Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/23296
Authors: 
Eichner, Thomas
Pethig, Rüdiger
Year of Publication: 
2004
Series/Report no.: 
Volkswirtschaftliche Diskussionsbeiträge / Universität-Gesamthochschule-Siegen, Fachbereich Wirtschaftswissenschaften 117
Abstract: 
Predator-prey models of the Lotka-Volterra type and their refinements describe predator-prey interactions taking populations as basic units of analysis. In contrast to these macro models we derive interdependent population growth functions of a predator and a prey species from a micro ecosystem model whose basic entities are representative prey and predator organisms which behave as if they maximize their net offspring under constraints. In the short-run periods prices (scarcity indicators) coordinate and determine all biomass transactions and net offspring which directly translates into population growth and thus constitutes the dynamics of the predator-prey relations. For a specific parametric version our model offers a theoretical foundation of the ratio-dependent predator-prey model with Michaelis-Menten type functional response.
Subjects: 
predator
prey
ratio-dependence
Document Type: 
Working Paper

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