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First you have to choose which data are relevant (and available: field sampling, government databases, etc.) for your focal species. ENFA is neither sensible to unrelevant data nor to their input order. All useful information will be extracted and summarised into the ecological niche factors. Thus, don’t fear to use too much data. Unrelevant data will increase the computation time and the memory needs, but should not significantly influence the accuracy of the result. Nevertheless, they could decrease the generalisation of your model.

Field sampling

Data mining

On-line sources of spatial data


  • Links to relevant URL.


  • List of bibliographical references.