Acta Biotheoretica 41 (1-2):13-22 (1993)
We study the influence of the individual behaviour of animals on predator-prey models. Populations of preys and predators are divided into sub-populations corresponding to different activity classes. The animals are assumed to do many activities all day long such as searching for food of different types. The preys are more vulnerable when doing some activities during which they are very exposed to predators attacks rather than for others during which they are hidden. We study activity sequences of the animals and also the effect of a change in the average individual behaviour of the animals on Lotka-Volterra prey-predator interactions. Numerical simulations are realized for the whole sets of equations (governing the subpopulations) and are compared to the simulations of the reduced sets of equation (governing the populations). We look for the validity of the method with respect to a scaling factor which measures the differences between the two time scales associated to the fast-varying variables and to the slow-time varying global variables. It is shown that when the two time scales differ of about two orders of magnitude, the approximation is satisfying
|Keywords||No keywords specified (fix it)|
|Categories||categorize this paper)|
References found in this work BETA
No references found.
Citations of this work BETA
No citations found.
Similar books and articles
Effects of Density Dependent Migrations on the Dynamics of a Predator Prey Model.Rachid Mchich, Amal Bergam & Nadia Raïssi - 2005 - Acta Biotheoretica 53 (4):331-340.
Aggregation and Emergence in Hierarchically Organized Systems: Population Dynamics.Pierre Auger & Jean-Christophe Poggiale - 1996 - Acta Biotheoretica 44 (3-4):301-316.
A Learning Strategy for Predator Preying on Edible and Inedible Prey.A. Tsoularis - 2007 - Acta Biotheoretica 55 (3):283-295.
Animals, Predators, the Right to Life, and the Duty to Save Lives.Aaron Simmons - 2009 - Ethics and the Environment 14 (1):pp. 15-27.
Corals and Starfish Devastation of the Great Barrier Reef: Aggregation Methods.Peter Antonelli & Pierre Auger - 1995 - Acta Biotheoretica 43 (4):481-493.
Square-Root Models for the Volterra Equations and the Explicit Solution of These Models.M. Arrigoni & A. Steiner - 1983 - Acta Biotheoretica 32 (2):123-142.
Linear Discrete Population Models with Two Time Scales in Fast Changing Environments II: Non-Autonomous Case.Ángel Blasco, Luis Sanz, Pierre Auger & Rafael Bravo de la Parra - 2002 - Acta Biotheoretica 50 (1):15-38.
Influence of Individual Aggressiveness on the Dynamics of Competitive Populations.Eva Sanchez, Pierre Auger & Rafael Bravo de la Parra - 1997 - Acta Biotheoretica 45 (3-4):321-333.
Complex Ecological Models with Simple Dynamics: From Individuals to Populations.Pierre M. Auger & Robert Roussarie - 1994 - Acta Biotheoretica 42 (2-3):111-136.
Added to index2009-01-28
Total downloads13 ( #357,550 of 2,177,988 )
Recent downloads (6 months)1 ( #317,698 of 2,177,988 )
How can I increase my downloads?