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Spruce Budworm Dynamics

  • Matthias Ruth
  • Bruce Hannon
Part of the Modeling Dynamic Systems book series (MDS)

Abstract

A classical example for the implications of catastrophes for ecosystem management is spruce budworm dynamics. Spruce budworm is a caterpillar that feeds on spruce and fir forests in the northeastern United States and eastern Canada. For many years, population sizes of spruce budworm are low and have little impact on trees. When forest stands reach maturity, however, spruce budworm populations explode, seriously affecting the forest by defoliating the trees. As a result of defoliation, trees are weakened and ultimately may die. With the death of trees comes a loss of the food source for spruce budworm and a consequent population crash.

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Notes

  1. 1.
    This model follows closely the model laid out in E. Beltrami, Mathematics for Dynamic Modeling, Boston: Academic Press, Inc., 1987, pp. 189–196.Google Scholar
  2. 2.
    E. Beltrami, Mathematics for Dynamic Modeling, Boston: Academic Press, 1987.Google Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Matthias Ruth
    • 1
  • Bruce Hannon
    • 2
  1. 1.Center for Energy and Environmental Studies and the Department of GeographyBoston UniversityBostonUSA
  2. 2.Department of GeographyUniversity of IllinoisUrbanaUSA

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