Several species of oak trees are native to North America including live oak, pin oak, blackjack oak, swamp white oak, and many others. Some species can even live up to 1000 years old. Oak trees are a keystone species and are vital to the survival of their ecosystem. Oak trees are associated with high levels of biodiversity as they support over 2300 species consisting of 38 bird species, 229 bryophytes, 108 fungi, 1178 invertebrates, 716 lichens, and 31 mammals. Of these species, 320 are found only on oak trees, and 229 species are typically only seen on oak trees. This doesn't include the vast majority of their relations with bacteria and other positive fungi. They have a unique mutual relationship with mycorrhizal, which helps them capture nitrogen and release it into the soil which is extremely beneficial for all other plants and decomposers nearby.
https://www.oneearth.org/oak-trees-kings-of-biodiversity/
Inonotus dryadeus is among the most common fungi found on oak trees, so much so its nickname is the "Oak Bracket Fungus". Its silent but deadly nature makes it fearsome; it causes internal decay and eats away at the tree from the inside. More often than not the tree shows no external damage/illness and is susceptible to falling at any given time.
There is currently no reliable fungicide or cure for this particular fungus, only removal management practices. Healthy oak trees are more resistant to this fungus, making it essential to maintain their overall well-being to ensure protection. Mulching, fertilizing, and pruning are all ways to prevent fungus from attacking the trees.
https://purduelandscapereport.org/article/inonotus-dryadeus-butt-and-root-rot-of-oaks/
Bracket Fungus breaching the surface from inside a recently removed oak tree located near Patterson Hall