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Community Ecology (Predator-Prey interactions pred prey (one predator,…

- - - - organisms eat shared resources
    - - one organism restricts another
  - - - predator's functional response is dependent on amount of prey
    - - line indicating population stability
    - - improving conditions for prey
        
        may lead to overexploit the prey
        
        both species will be lost
  - - - probability of encounter
      - decision by predator to attack once encounter happens
      - probability that an attacked prey will be eaten successfully
    - - examine the interactions bt the factors to understand why herbivores eat plants
    - - produced by optimal foraging theory
      - four different predictions
        
        1) predators should prefer whichever prey yields the most energy per unit of handling time
        
        2) if the high-yield prey become sufficiently scarce, then the predator would be more successful by broadening its diet to include prey that are lower in energy if they are abundant and easy to handle
        
        3) some prey items will always be eaten if they are encountered, others will never be eaten even if easy to obtain
        
        4) the probability that a particular plant will be eaten depends partially on the abundance of other plants that are easy to handle and have higher value
- - - - produce nectar
      - lose pollen that is eaten
- - - - relationship bt area & species richness
        
        Formula: S=cA^z
        
        S = # of species
        
        c and z = constants used to compare the diversity of those communities