Decay is simply the process of rotting or decomposition. The terms tree decay and tree decomposition can be used interchangeably to describe a biological process where wood’s cellulose and lignin convert to carbon dioxide and water and the remaining nutrients are simply released into the soil.
Without a mixture of microhabitats, biodiversity is lowered as many species are unable to thrive. Thousands of invertebrates rely on deadwood, which in turn provide food for a whole host of other animals. There are many types of deadwood within the woodland, providing homes for a wide array of wildlife. Piles or stacks, dead hedgerows and stumps can mostly be left to their own devices.
An incredible number of birds, mammals, reptiles and insects depend on dead trees for nesting, food storing, hunting, roosting, resting shelter or food. The insects that move into deadwood don’t harm living wood.