Pollination model unexpected results for crop yield

Dear community,

As discussed here I am running the pollination model using a different farms map. My “farms” are apple fields. So half_sat, p_managed, fr_spring…, n_cavity, n_ground, p_dep and season are all the same for all apple fields. However Pabund (average pollinator abundance on the farm) divers: 0.028 to 0.212.

Based on the model mathematical framework it is unexpected to me, why y_tot (total yield index = 1), pdep_y_w (index of potential pollinationd ependent yield = 1) and y_wild (index of the total yield attributalbe to wild pollinators = 0.9) are all the same.