Functional Diversity Flashcards
Principle of Allocation
Each individual has a finite amount of resources to spend on necessary life processes
Zero sum game
Increase in investment to one process must be balanced by reduction an another
What are the life processes organisms need
Obtaining food, escaping predators, reproduction, growth
Trade offs
Investment in one resource, lost of investment in another resource
What do plants gain from root mutualism
Increased ability to absorb nutrients from soil
What do mychorrihzal and rhizobia gain from plants
Glucose exchange
Mychorrhizal
Fungi that interacts with the roots of plants
Rhizobia
Bacteria that interacts with roots of plants
C3 Pathway
- used by 85% of all plants
- beneficial in wet environments/high CO2 concentrations
- lose a lot of water
- most energy efficient
- CO2 uptake and glucose production occurs in mesophyll cells
- trees
C4 Pathway
- CO2 uptake/glucose production separated in leaf space
- more water efficient
- less energy efficient
- beneficial in hot environments/low CO2 concentration
- grass
CAM Pathway
- processes separated by night/day
- the most water efficient
- more energy required
- dry environments
- grow slower because of night days cycle
- cacti
Liebig’a Law of Minimum
The resource with minimum availability will determine the plants growth
What happens when you increase a plants limiting resource
There will be higher plant growth
Root : Shoot ratio
- increase in below ground growth increases ratio
- increase in above ground growth decreases ratio
Why would a plant invest more energy in above or below ground
The plant invest where resources are more needed, limited
