Why not just measure total mammal biomass? Humans are part of ecosystem, just like any other species and we have allowed many animals to flourish on unprecedented scale. Just look at all the new feline and canine diversity, or novel genomes like glofish.
Obviously, we want to preserve pre-existing biodiversity as much as we can, at the very for our own sake and for future generations to have all the tangible and intangible benefits of these species. But I wouldn't say that human-symbiotic species are inferior or that relative biomass has to have a particular ratio.
Obviously, we want to preserve pre-existing biodiversity as much as we can, at the very for our own sake and for future generations to have all the tangible and intangible benefits of these species. But I wouldn't say that human-symbiotic species are inferior or that relative biomass has to have a particular ratio.