On Measuring the Intrinsic Rate of Increase of Populations with Heterogeneous Life Histories
- 1 February 1979
- journal article
- research article
- Published by University of Chicago Press in The American Naturalist
- Vol. 113 (2) , 277-293
- https://doi.org/10.1086/283385
Abstract
A method is developed for determining the exact value of the intrinsic increase rate of populations with heterogeneous life histories. The method works whenever the life history can be represented by a finite set of reproductive paths taken by individuals of the population. The finite rate of increase is the largest real root of a generalized Lotka equation. This generalized equation is easily obtained by summing the overlapping reproductive contributions of each life history path to population growth. These contributions are readily identified and quantified from a simple graphical representation of the life history. In the case of patchy environments, the dominant root of the generalized Lotka equation may be complex, giving rise to oscillatory intrinsic rates of increase.This publication has 4 references indexed in Scilit:
- Population Growth Rates and Age Versus Stage‐Distribution Models for Teasel (Dipsacus Sylvestris Huds.)Ecology, 1977
- Colonization Success of a "Biennial" Plant Species: Experimental Field Studies of Species Cohabitation and ReplacementEcology, 1977
- The Study of Population Growth in Organisms Grouped by StagesBiometrics, 1965
- Some Further Notes on the Use of Matrices in Population MathematicsBiometrika, 1948