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Ecology-population dynamics I
Characteristics of population
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Population growth - from zero
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Given favourable conditions, bacteria double in number every 20-30 minutes.
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Huge Reproductive potential of living organisms
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Huge reproductive potential
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Reproductive potential
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Natural pop remains roughly stable over time despite huge reproductive potential
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Environmental resistance
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Carrying capacity and Environmental resistance
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Population equation
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J-shaped growth
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J-shaped growth
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J-shaped growth
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J-shaped – swarm of locust
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Survivorship curve e.g. Oyster
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Oyster_life cycle
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The very haphazard life of
planktonic larvae
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Oyster_adult stage-well secured
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Survivorship curves_different life strategies
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Equal chance of death at all ages
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Different life strategies
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Age structure_Sweden vs Costa
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Age structure-India
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