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Chapter 23 - Structure and Interactions of Populations

Interactions among populations and within populations were an aspect that Darwin treated lightly. Such dynamics are now, however, a major aspect of biology. In some cases, mathematical interpretations are very important. In other cases, recognition of population interactions affect how we view issues such as “biological control” in agriculture or ecology. These interactions help us to understand the major costs possible when pest organisms are introduced to new habitats. Particularly under artificial introduction by man, such new pests often come without constraining population effects.

Topics for Chapter 23:

  • Population Ecology

  • A Simulated Population

  • An Introduced Pest: Gypsy Moth

  • Biological Control: The Weed Ragwort

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