Small-amplitude cycles emerge from stage-structured interactions in Daphnia–algal systems

Edward McCauley (), William A. Nelson and Roger M. Nisbet
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Edward McCauley: Ecology and Evolution Group, University of Calgary, Calgary, Alberta T2N 1N4, Canada
William A. Nelson: Queen’s University, Kingston, Ontario K7L 3N6, Canada
Roger M. Nisbet: Evolution, and Marine Biology, University of California, Santa Barbara, California 93106, USA

Nature, 2008, vol. 455, issue 7217, 1240-1243

Abstract: Predator versus prey McCauley et al. blend theory and experiment to explore the dynamical mechanisms that give rise to different types of predator–prey cycles. Their theory predicts a new type of small-amplitude cycle that coexists with large-amplitude fluctuations in coupled consumer–resource systems. They then show that small-amplitude cycles with the predicted characteristics occur in populations of the herbivore Daphnia pulex and their algal prey. The findings may explain the prevalence of small amplitude cycles in predator-prey systems, and thus their relative stability.

Date: 2008
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DOI: 10.1038/nature07220

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