Get the CIFOR publications update

CIFOR publishes over 400 publications every year on forests and climate change, landscape restoration, rights, forest policy, agroforestry and much more in multiple languages.

Age-structured population growth rates in constant and variable environments: a near equilibrium approach

Age-structured population growth rates in constant and variable environments: a near equilibrium approach

General measures summarizing the shapes of mortality and fecundity schedules are proposed. These measures are derived from moments of probability distribution related to mortality and fecundity schedules. Like moments, these measures form infinite sequences, but the first terms of these sequences are of particular value in approximating the long term-faster growth rate of an age structured population that is growing slowly. Higher order terms are needed for approximating faster growing populations. These approximations offer a general nonparametric approach to the study of life-history evolution in both constant and variable environments. These techniques provide simple quantitative representations of the classical findings that, with fixed expected lifetime and net reproductive rate, type I mortality and early peak reproduction increase in the absolute magnitude of the population growth rate, while type III mortality and delayed peak reproduction reduce this absolute magnitude.

Authors: Dewi, S.; Chesson, P.

Topic: life history,age,mortality,reproduction,survival,population growth,projections,measurement

Publication Year: 2004

Source: Theoretical Population Biology 65: 75-88


Export Citation

Related viewing

Top

CIFOR website usability survey

We're conducting research on our website and we'd love to hear from you about your experience on cifor.org. This will help us make improvements and prioritize new features. The survey should only take 5 minutes, and your responses are completely anonymous.

If you have any questions about the survey, please email us: cifor@cgiar.org

We really appreciate your input!

Start survey
I don’t want to participate
Remind me later