Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 44.4, Problem 1TYK
Which is part of the original MacArthur-Wilson theory of island biogeography?
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- Island size influences immigration rates.
- Distance from source pool influences extinction rates.
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According to the theory of island biogeography;
Large islands have higher extinction rates than small islands
Islands further from each other have higher colonization rates
A large island close to the mainland will have high species diversity
Small islands will likely have more diversity than large islands
Examine the figure and position the labels correctly based on MacArthur and Wilson's equilibrium model of island biogeography.
Small, far
island
equillibrum
Small, near
island
equillibrum
Immigration
to near islands
Extinction on
small islands
Large, far
island
equillibrum
Large, near
island
equillbrum
Extinction on
Immigration
to far islands
large islands
Rate of immigration or extinction
Diagram and explain the colonization and extinction of island biogeography on an island that is near the mainland and far from the mainland as well as small vs. large. Explain what island biogeography is. Who came up with this model?
Chapter 44 Solutions
Principles of Biology
Ch. 44.1 - Prob. 1CCCh. 44.1 - Prob. 1TYKCh. 44.1 - Lake Baikal in Siberia is an ancient, unglaciated...Ch. 44.1 - Prob. 3TYKCh. 44.2 - Prob. 1TYKCh. 44.2 - Prob. 2TYKCh. 44.3 - Why might ecologists think of walking thecoastline...Ch. 44.3 - Prob. 2CCCh. 44.3 - Which of the following are examples of secondary...Ch. 44.3 - In New England salt marshes, Spartina grass...
Ch. 44.3 - Prob. 3TYKCh. 44.4 - Prob. 1CCCh. 44.4 - Prob. 1BCCh. 44.4 - Prob. 2CCCh. 44.4 - Which is part of the original MacArthur-Wilson...Ch. 44.4 - Prob. 2TYKCh. 44.5 - In these two food chains, plants and...Ch. 44.5 - Prob. 1CCCh. 44.5 - Prob. 1TYKCh. 44.5 - Detritivores that feed on the dung of herbivores...Ch. 44.5 - Prob. 3TYKCh. 44.6 - Net primary production is the energy that passes...Ch. 44.6 - Prob. 2TYKCh. 44.6 - Most gross primary production is used in (by)...Ch. 44 - Prob. 1TYCh. 44 - Prob. 2TYCh. 44 - Prob. 3TYCh. 44 - Prob. 4TYCh. 44 - On which types of islands would you expect species...Ch. 44 - Prob. 6TYCh. 44 - Autotrophic organisms are primary consumers....Ch. 44 - Prob. 8TYCh. 44 - Prob. 9TYCh. 44 - The most highly productive terrestrial ecosystems...Ch. 44 - Prob. 1CCQCh. 44 - Prob. 2CCQCh. 44 - Prob. 3CCQCh. 44 - List some possible ecological disturbances, their...Ch. 44 - Prob. 2CBQ
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- Which statement comparing island biogeography to mainland biogeography is true? A. The slope of species richness to area should be steeper for mainland species than for island species. B. Mainland sites should experience higher rates of immigration than island sites. Mainland sites should experience higher rates of extinction than island sites. C. D. On the mainland, extinction rate increases with area faster than immigration rate does, whereas the opposite is true for islands. E. Extinction rates would be the same for mainland and island sites.arrow_forwardgive two examples of an ecological specialist that went extinct. It may be useful to look for coextinction events, in which extinction of one species led to extinction of an ecological specialist that depended on that speciesarrow_forwardafects small mammai populations. [Deer exclosures are rencing that keep deer UUI of an area) Fill in the blank with the correct word: According to theory, excluding the herbivore deer from the forest the growth of plants in the exclosure. should increase O decreasearrow_forward
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- Two ecologists, Robert H. MacArthur and Edward Wilson, studied how organisms immigrate to islands and how their numbers change after colonization. They developed the island biogeography model to explain the composition and diversity of island species. The graph below shows the number of species versus the size of the Caribbean island: Number of Species 1,000 100 1 Redona 10 SPECIES BY AREA Saba Puerto Rico: Monserrat 100 1,000 Hispaniola Jamaica 10,000 Island Size in Square Kilometers Cuba 100,000 1,000,000 a. Use the Species by Area graph and your knowledge of how organisms can immigrate to answer the following: i. Identify the likely scientific question being investigated in the study. ii. Describe the relationship between species number and island size observed in the data. iii. Explain how the experiment results would change if the islands had frequent ships that docked on them from distant bodies of water. b. Scientists have found that most species on the same continent are more…arrow_forwardTwo islands in the Pacific Ocean are of equal size but differ in their distance from the mainland. Island C is 5 km from the mainland, while Island D is 50 km away. According to island biogeography theory, how would the extinction rates on these islands compare and why? Group of answer choices: A. Island D would have higher extinction rates because its greater distance from the mainland makes it harder for species to recolonize after local extinctions, reducing species turnover B. Both islands would have similar extinction rates because island size, not distance from the mainland, primarily determines extinction rates C. Island C would have lower extinction rates due to its smaller distance from the mainland, allowing easier recolonization and rescue effects D. Island C would have higher extinction rates due to its proximity to the mainland, which increases competition and predator pressure from mainland speciesarrow_forwardBased on indexes such as Shannon diversity, is a community of higherspecies richness always more diverse than a community of lower speciesrichness? Explainarrow_forward
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