Please enable JavaScript.

Coggle requires JavaScript to display documents.

Populations and Ecosystems ( a group of organisms of the same species who…

- - - - Climate
      - Soil factors
        
        A horizon is uppermost and consist of litter and debris.
        
        B horizon is the area where materials from the A horizon accumulate.
        
        C horizon is made of rock and rock fragments.
      - Latitude and Altitude
      - Disturbance
  - - - Commensal Relationships , in which one species benefits and other is unaffected for example cocklebur.
      - Predation, in which one species benefits and the other is unharmed. for example Insects laying eggs on Plants
      - Pathogenic, bacteria and fungi are pathogenic causing disease.
- - - - Limiting factor
    - - Random Distribution is when there is no obvious, identifiable pattern to the positions of individuals.
      - Clumped Distribution is in which spacing between plants is either small or large, but rarely average.
      - Uniform Distribution occurs in orchards and tree plantations, all individuals are evenly spaced from their neighbors.
  - - - The number of individuals in each populations that can live in a particular ecosystem is limited, that number is the carrying capacity.
  - - - r-selected species are those that emphasize high growth rates, typically exploit less-crowded ecological niches, and produce many offspring, each of which has a relatively low probability of surviving to adulthood (i.e., high r, low K).