KEY CONCEPT Every organism has a habitat and a...
Transcript of KEY CONCEPT Every organism has a habitat and a...
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14.1 Habitat And Niche
KEY CONCEPT Every organism has a habitat and a niche.
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14.1 Habitat And Niche
A habitat differs from a niche.
• A habitat is all aspects of the area in which an organism lives. – biotic factors – abiotic factors
• An ecological niche includes all of the factors that a species needs to survive, stay healthy, and reproduce. – food – abiotic conditions – behavior
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14.1 Habitat And Niche
Resource availability gives structure to a community.
• Species can share habitats and resources. • Competition occurs when two species use resources in the
same way. • Competitive exclusion keeps two species from occupying
the same niche.
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14.1 Habitat And Niche
• Competitive exclusion has different outcomes. – One species is better suited to the niche and the other
will either be pushed out or become extinct. – The niche will be divided. – The two species will further diverge.
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14.1 Habitat And Niche
• Ecological equivalents are species that occupy similar niches but live in different geographical regions.
Madagascar
South America