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11 Cards in this Set
- Front
- Back
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What happens in exponential pop growth?
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The pop doubles its size w/in a given time frame
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What happens in exponential per capita growth?
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It reaches its maximum potential
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What kind of conditions much exist for exp. growth?
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Ideal
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What is exp. growth graphically expressed as?
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a J curve
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Logistic growth incorporates carrying capacity. What is carrying capacity?
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the max # of indiv. an area can support w/o declining
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Population density matters in which kind of growth?
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Logistic
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How is log. growth graphically expressed?
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as an S shaped curve
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What is K selection? Example.
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1. Density dependent; competition for resources
2. Larger organisms 3. Type 1 survivorship; sometimes type 2 4. Few young; long life spans EX: elephants |
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What is r selection? Example.
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1. Traits max repro, success
2. Smaller organisms 3. Type 3 survivorship 4. Lots of babies; short life spans EX: mice |
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Density dependent means...
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1. Population size matters
2. Competition for resources |
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Density independent means...
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1. Random events affect pop,
2. Natural disasters, human impact, disease |
