Energy and Ecosystems Flashcards
1
Q
What is another word for decomposers?
A
Saprobionts
2
Q
What is meant by ‘biomass’
A
Means by which energy is passed on to other organisms
It is measured by calorimetry
3
Q
How to calculate NPP
A
NPP = GPP - respiration
4
Q
What is Gross Primary Productivity
A
Chemical energy stored in plant biomass as a result of photosynthesis
5
Q
How to calculate NPP efficiency
A
energy after transfer / energy before transfer x100
6
Q
How to increase livestock productivity
A
Restricted movement
Controlled feeding
Warm environment
No predators
This means less energy wasted and more converted into meat/eggs
7
Q
Consumer NPP equation
A
N = I - (F + R)
8
Q
How do farms increase NPP
A
Fertilisers - provides essential minerals
Exclude weeds - reduces competition
9
Q
What impacts NPP
A
- Area of ground covered by the crop
- Efficiency of crop at carrying out photosynthesis
