Biology 121 Lecture Chapter 54 "Population Ecology"

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The study of the Laceta vivipara lizard showed that _____.
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The low-elevation Netherlands population was intermediate for fecundity and survivorship when compared with other populations
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What is fecundity?
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The actual reproductive rate of an organism or population, measured by the number of gametes (eggs), seed set, or asexual propagules
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Which processes increase a population’s size?
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Births and immigration.
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What is density-independent growth also known as?
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Exponential growth.
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Hanski’s study of fritillaries showed that _____.
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Metapopulations are dynamic over time.
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An example of an age-structure influence on human population size is that _____.
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Populations dominated by juveniles should experience rapid growth.
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In species like sea turtles with high juvenile mortality, low adult mortality, and low fecundity, conservationists can most effectively help them by _____.
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Focusing on keeping adults alive.
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List four factors that define population growth.
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immigration births deaths emigration
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Why have population biologists become particularly interested in the dynamics of metapopulations?
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Because many populations are becoming restricted to small islands of habitat.
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If harvesting is not regulated carefully and exploitation is intense, what impact does harvesting have on a population’s age structure?
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Fewer older individuals will be left in the population; there will be relatively more young individuals.

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