cem.levins: Community Effect Matrix For A Four-Variable Trophic Model

In LoopAnalyst: A Collection of Tools to Conduct Levins' Loop Analysis

Description

This dataset contains the computed community effect matrix of the model in Figure 2 from Levins' 1996 paper (see references).

Usage

data(cem.levins)

Format

A 4 by 4 (-1, 0, 1) matrix. The matrix is interpreted as the ith parameter has the indirect causal effect [i,j] on parameter j after the system stabilizes in response to a perturbation.

References

Levins, R. and Schultz, B. B. (1996) Effects of density dependence, feedback and environmental sensitivity on correlations among predators, prey and plant resources: Models and practical implications. Journal of Animal Ecology, 65(6),802-812.

Puccia, C. J. and Levins, R. (1986) Qualitative Modeling of Complex Systems: An Introduction to Loop Analysis and Time Averaging. Cambridge: Harvard University Press.

LoopAnalyst documentation built on May 2, 2019, 5:14 a.m.