The 'niche model' is based on the premise:
1
That each trophic species fits a hierarchal sequence with overlapping entities where they eat each other
2
That each trophic species is restricted to a specific level in the trophic structure but draws resources from all levels
3
That each trophic species fits a specific niche based on what it eats and, inturn what eats it
4
That each trophic species is widely distributed across the trophic structure and thus eats all other species