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Community Ecology fp (Predator prey-Interactions :red_flag: (Volterra…

- - - - fisherman/hunters allowed harvest particular amount
      - no matter how long it takes
      - could cause great harm
- - - - impossible/unnecessary to catalog every microbe
      - larger areas more diverse than smaller
  - - - larger areas more diverse than smaller
        
        alpha diversity-local small site
        
        beta diversity- differences
        
        b/t several small sites in a larger region
        
        gamma diversity-number of species in region
    - - between area and species
      - S=cAᶻ
      - A= area
      - S= no. of species.
      - c and z are constant
    - - obtained by plotting the no of species
  - - - tropical regions have benign environments
        
        warm
        
        milllion years to adapt
        
        abuduant rainfall
      - high altitude severe conditions
        
        freezing
        
        water stress
        
        millions years to adapt
- - - - herbivorous
        
        can/will eat variety of plants
      - onmivorous
        
        eat both plants and animals
    - - probability that particular prey is encountered
      - decision to attack individual
      - probability that attacked prey successfully eaten
    - - predators prefer prey that yields most energy per handling time
      - if high-yield prey is scarce then, predator more successful by broadening its diet
      - less profitable prey ignored if more profitable prey is available
      - some prey always eaten/ others never eaten even if encountered
  - - - exploitation competition
        
        organisms consume shared resource
        
        less available for other organisms
      - interference competition
        
        one organism restricts access to resource from another
        
        example: leaves blocking light to another organism
      - invasive species
        
        species increases from low to high population density
        
        even with resource competitors present
        
        resource=substance/factors that increase growth rates
- - - - organisms establishing on new substrates
- - - - migration
      - gene flow b/t patches
    - - preserving endangered species
      - metapopulation crucial
  - - - before it dies out in older patches