6.5.2 Biomass Flashcards
1
Q
Meaning of biomass
A
The total quantity or weight of organisms in a given area
2
Q
Calculating biomass?
A
Biomass in organisms x total number of organisms present
3
Q
Why do we have to calculate dry mass?
What is the percentage of water in organisms?
A
Kill the animal, dehydrate
, organisms 60% water
4
Q
What are the units if biomass
Land
Water
A
Land: gm-2
Water: gm-3
5
Q
What are the units of tropic levels yearly?
A
Kjm-2yr-1
6
Q
How can energy transfer
2 1/2
A
•Organisms consumed
•Organisms produce waste material- death, parts of body that can’t be digressed (hair,bones)
