Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Simple representations of biomass dynamics in structured populations

Nisbet, R.M. and McCauley, E. and Gurney, William and Murdoch, W.W. and de Roos, A.M. (1996) Simple representations of biomass dynamics in structured populations. In: Case studies in mathematical modeling. Prentice Hall, New Jersey, pp. 61-79. ISBN 9780135740392

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

The research described in this chapter represents part of a larger program whose aim is to provide the knowledge and tools to better understand the dynamics of natural and managed ecosystems. More specifically, we aim to produce mathematical models that can translate the effects of environmental stress on individual aquatic organisms to the dynamics of populations. One very practical concern motivates this work: while environmental management demands understanding of long-term effects of stress on populations of plants and animals, much experimental information relates only to short-term effects on individuals. We are addressing this concern by establishing how to develop testable, individual-based models (DeAngelis and Gross 1992) capable of predicting population responses to environmental change. For example, the physiological response of many animals to certain forms of environmental stress (e.g., eutrophication, toxicants, lake acidification) involves changes in the rates of assimilation and utilization of food. Our overall aim is to predict the consequences for the dynamics of natural populations of these changes in individual energy acquisition and use.