Q1.9. Species accumulation curves are used to estimate regional, or gamma, diver
ID: 82098 • Letter: Q
Question
Q1.9. Species accumulation curves are used to estimate regional, or gamma, diversity.
True
False
Q1.10. The precise shape of a species accumulation curve does not depend on the order in which samples are processed.
True
False
Q1.11. Species accumulation curves are needed even when a complete census is available.
True
False
Q1.12. The figure to the right presents the results of a study of local versus regional bird species richness, for birds and butterflies in a South African forest. Examine the top panel (birds) first, where the curve appears to reach an asymptote. What does this indicate about the processes structuring the bird community?
It suggests that the communities are unsaturated and that the size of the regional pool determines local species richness.
It suggests that the communities are becoming saturated and that local processes are likely becoming increasingly important.
It does not tell us anything about the relative importance of the regional species pool and local interactions.
Q1.13. Now examine the lower panel (butterflies), where the curve continues to rise linearly. What does this indicate about the processes structuring the butterfly community?
It suggests that the communities are unsaturated and that the size of the regional pool determines local species richness.
It suggests that the communities are becoming saturated and that local processes are likely becoming increasingly important.
It does not tell us anything about the relative importance of the regional species pool and local interactions.
Q1.14. Which of the following statements about beta diversity is FALSE?
Beta diversity measures how quickly species composition has changed through time.
All else being equal, specialists are likely to be more common where beta diversity is high.
Relatively flat, homogeneous habitats tend to have lower beta diversity.
Beta diversity changes depending on the scale at which you measure it.
Q1.15. Paul Ehrlich and E.O. Wilson offered a number of reasons to protect biodiversity. What were they?
Check all that apply:
Earth cannot "survive" another mass extinction event.
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.
Explanation / Answer
1.9. False. Species accumulation curves are used to estimate local, or alpha, diversity.
1.10. False. Indeed, the shape of the curve depends on the order in which samples are processed.
1.11. False. Often, it is not possible to count all the species of a region. IN such habitats, total species richness may be estimated.
questions 12 and 13 cannot be answeres since relevant graph/picture is missing
1.14 The False statement is Relatively flat, homogeneous habitats tend to have lower beta diversity
1.15
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.
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