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12 Cards in this Set
- Front
- Back
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Number of organisms per unit area |
Population density |
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Pattern of spacing of a population within an area |
Dispersión |
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Any factor in the environment that does not depend on the number of members in a population |
Density independent factor |
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Any factor in the environmental that depends on the number of members in a population per unit |
Density dependent factor |
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How fast a given population grows |
Population growth rate |
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Ecologists use to describe the number of individuals moving out of a population |
Emigration |
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Ecologists use to describe the number of individuals moving into a population |
Immigration |
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Maximum number of individuals in a species that an environment can support for the long term |
Carrying capacity |
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Study of human population size, density, distribution, movement, and birth and death rates |
Demography |
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Change in a population from high birth rate and death rate to lice birth and death rates |
Demographic transition |
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Occurs when births plus immigration equals death plus emigration |
Zero population growth |
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Number of males and females in each of three age groups: pre-reproductive stage, reproductive stage,and post reproductive stage |
Age structure |
