Figure 43.3 Use the graph in Figure 43.3 and the information provided in the paragraph below to answer the following questions. Flycatcher birds that migrate from Africa to Europe feed their nestlings a diet that is almost exclusively moth caterpillars. The graph in Figure 43.3 shows the mean (peak) dates of bird arrival, bird hatching, and caterpillar season for the years 1980 and 2000. -Your friend is wary of environmentalists' claims that climate change could lead to major biological change on Earth. Which of the following statements should you use to support the biological predictions associated with climate change?

If global warming continues at its present rate, which biomes will likely take the place of the coniferous forest (taiga)?

Figure 43.3 Use the graph in Figure 43.3 and the information provided in the paragraph below to answer the following questions. Flycatcher birds that migrate from Africa to Europe feed their nestlings a diet that is almost exclusively moth caterpillars. The graph in Figure 43.3 shows the mean (peak) dates of bird arrival, bird hatching, and caterpillar season for the years 1980 and 2000. -The shift in the peak of caterpillar season is most likely due to