... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > animal community > animal species > saprophage > geophage

... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > living organism > animal species > saprophage > geophage

... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > functional group > consumers > saprophage > geophage

... > ecological parameter > trophic structure > trophic chain > trophic level > consumers > saprophage > geophage

... > ecological system > ecosphere > biosphere > ecosystem > biocenosis > functional group > trophic group > saprophage > geophage