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Estimating Litter Decomposition Rate in Single-Pool Models Using Nonlinear Beta Regression

Figure 8

Average k estimates for simulations with variable normal errors (option 1).

(A) SV and (B) REP transformations. Early, mid, late and end are early, mid, late and end stage decomposition simulations. The numbers 2, 5, 7 and 10 are the numbers of measurements used in each simulation. Blue circles = NLS, Red circles = Normal ML, gray/black circles = Beta ML. In most cases, nls = Normal ML so that the red circles cover the blue circles. Gray lines in panels (A) and (B) show the true k value of 0.002 d−1.

Figure 8