The site contains models selected to be useful for decision support on use of living natural resources and other environmental issues of interest to communities and managers of land, water and species. The few models suitable for non-scientists are on Opportunities pages for relevant Topics. Please add important models we have missed and contact us about them.

This is an educational tool for modelling complex systems in many fields; for schools at $199, universities at $649 and professionals at $1899.

Predictive mapping for insects and fungi in America and China. The Bio-Environmental Appraisal and Mapping Model uses weather and geophysics to characterize areas where a species thrives and then finds other parts of the world with these characteristics are found.

This is a generic tool for researchers, built for agriculture but with wider scope, based on similarity matrices; it is mostly in Hungarian, with some English and German.

This is a Swedish coupled heat- and mass-transfer model based on the previous WinSoil and SOILN to simulate soil water and heat processes using flow dynamics and mass/energy conservation principles.

This site run by the US Environmental Protection Agency provides modelling systems, support and training. Products such as BASINS (for watersheds) and QUAL2K (for stream water quality) have developed since the 1980s, typically integrate a number of previous models and in some cases use open-source GIS with acceptance of plug-ins.

An educational model to examine the effect of soil type, ground cover type, and rainfall amount on the quantity of water runoff.

A model to estimate probability of area occupied, and of species presence overall, from repeated sampling.