Eco Tools is a set of numerical tools for ecological analysis that are available, free, to anyone with web access. They are programmed in Mathematica (Wolfram Research), which is a high-level coding language, and the code is available for anyone to inspect. Registration is required to have access to the tool.
www.eco-tools.net is a web-accessible means of performing commonly-needed and useful calculations in ecology and conservation biology. No special software is required, and all algorithms are transparent and based on standard references.
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Russell, G. (2003), Eco-tools.net, online calculations for ecology and conservation biology. Accessible online at http://www.eco-tools.net/