Figure 2.

Minimum multiplier M as a function of exponential time discount rate r and offsetting delay t₁. The figure has been computed assuming a relative decrease of 1 in condition of site A₀ at t = 0 and a relative improvement of 1 in condition at site A₁ at time t₁. Biodiversity value is proportional to the area, as in Fig.1 and Table4. In the white area, the multipliers quickly increase with r and t₁, having a value of 117 in the upper right-hand corner. The minimum multiplier in the lower left-hand corner is 1.