HIERARCHY IN ECOLOGY
HIERARCHY IN ECOLOGY
The levels of organization are described below from
the smallest to the largest :
- A species is a group of individuals that are genetically related and can breed to produce fertile young. Individuals are not members of the same species if their members cannot produce offspring that can also have children. The second word in the two word name given to every organism is the species name. For example, in Homo sapiens, sapiens is the species name.
- A population is a group of organisms belonging to the same species that live in the same area and interact with one another.
- A community is all of the populations of different species that live in the same area and interact with one another. A community is composed of all of the biotic factors of an area.
- An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment. An ecosystem is made of the biotic and abiotic factors in an area.
- The biosphere is the part of the planet with living organisms. The biosphere includes most of Earth, including part of the oceans and the atmosphere.
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