Population Ecology

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Last updated 9:09 PM on 8/20/26
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18 Terms

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Ecology

The study of how living things interact with each other and their environment

<p>The study of how living things interact with each other and their environment</p>
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Species

A group of similar organisms that can breed and produce fertile offspring.

<p>A group of similar organisms that can breed and produce fertile offspring.</p>
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population

group of individuals of the same species that live in the same area

<p>group of individuals of the same species that live in the same area</p>
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Community

all of the species populations that live in the same area

<p>all of the species populations that live in the same area</p>
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Ecosystem

A community of organisms and their abiotic environment

<p>A community of organisms and their abiotic environment</p>
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biotic factor

Any living (or formerly living) part of an ecosystem

<p>Any living (or formerly living) part of an ecosystem</p>
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abiotic factor

Any nonliving part of an ecosystem

<p>Any nonliving part of an ecosystem</p>
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Habitat

specific environment where an organism lives

<p>specific environment where an organism lives</p>
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population size, density, & distribution

number of individuals, number within a per unit space, how individuals are spread out within a given space

<p>number of individuals, number within a per unit space, how individuals are spread out within a given space</p>
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age structure

number of males and females of each age in a population

<p>number of males and females of each age in a population</p>
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Sex Ratio

the ratio of males to females in a population

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survivorship curve

Graph showing the number of survivors in different age groups for a particular species.

<p>Graph showing the number of survivors in different age groups for a particular species.</p>
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immigration, emigration, births, deaths

4 factors that affect the size of a population

<p>4 factors that affect the size of a population</p>
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Migration

Seasonal (routine) movement of individuals

<p>Seasonal (routine) movement of individuals</p>
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exponential growth

Unhindered population growth due to the abundance of resources

<p>Unhindered population growth due to the abundance of resources</p>
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limiting factors

environmental factors that restrict population growth; density dependent and density independent

<p>environmental factors that restrict population growth; density dependent and density independent</p>
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carrying capacity

the largest population that an environment can support; logistic growth

<p>the largest population that an environment can support; logistic growth</p>
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biotic potential

The maximum rate at which a population could increase under ideal conditions

<p>The maximum rate at which a population could increase under ideal conditions</p>