Ecology - Unit 5: Extinction: Causes & Consequences

How can the niche, population and range requirements of a species affect its ability to survive?

• Generalists can survive in a wide range of environmental conditions and habitats, whereas the specialists can only survive in a very small amount of environmental conditions and habitats.

• Specialists can survive in a wide range of environmental conditions and habitats, whereas the generalists can only survive in a very small amount of environmental conditions and habitats.

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When the Tasmanian tiger went extinct in Australia, it definitely did not affect any other species.

• True

• False

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Choose all causes of modern-day extinction:

• human pollution of water

• over hunting

• fragmentation of habitat

• invasive species compete for resources

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Click all causes of the previous mass extinctions:

• temperature change

• changing sea levels

• shifting continents

• volcanic eruptions

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Why did Carolina parakeets become extinct?

• Hunters shot the birds in large flocks and settlers overtook their habitat.

• Lewis & Clark overharvested the species while on the Corps of Discovery mission.

• The rising sea level caused the species to become extinct.

• The species is extirpated from Missouri due to habitat loss.

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When an entire species disappears completely from Earth.

• extirpation

• endangered

• extinct

• mass extinction

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When a species disappears from one location but survives in another.

• endangered

• extinct

• mass extinction

• extirpation

A species that is at risk of going extinct

• extinct

• endangered

• extirpation

• mass extinction

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The dying off of a large number of species in a relatively short span of time.

• mass extinction

• endangered

• extinct

• extirpation

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Which of the following actions might resource managers do in an attempt to restore habitat for grassland birds?

• Plant non-native vegetation.

• Encourage farmers to leave weedy borders around crop fields.

• Plan a prescribed fire.

• Both b & c

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