key concept 54.1 Populations Show Dynamic Variation in Size over Space and Time
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Population dynamics are controlled by the physical environment, biological interactions, and dispersal
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Ecologists use a variety of approaches to estimate population size and extent
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key concept 54.2 Population Growth Describes the Change in Population Size over Time
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Births increase and deaths decrease population size over time
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All populations have the potential for exponential growth
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Logistic growth occurs as a population approaches its carrying capacity
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Factors limiting population growth can be density-dependent or density-independent
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Life tables keep track of demographic events
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key concept 54.3 Life History Is the Lifetime Pattern of Growth, Reproduction, and Survival
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Life history strategies can vary at species and population levels
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Life history strategies arise from constraints on growth, reproduction, and survival
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key concept 54.4 Population Biology Can Be Used in Conserving and Managing Populations
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Management plans must take life history strategies into account
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Management plans must be guided by the principles of population dynamics
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Knowledge of metapopulation dynamics helps us conserve species
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Apply What Youâve Learned
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