assimilation efficiency

Assimilation efficiency in biology refers to how effectively animals convert the food they consume into energy for growth and reproduction. This process is crucial for understanding energy transfer within ecosystems.1

Herbivores typically assimilate between 15% and 80% of the plant material they eat, with efficiency varying based on their physiology and the plant parts consumed. For instance, eating seeds or young vegetation yields higher assimilation efficiencies than consuming older leaves or wood.1

Carnivores generally exhibit higher assimilation efficiencies, ranging from 60% to 90%, due to the easier digestibility of their prey. The overall productivity of the biosphere is influenced by the initial conversion of solar energy by plants (about 1%) and the subsequent assimilation efficiencies at higher trophic levels.1