102Chapter6 - Chapter 6 Population Biology 6.1 Dynamics Of...

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Chapter 6 Population Biology
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6.1 Dynamics Of Population Growth Isle Royale moose wolves carrying capacity population balance.
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Species and Population Organism Species: genetically similar organisms that reproduce Population: all members of a species in an area
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Dynamics Of Population Growth Exponential Growth - Growth at a constant rate of increase per unit time. (Geometric) Arithmetic Growth - Growth at a constant amount per unit time.
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Population Growth Growth rate = birth – death rates Doubling time Rule of 70 T dbl = 70/ann % incr. Table 6.1
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Feedback Positive: Change leads to more change More Offspring = More Future Parents Exponential Growth Positive = Mathematically, not Necessarily in terms of Desirability Negative: Change opposes More Change Rate of increase lessens More Output = Less Competition for Product = Less Profit = Less Output
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Nothing Can Grow Forever One cent @ 1% interest in 1 AD: Would now be $4.9 million One cent @ 2% interest in 1 AD: Would now be $1,972 trillion
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102Chapter6 - Chapter 6 Population Biology 6.1 Dynamics Of...

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