Are my answers to the following correct? True, False, True, C and A,B,D 1. Speci

Question

Are my answers to the following correct?

True, False, True, C and A,B,D

1. Species accumuation are used to estimate local, or alpha, diversity.

2. The shape of a species accumulation curve depends, in part, on the order in which sampes are processed.

3. Species accumulation curves are not needed when a complete census is available.

4. Which of the following statements about beta deiversity is FALSE?

a. Beta diversity measures how quickly species composition changes across the landscape

b. There are a variety of different ways researchers have measured beta diversity

c. Relatively flat, homogeneous habitats tend to have higher beta diversity

d. Beta diversity changes depending on the scale at which you measure it

5. Paul Ehrlich and E.O. Wilson offered a number of reasons to protect biodiversity. What were they?

a. Earth cannot "survive" antoher mass extinction event

b. People have an aesthetic and moral obligation to protect Earth's species

c. Earth's biodiversity may provide us with important new resources in the future

d. Loss of biodiversity may reduce ecosystem services that would be difficult to replace

False, False, True, True, Sahara dessert, Secular migration and Sweetstakes route

6. Immigration rates decline as the size of an island increase.

7. Extinction rates decline as the number of species on an island increases.

8. Extinction rates increase as the size of an island decreases.

9. All else being equal, turnover rates are higher on small islands than on large ones.

10. When we think of islands, we often think of them as land masses surrounded by water. Ecologists have suggested a much broader definition of an island. Which of the following would NOT be viewed as an island by an ecologist?

a. Mountain top habitats

b. Urban parks

c. Caves

d. Sahara desert

11. Horses originated in North America and then migrates to Asia and Europe. As they migrates, they evolved over many generations into the horse species we see today. This is an example of which migration type?

a. Diffusion

b. Jump dispersal

c. Secular migration

12. Horses went extinct in North American and did not return until they were ferried in boats by European settlers (no land mammal can swim on its own across an ocean). From a horse's perspective, the ocean barrier is best described as...?

a. Corridor

b. Filter

c. Sweepstakes route

Explanation / Answer

1. True

Species accumulation curves are used to estimate local, or alpha, diversity

2. True

The shape of a species accumulation curve depends, in part, on the order in which sampes are processed.

3. True

Species accumulation curves are not needed when a complete census is available

4. (c)

Relatively flat, homogeneous habitats tend to have lower beta diversity .

5. (b),(c),(d)

People have an aesthetic and moral obligation to protect Earth's species . Earth's biodiversity may provide us with important new resources in the future . Loss of biodiversity may reduce ecosystem services that would be difficult to replace.

6. False

Immigration rates increase as the size of an island increase because more species would move to this area since size has increased.

7. False

Extinction rates increase as the number of species on an island increases due to increased competition

8. True

Extinction rates increase as the size of an island decreases because of less availability of space and food leads to increase in competition and survival of the fittest.

9. True

If all else being equal then turnover rates will be higher on small islands than on large ones

10.(d)

Sahara desert won't be viewed as an island by ecologists.

11.(c)

This is an example of Secular migration

12. (c)

Sweepstakes route is the ocean barrier best described according to a horse's perspective.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.