The total mass of living things present at each trophic level in an ecosystem is referred to as biomass in a food chain. The total mass of all the flora, fauna, fungus, and microbes found in a specific region or habitat is included.Understanding energy flow and nutrient cycling across ecosystems requires an understanding of biomass. It is a measure of the amount of organic matter that organisms at higher trophic levels can eat. Because energy is lost during metabolic processes, heat production, and waste creation at every trophic level, biomass typically declines as one moves up the food chain.
In a basic terrestrial food chain, for instance, the biomass originates with producers (plants), which are then eaten by herbivores (like rabbits).
