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microecosystem A small-scale, simplified, experimental ecosystem, laboratory- or field- based, which may be: 1. derived directly from nature (e.g. when samples of pond water are maintained subsequently by the input of artificial light and gas-exchange); or 2. built up from axenic cultures (a culture of an organism that consists of one type of organism only, i.e. that is free from any contaminating organism) until the required conditions of organisms and environment are achieved. Also known as microcosm [ˌmaikrəu'ekəuˌsistəm] n | |
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