3:10 Lecture 22 .pdf - Bio 94 Organisms to Ecosystems...

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Bio 94 Winter 2017 © Dr. Nancy Aguilar-Roca Bio 94 “Organisms to Ecosystems” Lesson #22 March 10, 2017 Reading: Chapter 55: Community Ecology Pgs. Pgs. 1123-1133 (focus on competition and consumption), 1137-1145 You should be able to explain figures 55.2, 55.3, 55.4, 55.5, 55.6, 55.9, 55.16, 55.19, 55.12, 55.23, Table 55.1
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Bio 94 Winter 2017 © Dr. Nancy Aguilar-Roca Learning Goals By the end of this lesson, you should be able to Discuss the various interactions among species, such as competition and consumption. Explain why an assemblage of species in a biological community changes over time.
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Bio 94 Winter 2017 © Dr. Nancy Aguilar-Roca Exponential vs Logistic Growth Δ N Δ t = r max N Density-independent Density-dependent Fig. 54.4, 54.5 Δ N Δ t K - N K = r max N ( ) You don’t need to memorize the equations, but you should know how to use them
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Bio 94 Winter 2017 © Dr. Nancy Aguilar-Roca High vs Low Carrying Capacity For animals in the wild, what biotic factors may limit growth? Fig. 54.5b
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Bio 94 Winter 2017 © Dr. Nancy Aguilar-Roca Population density can affect birth and death rates Fig. 54.6
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Bio 94 Winter 2017 © Dr. Nancy Aguilar-Roca Why do populations cycle?
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  • Fall '14
  • Ecology, Dr. Nancy Aguilar-Roca

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