lec4 - MIT OpenCourseWare http/ocw.mit.edu 1.020 Ecology II...

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MIT OpenCourseWare http://ocw.mit.edu 1 .020 Ecology II: Engineering for Sustainability Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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Lecture 08_4 Outline: Population Modeling, Pesticide Impact Motivation/Objective Develop alternative models to examine impacts of pesticide on a pest (prey) population and on a predator that feeds on the pest population. Consider implications of different model assumptions. Approach 1. Define system, compartments, fluxes. Identify unknowns (predator biomass and prey biomass ). 1 M 2 M 2. Write mass balance equation for each compartment (rate form) 3. Develop alternative expressions (models) for gain and loss terms in each compartment’s mass balance eq. . Relate these expressions to unknown biomasses. 4. For each model, specify inputs, solve the set of coupled nonlinear mass balance eqs. for the unknowns (MATLAB). 5. Examine impacts of initial conditions and other inputs that change character of time response.
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lec4 - MIT OpenCourseWare http/ocw.mit.edu 1.020 Ecology II...

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