Populations, Ecosystems and Sampling

Unfinished but useful for definitions

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  • Populations, Ecosystems and Sampling
    • Key words and definitions
      • Adaptation
        • A feature that members of a species have that increases their chance of survival and reproduction
      • Biotic
        • The living features of an ecosystem
      • Abiotic
        • The non-living features of an ecosystem
      • Niche
        • Describes  how an organism fits into the environment and its role, no two species occupy the same niche
      • Habitat
        • the place where an organism lives. Within one ecosystem there are many habitats
      • Community
        • All the populations of different organisms living and interacting in a particular place at the same time
      • Population
        • A group of interbreeding organisms of one species in a habitat
      • Ecosystem
        • All the organisms living in a particular area and all the abiotic factors
      • Intraspecific  Competition
        • When organisms of the same species compete with each other for the same resources
      • Interspecific Competition
        • When organisms of different species compete with each other for the same resources
    • Equations
      • Population Growth
        • (births+immigration) - (deaths+emigration)
      • Population Growth Rate
        •  (population change during the period)/(population change at the start of the period)×100
      • Birth Rate
        • (number of births per year)/(total population in the same year)×100
      • Death rate
        • (number of deaths per year)/(total population in the same year)×100
    • Sampling
      • Random
      • Stratified
        • Transect
  • Habitat
    • the place where an organism lives. Within one ecosystem there are many habitats
  • Key words and definitions
    • Adaptation
      • A feature that members of a species have that increases their chance of survival and reproduction
    • Biotic
      • The living features of an ecosystem
    • Abiotic
      • The non-living features of an ecosystem
    • Niche
      • Describes  how an organism fits into the environment and its role, no two species occupy the same niche
    • Community
      • All the populations of different organisms living and interacting in a particular place at the same time
    • Population
      • A group of interbreeding organisms of one species in a habitat
    • Ecosystem
      • All the organisms living in a particular area and all the abiotic factors
    • Intraspecific  Competition
      • When organisms of the same species compete with each other for the same resources
    • Interspecific Competition
      • When organisms of different species compete with each other for the same resources

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