How Biomass Is Calculated

Biomass is really an expression of net change – because there can be significant changes to the biomass within the designated time period. The calculation is defined as: biomass(net) = increase biomass(gross) — decrease biomass(gross).

How is biomass percentage calculated?

To complete this calculation, we divide the amount from the higher trophic level by the amount from the lower trophic level and multiply by one hundred. That is, we divide the smaller number by the bigger one (and multiply by one hundred).

How do you calculate biomass of a plant?

There are many methods of determining plant biomass, but perhaps the most common method used for rangeland and pasturelands is clipping and weighing. Clipping techniques involve the removal of all above- ground herbaceous vegetation within a sample plot and measuring its dry mass (air or oven-dried vegetation).