Moreover, rye grass has a 6-12 inch deep root system, inhibits the establishment of the deeper rooted natives and also increases the frequency of fires. What has been happening in many areas is a cycle of fire, rye grass, fire, rye grass, fire. Each time the cycle gets shorter. Fire-induced reduction in the porosity of these soils was attributed to this faunal impoverishment. This is consistent with a bacterial site.
Bacteria favor poor soil aeration and induced compaction out-competing the fungi by hypoxia.
This is simply not true. I've seen many burnt sites that have the fired bricked soil with no signs of organic debris. Dry soil is a good insulator, fires can reach 400-670 deg. Wet cold soil with much nutrition favors bacteria. A bacterial based start-up means succession will be difficult at best.