Suppose a biologist has been conducting field studies of a community over many years. The biologist observes that H values have remained steady over most of that time, but more recently have declined precipitously. What is the significance of these observations?
A.
B.
C.
D.
Correct. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Incorrect. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Activity 56.2 Quiz
What happens if the populations in a community increase in numbers, but do not change in evenness or richness? Try making a prediction first and then test your prediction using the activity.
A.
B.
C.
D.
Correct. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Incorrect. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Activity 56.2 Quiz
The species populations of four different communities are summarized in the table below. Rank these communities in order from lowest to highest biodiversity according to the Shannon index. Try making a prediction first and then testing your prediction using the activity.
A.
B.
C.
D.
Correct. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Incorrect. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Activity 56.2 Quiz
Suppose two communities have the same total number of organisms. Can one of these communities have lower species evenness than the other community and yet have a higher Shannon index? If so, what has to be true? Use the activity to conduct your own study to support your answer.
A.
B.
C.
D.
Correct. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
Incorrect. See Key Concept 56.1 Communities Are Groups of Interacting Species Occurring Together in Space and Time
