In death, as in life, different tree species support different insects and fungi, so a greater diversity of logs means more diversity of those that use them. The only fungi I identify is jelly ear (Auricularia auricula-judae), but there are brackets and strands of other things, a pink slime mould. The way the wood is arranged also brings different species: buried wood attracts stag beetles, wood at height attracts wasp beetles, and then there are the specialists of bark and softwood, the solitary bees that lay eggs in abandoned holes, the wasps that carve their own. In the soil, detritivores help it decay, fungi and bacteria eat it back into earth.