Lecture_15_Pop%20growth_28%20Feb20110[1]

Lecture_15_Pop%20growth_28%20Feb20110[1] - C hapte 11 r...

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Chapter 11 Chapter 11 Population Growth Population Growth
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Growth of populations with non -overlapping (discrete) generations can be described with the geometric model . Growth of populations with overlapping (continuous) generations can be modeled using the exponential model. Two types of population growth models describe a “J” shaped curve: geometric geometric exponential exponential
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Unrestricted population growth of organisms with non-overlapping generations is modeled using the Geometric growth model: N t = N o λ t
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Notice that the population has grown from less than a thousand to over a million in just 8 years !
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At this growth rate, in just 32 years there will be about 80 plants per square meter from southern Mexico to northern Canada AND Alaska!
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Write this equation down
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A certain moth species breeds in late summer and leaves only eggs to survive the winter. One local population was observed to increase from 5,000 to 6,000 from one season to the next. Predict the population size after 5 years,
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Lecture_15_Pop%20growth_28%20Feb20110[1] - C hapte 11 r...

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