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A novel experimental apparatus to study the impact of white noise and 1/f noise on animal populations


Cohen, Adam E; Gonzalez, Andrew; Lawton, John H; Petchey, Owen L; Wildman, Dennis; Cohen, Joel E (1998). A novel experimental apparatus to study the impact of white noise and 1/f noise on animal populations. Proceedings of the Royal Society B: Biological Sciences, 265(1390):11-15.

Abstract

This paper reports on the design and construction of a novel apparatus that allows a set of aquatic micro-
cosms to experience complex temporal environmental £uctuations. Replicate microcosms were maintained
in 18 water baths with independent environmental controls.We give results from a preliminary experiment
designed to look at the e¡ects of varying temperatures with di¡erent variance spectra (i.e. white noise or 1/f
noise) on single species population dynamics. Matching time series (with identical elements, di¡erently
ordered) of environmental temperatures with di¡erent 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 ¢ltered and
translated by real populations andmicro-ecosystems.

Abstract

This paper reports on the design and construction of a novel apparatus that allows a set of aquatic micro-
cosms to experience complex temporal environmental £uctuations. Replicate microcosms were maintained
in 18 water baths with independent environmental controls.We give results from a preliminary experiment
designed to look at the e¡ects of varying temperatures with di¡erent variance spectra (i.e. white noise or 1/f
noise) on single species population dynamics. Matching time series (with identical elements, di¡erently
ordered) of environmental temperatures with di¡erent 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 ¢ltered and
translated by real populations andmicro-ecosystems.

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30 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:1998
Deposited On:04 Jul 2012 16:13
Last Modified:05 Apr 2016 15:53
Publisher:Royal Society of London
ISSN:0962-8452
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1098/rspb.1998.0257
PubMed ID:9470214

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