all the organisms of all the different species living in the same habitat/ecosystem at the same time
1 of 9
Producer
- photosynthetic organisms autotrophs
-transfer light energy into chemical energy
-make organic molecules from inorganic molecules
2 of 9
Consumer
-heterotrophs
-get their energy from feeding on "ready made" organic molecules
3 of 9
Decomposer
-saprobiotic bacteria and fungi
-are consumers, use organic molecules in faeces/urine/dead organisms
4 of 9
Biomass
-what is left after respiration has used some organic molecules
- mass of carbon per unit area per unit time
-dry mass of tissue per unit time
5 of 9
Calorimetry
-technique to measure energy content of biomass
-burn only biomass in excess of oxygen
-heat known volume of water
- to get dry biomass heat (80*c) biomass to constant mass
-use 80*c so organic molecules don't combust
6 of 9
Gross Primary Productivity
(GPP)
-energy store in plant biomass (kJ m^-2 y^-1)
GPP = NPP + R
7 of 9
Net Primary Productivity
(NPP)
-energy store in plant biomass (kJ m^-2 y^-1) minus respiratory loss
-organic molecules for more cells/growth/reproduction to be eaten
NPP = GPP -R
8 of 9
N = I - (F +R)
(N)
-energy store in a consumer
- (what goes in - what comes out)
9 of 9
Other cards in this set
Card 2
Front
- photosynthetic organisms autotrophs
-transfer light energy into chemical energy
-make organic molecules from inorganic molecules
Back
Producer
Card 3
Front
-heterotrophs
-get their energy from feeding on "ready made" organic molecules
Back
Card 4
Front
-saprobiotic bacteria and fungi
-are consumers, use organic molecules in faeces/urine/dead organisms
Back
Card 5
Front
-what is left after respiration has used some organic molecules
- mass of carbon per unit area per unit time
-dry mass of tissue per unit time
Comments
No comments have yet been made