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. 2013 Sep 18;8(9):e73371. doi: 10.1371/journal.pone.0073371

Figure 3. Groups of NES according to environmental variables.

Figure 3

(pptann : total rainfall per year, tmean: mean temperatures, alt: altitude). Each point is a unique NES. Symbols represent the geological substrate of the NES (o: volcano-sedimentary, Δ: ultramafic, +: anthropic formations and riverbanks, x: limestone). Points are coloured according to taxonomic families.