| environ. |
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 (小规模的、简化的、实验性的生态系统，实验室或者基于场地的，这可能是： a.直接从自然界得到(例如池塘水的样本因为输入人造光和气体交换而维持)； 或者b.建立在无异种生物混杂的文化 (只由一类生物体组成的一个生物体的文化， 即没有任何污染生物体)上直到生物体和环境要求的条件被取得为止。又叫微观世界。) |
