Fig. 3
From: Estimating species pools for a single ecological assemblage
Relationships between area size of the associated species pool and population rarity threshold for the BCI local forest plot. The shadowed area is the 95% confidence band of A when the corresponding threshold t varies. Four sampling fractions of the entire BCI plot (0.25: 12.5, 0.5: 25, 0.75: 37.5 and 1.0: 50 ha) were analyzed and compared for their consistency in estimating the species pool. The vertical dashed line indicates the optimal threshold identified from Fig. 2 for each sampling scale. The horizontal dashed line indicates the area size of the entire BCI island