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Presenting a method for the analysis of ecological systems using numerical models, this book describes the development of these models by means of relational diagrams and rate equations. The calculation of the dynamic behaviour of the models is studied through small computer programs.

de Wit (1924 - 1993) who initiated Production Ecology as a school of thought at the Wageningen Agricultural Univer sity (see Rabbinge et at. Production Ecology is the study of ecological processes, with special attention to flows of energy and matter as factors that determine the productivity of ecological systems.

This text argues that an explicit alternative theory is needed to specify which decisions are made at which points during interpretive processing and to spell out the principles governing the processor's preferred choice at points of ambiguity or uncertainty.

Under leadership of CT de Wit a large amount of modeling, building prototypes and also application, was carried out in the 1970s and 1980s. The CT de Wit Graduate School of Production Ecology (PE) of the Wageningen University builds further on this platform and finds new subjects for research on and with models, and data.

Under leadership of CT de Wit a large amount of modeling, building prototypes and also application, was carried out in the 1970s and 1980s. The CT de Wit Graduate School of Production Ecology (PE) of the Wageningen University builds further on this platform and finds new subjects for research on and with models, and data.

Proceedings of the 2nd International Potato Modeling Conference, held in Wageningen, 17--19 May, 1994

Proceedings of the 2nd International Potato Modeling Conference, held in Wageningen, 17--19 May, 1994