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19 Cards in this Set
- Front
- Back
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Habitat
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The place where an organism lives
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Population
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All organisms of the same species in a given area
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Community
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All populations in a given area
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Ecosystem
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A community and the non-living components of its habitat
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Biosphere
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The zones of the Earth’s soil, water, and air in which living organisms are found
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Uniform population distribution type
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evenly spaced, e.g. golden eagles
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Random population distribution type
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with no apparent pattern, e.g. moose
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Clumped population distribution type
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grouped in a specific area, e.g. cedar trees
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Biotic Potential
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the maximum population growth that can occur under ideal circumstances and is dependent on the intrinsic rate of increase.
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exponential growth
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producing a very large number of individuals.
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Lag phase
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Part of an exponential growth curve in which the number of individuals is low. |
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Exponential growth phase
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Part of an exponential growth curve in which the number of individuals are increasing.
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Environmental Resistance
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all environmental conditions that prevent populations from achieving their biotic potential, and continuing in an unlimited exponential growth phase.
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Survivorship Curve Type I
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mortality delayed with a majority surviving to old age (humans)
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Survivorship Curve Type II
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mortality rate relatively constant through time (song birds)
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Survivorship Curve Type III
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mortality immediate with majority dying at young age (maple trees)
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Age Structure Diagrams
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graphical representation that describes the distribution of ages in a population.
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Stabilized (MDC)
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sides are relatively parallel, as in more developed countries
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Unstabilized (LDC)
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broader at the base, as in less developed countries
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