**5. Insects and organic matter decomposition**

Apart from bacteria and fungi, invertebrate (insects) herbivores as well as decomposers breaks down and feeds on living, dead or decaying plant or animal matters, making organic nutrients (recycling) available to the ecosystem [47]. As a result to renew forests by reduce the old and vulnerable trees, also provide new habitat and food for wildlife. However, food resource (detritus) that supports trophic food chains in almost every territory of the heterotrophic habitat, among them is countless species of insects [48]. Meanwhile, there are three major processes through which decomposition occurs [49, 50], (a) fragmentation of litter into smaller sizes, (b) leaching of soluble compounds into soil, and (c) catabolism by decomposer organisms. Insects are mostly engaged more in the fragmentation of litter into smaller sizes. Several decomposers have special relationship with plant species and are specialized to breakdown the litter of these materials [51]. Given that the decomposer food web consisting of fauna and microbial communities also varies in the underneath of different forest floors and

affects the rates various litter fractions are mineralized in an ecosystem [52]. Most of these orders (larvae and adult) are engaged, for example Diplopoda, Isopoda, Collembola, Diptera, Coleoptera, Acari among few others.
