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Exam 10: Patterns in Species Richness

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Question 21

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In Figure 10.14b,which of the following statements is accurate?

A) Between pH 5 to 7, the number of invertebrate taxa is positively associated with mean stream pH .
B) Between pH 5 to 7, the number of invertebrate taxa is negatively associated with mean stream pH.
C) Number of invertebrate taxa is not associated with mean stream pH.
D) Species richness is greatest at the lowest mean stream pH.

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Question 22

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You have counted the number of amphibians and reptiles in the same experimental 1 km by 1 km area over the last five years.You also have a control plot of the same size nearby that is part of your sampling each year.Every year you have reviewed your data to understand which species were common or rare,and whether equal numbers of individuals were counted in those categories.What your data show is that in the experimental plot more species become rare to encounter and a large percentage of species that you do encounter tends to be more common from year one to year five.However,this is not the case in the control plot,which shows no change from year one to year five.You now plan to plot these data for a presentation.You now plan to plot these data for a presentation.What will a graph of rank-abundance for the control and non-control plots look like?

A) It will show species rank on the x axis and relative abundance on the y axis. The trend lines for each will be flat.
B) The graph will show a flat trend line for the control plot and a steep trend line for the non-control plot.
C) There are not enough data to determine what the graph will look like.
D) The graph will show a very steep line in the experimental plot by the end of year five and a much less steep line for the control plot for all five years.

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Question 23

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Where mean annual temperatures are highest in China you see this level of vertebrate species richness compared to the rest of the country _______.

Medium sized intertidal boulders are tumbled about by waves less than small boulders but more than large boulders.They also show the greatest diversity of intertidal invertebrates inhabiting them compared to small and large boulders.This illustrates the ____________________________ hypothesis.

You are fishing in a large lake.You are not after any particular species you just want to catch fish.You would choose a fishing lure that:

Using a simple model of species richness based on a one dimensional continuum,what is one hypothetical way that species richness could increase?

Which of the following explains what species richness is?

When there is high diversity within a community it is referred to as _______ diversity.

For the most part,meadows in Europe are not very species rich because artificial additions of nutrients have allowed some species to ____________.

As vegetation productivity goes up in China,vertebrate richness _______.

Which scientists are credited with the theory of island biogeography?

Under which scenario would the predicted number of resident species immigrating to an island be at the lowest according to the theory of island biogeography?

The number of species in a lake 300 m in diameter is greater than the number of species in a lake 150 m in diameter.Additionally,a lake that is 50 m in diameter has the least number of species of the three lakes.What term describes this relationship?

What is one way to define a harsh environment?

Which of the following is a measure of atmospheric energy?

You would expect to see the greatest species richness in reptiles at:

You are assigned the task of determining species richness in a given area.The lead researcher has told you that the number of samples you have to take is not limited.As you collect data,what pattern should you expect to see?

The fact that there are more species of beetles in Florida than there are in Canada supports the concept of ______________?

The intermediate disturbance hypothesis was originally proposed to account for patterns of species richness where?

You have counted the number of amphibians and reptiles in the same experimental 1 km by 1 km area over the last five years.You also have a control plot of the same size nearby that is part of your sampling each year.Every year you have reviewed your data to understand which species were common or rare,and whether equal numbers of individuals were counted in those categories.What your data show is that in the experimental plot more species become rare to encounter and a large percentage of species that you do encounter tends to be more common from year one to year five.However,this is not the case in the control plot,which shows no change from year one to year five.You now plan to plot these data for a presentation.What will your diversity indices look like?