Figure 1
From: A comparison of random draw and locally neutral models for the avifauna of an English woodland
The effect of immigration rate and death rate parameters on neutral model estimates of species richness. Response of mean annual (left) and total (right) species richness estimates to variation in immigration rate (m) and death rate (d) in the neutral model. The area of parameter space between contours 31.20 and 32.86 in the left-hand figure corresponds to values of m and d that give estimates encompassing the mean ± 95% probability interval of annual species richness in Eastern Wood. The area in the right-hand figure between contours 44.5 and 45.5 corresponds to values of m and d that give integer total richness values over 29 years of 45 species.