It's not often life has morphed the planet to have radically different attributes but this anthropocene is to be one such period. The status quo between the bacterial and fungal decomposers, nutrient producing plants and animals has been altered by a species that can utilize the sort of organic stuff even decomposers have deemed to be waste or even toxic. We might add to the traditional carbon cycle the effect this species has, just like there's room in ecological models for the photosynthetic bacteria and unicellular algae, and the early land plants, which created the snowball earth periods. The unclear reasons for the Permian exctinction event may include also organisms, which would these be is unclear. This time around, the chemistry of earth is changing to hotter temperatures, which could be regarded 'natural' for the species responsible for the warming is of tropical origin. Thus it likes hotter temperatures than earth currently on average has. In doing this the species forces other species to adapt, but it maybe there are species that indeed are already better adapted to hotter and more humid conditions. Thus unexpected changes by other species such as the methanogenic bacteria may be in waiting. This though doesn't change the instigator of these changes.