This is a difficult question in terms of how a deer benefits its community. White-tailed deer often live in mixed-forest areas, and feed on a variety of plant material. They do serve as a food source...
the most i kno is that a niche is the purpose of he deer its basically: what it eats where it lives what plants and animals interact with it where on the food web does it fall etc.ADDED 05/2009 -...