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Biology 301- Ecology and Evolution

by: Sequoia Brown

Biology 301- Ecology and Evolution Biology 301 002

Marketplace > University of South Carolina > Biology > Biology 301 002 > Biology 301 Ecology and Evolution
Sequoia Brown
GPA 3.614

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About this Document

These are the definitions from the population structure part II and population growth powerpoints.
Ecology and Evolution
Robert Friedman
Class Notes
Biology 301, ecology and evolution, biology definitions, usc, Biology help
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This 2 page Class Notes was uploaded by Sequoia Brown on Friday February 5, 2016. The Class Notes belongs to Biology 301 002 at University of South Carolina taught by Robert Friedman in Spring 2016. Since its upload, it has received 23 views. For similar materials see Ecology and Evolution in Biology at University of South Carolina.

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Date Created: 02/05/16
Biology 301- Ecology and Evolution Population Structure Part II Definitions & Population growth definitions - Frequency distribution o The measurements of a variable can be plotted by occurrence o Variables that are measurements of natural phenomena generally exhibit variation - Bell shaped distribution o Most of the measurements are clumped around a particular value  The area under the bell shaped distribution is measured in standard deviation - Demography o Is the study of populations *Population Size Changes - The four factors that change population size are typically measure as per capita rates - Thus the units are per individual per unit time - Populations increase due to births and immigration - Populations decrease due to deaths and emigration *Populations grow by multiplication - They grow in proportion to their size - Biotic potential o Is the maximum rate of increase a population is capable of under ideal conditions - Exponential growth o Appropriate when young individuals are added to the population continuously  Has a smooth curve of population increase as a function of time - Geometric growth o Appropriate when young individuals are added to the population at one particular time of the year or some other discrete interval o Results in seasonal patterns of population increase and decrease


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