Island Biogeography

Island biogeography is the study of the ecological relationships and distribution of organisms on islands, and of these organisms’ community structures

• True

• False

Islands closer to the “mainland” support more species

• True

• False

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What are natural ways colonization can happen?

• Organisms can get blown in by storms

• Organisms can hitch rides on larger animals.

• Cruise Ships

• Fishing Ships

Islands have limited space & resources, creating unique conditions for evolution so there is

• More pressure for species to adapt to narrower niches (more specific food/hab.)

• More Adaptive radiation = single species rapidly evolving into several new species to use diff. resources & reduce competition

• More variety of different traits that quickly evolve to fit variety of different food sources on Island

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How does the limited space and resources on islands affect the evolution of species?

• It leads to the extinction of species

• It promotes the evolution of new species

• It does not affect the evolution of species

• It leads to the migration of species to other places

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What is the impact of frequent migration on island habitats?

• It leads to a decrease in species diversity

• It results in a larger population size and more genetic diversity

• It causes a reduction in the number of available niches

• It has no significant impact on the island habitat

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What is the impact of island size on species diversity?

• Smaller the island, greater the species diversity

• Larger the island, lesser the species diversity

• Island size does not affect species diversity

• Larger the island, greater the species diversity

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NGSS.MS-LS2-4

What is the effect of proximity to mainland on island species richness?

• Farther from mainland, higher the species richness

• Closer to mainland, lower the species richness

• Proximity to mainland does not affect species richness

• Closer to mainland, higher the species richness

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NGSS.MS-LS2-4

What are the challenges faced by organisms in colonizing new islands?

• Lack of food and resources

• Adapting to new environmental conditions

• Competition with existing species

• All of the above

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What is the impact of island size on the diversity of species?

• Larger islands tend to have less diversity due to limited resources

• Island size does not affect species diversity

• Smaller islands tend to have more diversity due to increased competition

• Larger islands tend to have more diversity due to more available niches and resources

Tags

NGSS.MS-LS2-1

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