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Published byArabella Terry Modified over 9 years ago
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GROWTH MODELS
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What are the assumptions for an exponential growth model? Is this realistic?
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GROWTH MODELS
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LOGISTIC GROWTH PRACTICE
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GROWTH MODELS Logistic growth in the real world…
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GROWTH MODELS
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LIMITING FACTORS Density dependent When factors directly affect birth and death rates. Density independent When factors have little to do with population density.
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LIMITING FACTORS Density dependent prey/predator relationship
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DISPERSION Influences growth of populations Influenced by limiting factors (especially density-dependent)
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DISPERSION
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AGE STRUCTURES
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http://www.prb.org/Multimedia/Video/2013/population- structure-engage-short.aspx http://www.prb.org/Multimedia/Video/2013/population- structure-engage-short.aspx http://grist.org/population/2011-09-25-7-billion-in-7-minutes- science-magazine-explains-it-all-video/ http://grist.org/population/2011-09-25-7-billion-in-7-minutes- science-magazine-explains-it-all-video/
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