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. 2015 Nov 10;10(11):e0142621. doi: 10.1371/journal.pone.0142621

Fig 6. Variations in orchid species richness (SR, panel A-B) and species density (SD, panel C-D) as function of mean annual temperature (MAT).

Fig 6

(A) Specimen: SR = 25.376 + 1.408*MAT − 4.304*MAT2 − 0.194*MAT3; Genus: SR = 16.733 − 1.682*MAT + 1.247*MAT2 − 0.051*MAT3; Species: SR = 28.621 − 8.129*MAT + 3.611*MAT2 − 0.144*MAT3. (B) Epiphytic: SR = 24.283 − 22.077*MAT + 3.673*MAT2 − 0.120*MAT3; Terrestrial: SR = 6.125 + 10.632*MAT– 0.358*MAT2–0.005*MAT3; Saprophytic: SR = -0.248 + 0.798*MAT– 0.042*MAT2 + 3.002*10−4*MAT3. (C) Specimen: SD = 2.468 + 1.220*MAT + 0.280*MAT2 − 0.015*MAT3; Genus: SD = 1.776 + 0.143*MAT + 0.078*MAT2 − 0.004*MAT3; Species: SD = 3.044 − 0.561*MAT + 0.254*MAT2 − 0.010*MAT3. (D) Epiphytic: SD = 2.211 − 1.990*MAT + 0.336*MAT2 − 0.011*MAT3; Terrestrial: SD = 0.853 + 1.333*MAT– 0.075*MAT2 + 0.001*MAT3; Saprophytic: SD = -0.021 + 0.096*MAT − 0.006*MAT2 + 9.571*10−5*MAT3.