Q: Refer to figure 22.5, which MacArthur and Wilson (
Refer to figure 22.5, which MacArthur and Wilson (1963) used to show how isolation affects species richness on islands. Find a detailed map of the Pacific Ocean and locate New Guinea. Next...
See AnswerQ: We discussed how Diamond (1969) documented immigrations and extinctions on
We discussed how Diamond (1969) documented immigrations and extinctions on the California Channel Islands by comparing his censuses of the birds of the islands with the birds recorded over 50 years ea...
See AnswerQ: Diamond’s estimates (1969) of numbers of species immigrating and numbers
Diamond’s estimates (1969) of numbers of species immigrating and numbers that became extinct (six versus five) were virtually identical. Is this near equality in numbers of extinctio...
See AnswerQ: Suppose you are about to study the bird communities on the islands
Suppose you are about to study the bird communities on the islands shown above, which are identical in area but lie at different distances from the mainland. According to the equilibrium model of isla...
See AnswerQ: Now, suppose you are going to study the bird communities on
Now, suppose you are going to study the bird communities on the islands shown below, which lie equal distances from the mainland but differ in area. According to the equilibrium model of island biogeo...
See AnswerQ: Review the major hypotheses proposed to explain the higher species richness of
Review the major hypotheses proposed to explain the higher species richness of tropical regions compared to temperate and high-latitude regions. How are each of these hypotheses related to relative ra...
See AnswerQ: Explain how speciation and extinction rates might be affected by the area
Explain how speciation and extinction rates might be affected by the area of continents. What evidence is there to support your explanation? What does the influence of area on rates of extinction and...
See AnswerQ: Ricklefs (1987) pointed out that many large-scale contrasts
Ricklefs (1987) pointed out that many large-scale contrasts in species richness and composition cannot be explained by local processes such as competition and predation. Ricklefs proposed that differe...
See AnswerQ: Most examples of regional and latitudinal variation in species richness cited in
Most examples of regional and latitudinal variation in species richness cited in this chapter have been terrestrial. Consider regional variation in marine biotas. Like birds on land, fish are one of t...
See AnswerQ: How might a history of exposure to wide environmental fluctuation affect the
How might a history of exposure to wide environmental fluctuation affect the physiological tolerances of intertidal species compared to close relatives in sub tidal and oceanic environments? How might...
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