hyphae of a saprotrophic fungus on a rotting leaf in autumn

hyphae saprotrophic fungus fungi autumn rotting leaves decomposition decay mycelium spores microscopic nature macro forest biodegradation ecology basidiomycota ascomycota mycology saprobe detritivore organic nutrient cycle wet damp autumnal seasonal fungal microorganism ecosystem saprotroph process leaf floor detritus matter biodegrading hyphal structure microbiology hairy