nectria cinnabarina, red saprophytic fungus on the bark of an old tree, destroying dead wood

nectria cinnabarina red fungus saprophytic bark old tree dead wood decay rot mycology plant pathology nature fungal infection decomposition biodiversity forest ecology fungi spores mycelium growth macrofungi pathogenic ecological damage toxic biological degradation organism ecosystem organic matter balance woodland health floor decomposer habitat oldgrowth soil disease pathogen biology species wildlife disruption