What animals benefit from the ecosystem created from composting?

All animals! they can Improve Your Soil! Compost returns valuable nutrients to the soil to help maintain soil quality and fertility. Compost is a mild, slow release, natural fertilizer that won't burn plants like chemical fertilizers. ... Provides organic matter and nutrients which will improve plant growth and lead to better yields.

All animals can benefit. Form deer to fish, they all can. Fish compost (yuck) produces the sand that is on the beach and in the ocean, creating a soft, light, sandy environment for fish, crabs, snails, etc. And deer compost, creates good soil for plants to grow in, and so animals have plants to consume, which means the carnivores have plenty to eat. SO, all animals benefit from the ecosystems created from composting.