23 - BIO LECTURE NOTES (3/4/09) Population may grow...

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BIO LECTURE NOTES (3/4/09) Population may grow exponentially for short periods of time o Assume discrete generations o None of the reproducing adults survive to the next generation o N^ti is the number of the individuals in the populations at time t Q: if λ<1, then as t->∞ , then N^t = o A: 0 Demography o The number of individual present in a population depends on four processes: birth, death, immigration, and emigration Immigration occurs when individuals enter a population by moving from another population Emigration occurs when individuals leave a population to join another population Demography is the study of factors such as these that determine the size and age-structure of populations through time o To make predictions about the future of a population, biologists need to understand its makeup in detail o Biologists need to know how many individuals of each age are alive, how likely individuals are different ages are to survive to the following year, and
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This note was uploaded on 11/16/2009 for the course BIOL BIOL taught by Professor Johnson during the Spring '08 term at Aberystwyth University.

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23 - BIO LECTURE NOTES (3/4/09) Population may grow...

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