Appendix 3—figure 1. In general home ranges $H_i$ for different animal groups of the same species can overlap (e.g.

see the red overlapping area $\Omega$ on the left). Hence, not all the energy available in the home range can sustain the biomass of the animal groups as some resources must be shared and competition can occur. We therefore approximate the total energy effectively available from the overlapping home ranges with the energy coming from non-overlapping effective home ranges $H_i^{\ast }$, which allow to approximate the total biomass for species $i$. Effective home ranges $H_i^{\ast }$ have radius $r^{\ast }$ equal to half the distance between animal groups. .