b4.1.5 efficency of biomass transfer Flashcards
1
Q
efficiency of biomass transfer
A
biomass available after the transfer
————————————————. x 100
biomass available before the transfer
2
Q
ways biomass can be lost
A
- not all of an organism is eaten
- respiration (movement)
- egestion of parts that cannot be digested (hair or teeth) as faeces
- excretion (urea lost in urine)
3
Q
how is biomass calculated
A
dry mass of organism
- because water content varies
- organisms are killed and dried in a kiln
4
Q
how is biomass calculated
A
dry mass of organism
- because water content varies
- organisms are killed and dried in a kiln
