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ENFA

Pay attention – the model is based on the records selected using the “Selection tool”

ENFA (Ecological Niche Factor Analysis) model uses a modified principal component analysis for presence only data of a species (Hirzel et al., 2002). It calculates a measure of habitat suitability based on the analysis of marginality (how the species mean differs from the global mean) and environmental tolerance (how the species variance compares to the global variance).

Hirzel, A.H., Hausser, J., Chessel, D. & Perrin, N. (2002) Ecological-niche factor analysis: How to compute habitat-suitability maps without absence data? Ecology, 83, 2027–2036.

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