Multiple Choice
Which of the following communities would likely have the highest species diversity?
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51. Community Ecology
Geographic Impact on Communities
Multiple Choice
Which of the following statements correctly describes the graph below?
A
Point A represents a large island close to the mainland.
B
Point D represents a large island close to the mainland.
C
Point B represents an island with higher species diversity than point C.
D
Point D represents an island with higher extinction rate than point A.
Verified step by step guidance1
Examine the graph, which plots immigration and extinction rates against species richness. The blue curve represents immigration rates, which decrease as species richness increases. The red curve represents extinction rates, which increase as species richness increases.
Identify the points A, B, C, and D on the graph. Point A is located at low species richness, point B at medium species richness, point C slightly higher than point B, and point D at high species richness.
Consider the statement that Point A represents a large island close to the mainland. A large island close to the mainland would typically have high immigration rates and low extinction rates, which aligns with Point A's position on the graph.
Evaluate the statement that Point B represents an island with higher species diversity than point C. Since Point C is positioned further along the species richness axis than Point B, it suggests higher species diversity at Point C.
Analyze the statement that Point D represents an island with a higher extinction rate than Point A. Point D is at high species richness where the extinction rate is higher, as indicated by the red curve, compared to Point A at low species richness.
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