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community ecology (predator- prey interactions # (one predator, one prey…

- - - - feeding rate is faster when there are more prey available
    - - dN/dt = rate of change with time prey population
      - r - intrinsic rate
      - N- # of individuals of prey species
      - a- predators per capita attack rate
      - P - # of predator individuals present
  - - - the probability of encountering said prey
      - probability attacked prey will be eaten
      - decision of predator to attack prey after its been encountered
    - - produces optimal diet model- makes 4 predictions
        
        predators should prefer whichever prey holds the most energy per handling time
        
        predator would be more successful broadening its diet when high energy prey become scarce
        
        some prey items will always be eaten and some will not
        
        probability a particular plant will be eaten depends partially on the abundance of other plants that are easy to handle and have higher values
    - - exploitation competition- resource competition occurs
      - interference competition- one organism restricts another organism's access to resources even though the first may not be using it
  - - - increase of one prey species may cause the decrease in other prey species
- - - - fungitive species- one that survives by colonizing new patches
- - - - primary succession- organisms become established on newly created substrates
- - - - S= cA^z
        
        S= # species. A= area, c and z are various communities
      - alpha diversity- number of species or growth forms that accurs at a local, small site
      - beta diversity- compares difference between small sites and larger regions
      - gamma diversity- # of species within a region