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BIOL 4150 (57)

Lecture 24

6 Pages

Course Code
BIOL 4150
Andrew Mac Dougall

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Population Ecology Lecture NotesLecture 24Density DependenceDensity Dependence Is the tendency for the death rate in a population to increase andor the birth or growth rate to decrease as the density of the population increases Density dependence reduces survivorship and fecundityDensity Independent Is the tendency for the death birth or growth rate in a population neither to rise nor fall as the density of the population increasesWhat is Density Dependence and What is Density Dependence and IndependenceIndependence800800sshhtt600600aaeeddff400400oorree200200bbmmuu00NN0200400600800100002004006008001000Population densityPopulation densityWhat is Density Dependence and IndependenceWhat is Density Dependence and Independence808070706060hhtta50a50eed40d 40 ttnn3030eecc20r20ree10P10P000200400600800100002004006008001000Population densityPopulation density
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