Energy and Ecosystems Flashcards
Topic 5.3
1
Q
Estimate chemical energy in dry biomass
A
Using calorimetry
Energy released = specific heat capacity of water x volume of water (cm cubed) x temperature increase of water
2
Q
Gross Primary Production (GPP)
A
Total chemical energy in plant biomass within a given volume or area
3
Q
Define net primary productivity (NPP)
A
Total chemical energy available for plant growth, plant reproduction and energy transfer to other trophic levels after respiratory losses
4
Q
Equation containing GPP and NPP
A
NPP = GPP - R
where R represents respiratory losses
5
Q
Equation for net production of consumers
A
N = I (F + R)
I: chemical energy from ingested food
F: energy lost as waste
R: respiratory losses
6
Q
A
