4-17-08 notes

4-17-08 notes - 4/17/2008 POPULATION ECOLOGY NOTES PART II...

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4/17/2008 POPULATION ECOLOGY NOTES PART II Carrying capacity ( k ): maximum population size that a particular environment can support What will limit the size of the population is the individuals within their own environment competing for resources. Clearly populations are limited Population size is controlled through: o Density-independent factors-birth or death rates do not change with population density but are affected by other factors (e.g. weather). Floods, droughts, windstorms would affect an entire population equally o Density-dependent factors- birth and death rates change with population density (e.g. competition for resources—intraspecific competition). Density-dependent regulation o *Competition for resources like food (animals) or nutrients (plants) o Territoriality- competition for nesting sites o Disease- diseases spread more easily when population density is high o Predation- large populations more likely to be preyed on density dependent because the population is easy to see and catch if it is larger
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This note was uploaded on 04/26/2009 for the course EBIO 1220 taught by Professor Demig-addams during the Spring '07 term at Colorado.

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4-17-08 notes - 4/17/2008 POPULATION ECOLOGY NOTES PART II...

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