"A good metaphor for this is that standing stock biomass is like the balance in a checking account; the
balance can remain steady at $100 even though thou-sands of dollars may have been deposited (production
energy) and spent during the year. The total amount deposited (production energy) is the balance in the account (standing stock) multiplied by the number of times the standing stock has been spent and replenished,
i.e. the turnover rate."