As we get more control of the resources on this planet, the proportions of species measured in earths biomass will certainly change. For example, there are no m

As we get more control of the resources on this planet, the proportions of species measured in earths biomass will certainly change. For example, there are no more wild cattle in europe. There are actually more domestic cattle in europe than there were ever wild cattle, however. The calories to support that surplus of bovine has to come from somewhere in the environment, there is no free energy. More nutrients that would have otherwise gone towards other plants perhaps are used to grow foods for the cattle, and n-th order effects to the rest of the environment happen from there. You can't have 8 billion people generating a surplus of food without changes to the rest of the network of life's interactions.