In the field of ecology, an indigenous species is an organism which is native to a region or ecosystem. Basically, the term indigenous (or native) means that an organism (species) originated and evolved in a particular region, and is a natural member of that region's biotic community. The term also implies that humans were not involved in the dispersal or colonization of the species in that particular region. Ernst Haeckel coined the term oekologie in 1866. ... A crab is an example of an organism. ... An ecosystem, a contraction of ecological and system, refers to the collection of biotic and abiotic components and processes that comprise, and govern the behaviour of some defined subset of the biosphere. ...

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