Energy and ecosystems Flashcards
1
Q
What are the producers
A
Plants
2
Q
Why are plants producers
A
They can make their own carbs from CO2
3
Q
What happens between trophic levels
A
Energy is lost
4
Q
Biomass defintion
A
Dry mass of tissue per given area
5
Q
Net production of producers
A
NPP = GPP - R GPP= chemical energy store in biomass from photosynthesis R= respiration
6
Q
Net production of consumers
A
N=I - (F + R)
I = chemical energy store in ingested food
F = chemical energy lost in faeces and urine
R = respiratory losses
7
Q
Rates of productivity
A
Kj/ha-1/year-1
Kj = energy unit
Ha-1 = per unit area to standardize results, environments will vary in size
Year-1 = per year because of seasonal impacts, create a yearly average
