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Simple linear regression of relative growth rate of biomass (RGRBIO) as predicted by relative growth rate derived from image-based surface projected area (RGRSPA) of Yecora-Rojo (left) and Seri-82 (right). The regression equations, significance levels (*** for 0.001 and ** for 0.01), and coefficient of determinations (R2) are shown on each figure. Because our experiment included eight time points, we could calculate RGR measurements for seven intervals.
