Biomass

Definition

The mass of a living organism of a defined type and from a defined area. Biomass, often expressed as dry weight, is used to estimate abundance and to ameliorate the differences between a few large individuals and many small ones.

Etymology

From Greek 'bios', meaning 'life', and Latin 'massa', meaning 'mass'.

Example

The biomass of a forest can be measured by the total weight of all living plants and animals within its boundaries.

Related Terms

• Dry weight
• Abundance
• Ecosystem