Geochemistry and microbiology of tropical serpentine soils in the Santa Elena Ophiolite, a landscape-biogeographical approach

Table 3 Altitude correlated concentration of elements in the serpentine soils following their Geochemical-Landscape classification (Fig. 4)

Landscape	Element	Alt. Corr	Linear model ^a	R²	F ratio	Prob. > F
Mountain	Fe₂O₃	0.6675	Fe₂O₃ (%) = 22.25 + 0.032*Alt	0.4456	8.04	0.0177
	MnO	0.6118	MnO (%) = 0.294 + 0.0003*Alt	0.3743	5.98	0.0345
	Ni	0.8606	Ni (%) = 0.65 + 0.0013*Alt	0.7407	28.56	0.0003
	Co	0.8058	Co (ppm) = 204 + 0.30*Alt	0.6493	18.51	0.0016
Inner ophiolite lowland	MnO	− 0.7106	MnO (%) = 0.409–0.0008*Alt	0.5050	6.12	0.0482
	Cr	− 0.8595	Cr (%) = 0.704–0.0012*Alt	0.7387	16.96	0.0062
	Co	− 0.7141	Co (ppm) = 221–0.31*Alt	0.5100	6.24	0.0466

^a Graphical model plotted in Additional file 1: Fig. S9./Corr.: correlation, Alt: altitude measured in meters above sea level (masl)

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