Cohen A E, Gonzalez A, Lawton J H, Petchey O L, Wildman D, Cohen J E
NERC Centre for Population Biology, Imperial College at Silwood Park, Ascot, Berkshire, UK.
Proc Biol Sci. 1998 Jan 7;265(1390):11-5. doi: 10.1098/rspb.1998.0257.
This paper reports on the design and construction of a novel apparatus that allows a set of aquatic microcosms to experience complex temporal environmental fluctuations. Replicate microcosms were maintained in 18 water baths with independent environmental controls. We give results from a preliminary experiment designed to look at the effects of varying temperatures with different variance spectra (i.e. white noise or 1/f noise) on single species population dynamics. Matching time series (with identical elements, differently ordered) of environmental temperatures with different Fourier spectra were created for use as input to the apparatus using a novel spectral mimicry method. The apparatus functioned well during the course of the experiment making this an extremely useful research tool. This apparatus now provides ecologists with a means of studying how environmental variability and directional trends in this variability, are filtered and translated by real populations and micro-ecosystems.
本文报道了一种新型装置的设计与构建，该装置能使一组水生微观世界经历复杂的时间性环境波动。复制的微观世界保存在18个具有独立环境控制的水浴中。我们给出了一个初步实验的结果，该实验旨在研究具有不同方差谱（即白噪声或1/f噪声）的不同温度对单一物种种群动态的影响。使用一种新颖的谱模拟方法创建了具有不同傅里叶谱的环境温度匹配时间序列（元素相同，顺序不同），用作该装置的输入。该装置在实验过程中运行良好，使其成为一种极其有用的研究工具。这种装置现在为生态学家提供了一种手段，来研究环境变异性以及这种变异性中的方向性趋势是如何被真实种群和微观生态系统过滤和转化的。
