Download Notes Part 3 A habitat differs from a niche. A habitat is all aspects of

Notes Part 3
A habitat differs from a niche.
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A habitat is all aspects of
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An ecological niche includes
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Resource availability gives structure to a community.
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Species can share
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Competition occurs when two species use
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Competitive exclusion keeps two species from occupying the
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Competitive exclusion has
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One species is
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The niche will be
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The two species will further
Ecological equivalents are species
14.2 KEY CONCEPT
Organisms interact as individuals and as populations.
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Competition and predation are two important ways in which organisms interact.
o Competition occurs when two organisms
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Predation occurs
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There are three major types of symbiotic relationships.
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14.3 KEY CONCEPT
Each population has a density, a dispersion, and a reproductive strategy.
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Population density is the number of individuals that live in a defined area.
o Population density
o Scientists can
o Write the formula:
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There are three types of dispersion.
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Survivorship curves help to describe the reproductive strategy of a species.
o A survivorship curve is
14.4 KEY CONCEPT
Populations grow in predictable patterns.
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Changes in a
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The size of a population is always
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Four factors affect the size of a population.
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Population growth is based on available resources.
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Exponential growth is a
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Logistic growth is
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Carrying capacity is the
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A population crash is a
Ecological factors limit population growth.
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A limiting factor is
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Density-dependent
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Density-independent limiting
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14.5 KEY CONCEPT
Ecological succession is a process of change in the species that make up a community.
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Succession occurs following a disturbance in an ecosystem.
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Succession regenerates or creates
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There are
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primary succession —
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secondary succession —